diff --git a/src/common/PKeyboardHandler.cxx b/src/common/PKeyboardHandler.cxx
index 76d48dd1a..0389928aa 100644
--- a/src/common/PKeyboardHandler.cxx
+++ b/src/common/PKeyboardHandler.cxx
@@ -505,6 +505,8 @@ PhysicalKeyboardHandler::EventMappingArray PhysicalKeyboardHandler::DefaultCommo
   {Event::Unwind1Menu,              KBDK_RIGHT, MOD3},
   {Event::Unwind10Menu,             KBDK_RIGHT, KBDM_SHIFT | MOD3},
   {Event::UnwindAllMenu,            KBDK_UP, MOD3},
+  {Event::ShowScore,                KBDK_S, KBDM_SHIFT | KBDM_CTRL},
+  {Event::ShowVariation,            KBDK_V, KBDM_SHIFT | KBDM_CTRL},
 
 #if defined(RETRON77)
   {Event::ConsoleColorToggle,       KBDK_F4},         // back ("COLOR","B/W")
diff --git a/src/emucore/Console.cxx b/src/emucore/Console.cxx
index 5cef206b0..260478441 100644
--- a/src/emucore/Console.cxx
+++ b/src/emucore/Console.cxx
@@ -1145,6 +1145,144 @@ void Console::stateChanged(EventHandlerState state)
   // only the CompuMate used to care about state changes
 }
 
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Int32 Console::numVariations()
+{
+  string numVariations = myProperties.get(PropType::Cart_Variations);
+
+  return (numVariations == EmptyString) ? 1 : std::min(stoi(numVariations), 256);
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Int32 Console::numPlayers()
+{
+  string numPlayers = myProperties.get(PropType::Cart_Players);
+
+  return (numPlayers == EmptyString) ? 1 : std::min(stoi(numPlayers), 4);
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+bool Console::parseAdresses(Int32& variation, Int32& player, Int32 scores[])
+{
+  // format:
+  //   b,             ; variation format (BCD, HEX)
+  //   0,             ; add to variation
+  //   80,            ; variation address in hex
+  //   81,            ; player address in hex
+  //   b,             ; score format (BCD, HEX)
+  //   10,            ; score multiplier
+  //   2,             ; score addresses per player
+  //   n-times 82,    ; score addresses player 1 in hex, high to low
+  //   n-times 83,    ; score addresses player 2 in hex, high to low
+  //   ...
+  /*
+    Frogger
+    "Cart.Players" "2"
+    "Cart.Variations" "6"
+    "Cart.Addresses" "b,0,dd,e6,b,1,2,cc,ce,cd,cf"
+
+    Chopper Command:
+    "Cart.Variations" "4"
+    "Cart.Players" "2"
+    "Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
+
+    Asteroids
+    "Cart.Players" "2"
+    "Cart.Variations" "66"
+    "Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
+
+  */
+  string addresses = myProperties.get(PropType::Cart_Addresses);
+  char format;
+  Int16 addr;
+  Int32 varAdd, numScoreAddr, scoreMult;
+
+  // Since istringstream swallows whitespace, we have to make the
+  // delimiters be spaces
+  std::replace(addresses.begin(), addresses.end(), ',', ' ');
+  std::replace(addresses.begin(), addresses.end(), '|', ' ');
+  istringstream buf(addresses);
+
+  // 1. retrieve current variation (0..255)
+  if (!(buf >> format && buf >> varAdd && buf >> std::hex >> addr))
+    return false;
+
+  variation = mySystem->peek(addr);
+  if (format == 'b')
+    variation = (variation >> 4) * 10 + variation % 16;
+  variation += varAdd;
+  variation = std::min(variation, numVariations());
+
+  // 2. retrieve current player (0..3)
+  string playerFormat;
+
+  if (!(buf >> std::hex >> addr))
+    return false;
+
+  player = mySystem->peek(addr);
+  player = std::min(player, numPlayers());
+
+  // 3. retrieve current scores for all players
+  if (!(buf >> format && buf >> std::dec >> scoreMult && buf >> std::hex >> numScoreAddr))
+    return false;
+
+  for (int i = 0; i < numPlayers(); ++i)
+  {
+    Int32 totalScore = 0;
+
+    for (int j = 0; j < numScoreAddr; ++j)
+    {
+      Int32 score;
+
+      if (!(buf >> std::hex >> addr))
+        return false;
+
+      totalScore *= (format == 'b') ? 100 : 256;
+
+      score = mySystem->peek(addr);
+      if (format == 'b')
+        score = (score >> 4) * 10 + score % 16;
+      totalScore += score;
+    }
+    scores[i] = totalScore * scoreMult;
+  }
+  return true;
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Int32 Console::variation()
+{
+  Int32 variation, player, scores[4];
+
+  if (parseAdresses(variation, player, scores))
+    return variation;
+
+  return -1;
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Int32 Console::player()
+{
+  Int32 variation, player, scores[4];
+
+  if (parseAdresses(variation, player, scores))
+    return player;
+
+  return -1;
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Int32 Console::score()
+{
+  Int32 variation, player, scores[4];
+
+  if (parseAdresses(variation, player, scores))
+    return scores[std::min(player, Int32(3))];
+
+  return -1;
+}
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 PaletteArray Console::ourNTSCPalette = {
   0x000000, 0, 0x4a4a4a, 0, 0x6f6f6f, 0, 0x8e8e8e, 0,
diff --git a/src/emucore/Console.hxx b/src/emucore/Console.hxx
index eb85025a6..c46d5780e 100644
--- a/src/emucore/Console.hxx
+++ b/src/emucore/Console.hxx
@@ -326,6 +326,16 @@ class Console : public Serializable, public ConsoleIO
     */
     void setTIAProperties();
 
+    /*
+      Methods for returning high score related variables
+      Return -1 if undefined
+    */
+    Int32 numVariations();
+    Int32 numPlayers();
+    Int32 variation();
+    Int32 player();
+    Int32 score();
+
   private:
     /**
      * Define console timing based on current display format
@@ -442,6 +452,8 @@ class Console : public Serializable, public ConsoleIO
     // The audio settings
     AudioSettings& myAudioSettings;
 
+    bool parseAdresses(Int32& variation, Int32& player, Int32 scores[]);
+
     // Table of RGB values for NTSC, PAL and SECAM
     static PaletteArray ourNTSCPalette;
     static PaletteArray ourPALPalette;
diff --git a/src/emucore/Event.hxx b/src/emucore/Event.hxx
index b82bb7f50..9a3925650 100644
--- a/src/emucore/Event.hxx
+++ b/src/emucore/Event.hxx
@@ -120,6 +120,7 @@ class Event
       ToggleFrameStats, ToggleSAPortOrder, ExitGame,
 
       // add new events from here to avoid that user remapped events get overwritten
+      ShowScore, ShowVariation,
 
       LastType
     };
diff --git a/src/emucore/EventHandler.cxx b/src/emucore/EventHandler.cxx
index 70b3c6d0c..fb251af72 100644
--- a/src/emucore/EventHandler.cxx
+++ b/src/emucore/EventHandler.cxx
@@ -717,6 +717,24 @@ void EventHandler::handleEvent(Event::Type event, Int32 value, bool repeated)
       if(pressed && !repeated) myOSystem.frameBuffer().tiaSurface().saveSnapShot();
       return;
 
+    case Event::ShowScore:
+      if (pressed)
+      {
+        ostringstream msg;
+        msg << "Score: " << myOSystem.console().score();
+        myOSystem.frameBuffer().showMessage(msg.str());
+      }
+      return;
+
+    case Event::ShowVariation:
+      if (pressed)
+      {
+        ostringstream msg;
+        msg << "Variation: " << myOSystem.console().variation();
+        myOSystem.frameBuffer().showMessage(msg.str());
+      }
+      return;
+      
     case Event::ExitMode:
       // Special handling for Escape key
       // Basically, exit whichever mode we're currently in
@@ -1987,7 +2005,9 @@ EventHandler::EmulActionList EventHandler::ourEmulActionList = { {
   { Event::Combo13,                 "Combo 13",                              "" },
   { Event::Combo14,                 "Combo 14",                              "" },
   { Event::Combo15,                 "Combo 15",                              "" },
-  { Event::Combo16,                 "Combo 16",                              "" }
+  { Event::Combo16,                 "Combo 16",                              "" },
+  { Event::ShowScore,               "Display current score",                 "" },
+  { Event::ShowVariation,           "Display current variation",             "" },
 } };
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -2026,6 +2046,7 @@ const Event::EventSet EventHandler::MiscEvents = {
   // Event::MouseButtonLeftValue, Event::MouseButtonRightValue,
   Event::HandleMouseControl, Event::ToggleGrabMouse,
   Event::ToggleSAPortOrder,
+  Event::ShowScore, Event::ShowVariation,
 };
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
diff --git a/src/emucore/EventHandler.hxx b/src/emucore/EventHandler.hxx
index 7fa56d17d..d27b37d80 100644
--- a/src/emucore/EventHandler.hxx
+++ b/src/emucore/EventHandler.hxx
@@ -468,7 +468,7 @@ class EventHandler
     #else
       PNG_SIZE             = 0,
     #endif
-      EMUL_ACTIONLIST_SIZE = 144 + PNG_SIZE + COMBO_SIZE,
+      EMUL_ACTIONLIST_SIZE = 144 + 2 + PNG_SIZE + COMBO_SIZE,
       MENU_ACTIONLIST_SIZE = 18
     ;
 
diff --git a/src/emucore/Props.cxx b/src/emucore/Props.cxx
index 0ff65f975..6b3296262 100644
--- a/src/emucore/Props.cxx
+++ b/src/emucore/Props.cxx
@@ -255,7 +255,10 @@ void Properties::print() const
        << get(PropType::Display_Format)         << "|"
        << get(PropType::Display_VCenter)        << "|"
        << get(PropType::Display_Phosphor)       << "|"
-       << get(PropType::Display_PPBlend)
+       << get(PropType::Display_PPBlend)        << "|"
+       << get(PropType::Cart_Players)           << "|"
+       << get(PropType::Cart_Variations)        << "|"
+       << get(PropType::Cart_Addresses)
        << endl;
 }
 
@@ -300,7 +303,10 @@ void Properties::printHeader()
        << "Display_Format|"
        << "Display_VCenter|"
        << "Display_Phosphor|"
-       << "Display_PPBlend"
+       << "Display_PPBlend|"
+       << "Cart_Players|"
+       << "Cart_Variations|"
+       << "Cart_Addresses"
        << endl;
 }
 
@@ -327,7 +333,10 @@ std::array<string, Properties::NUM_PROPS> Properties::ourDefaultProperties =
   "AUTO",   // Display.Format
   "0",      // Display.VCenter
   "NO",     // Display.Phosphor
-  "0"       // Display.PPBlend
+  "0",      // Display.PPBlend
+  "1",      // Cart.Players
+  "1",      // Cart.Variations
+  ""        // Cart.Addresses
 };
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -353,5 +362,8 @@ std::array<string, Properties::NUM_PROPS> Properties::ourPropertyNames =
   "Display.Format",
   "Display.VCenter",
   "Display.Phosphor",
-  "Display.PPBlend"
+  "Display.PPBlend",
+  "Cart.Players",
+  "Cart.Variations",
+  "Cart.Addresses"
 };
diff --git a/src/emucore/Props.hxx b/src/emucore/Props.hxx
index af3f67568..d7fcbf7b4 100644
--- a/src/emucore/Props.hxx
+++ b/src/emucore/Props.hxx
@@ -42,6 +42,9 @@ enum class PropType : uInt8 {
   Display_VCenter,
   Display_Phosphor,
   Display_PPBlend,
+  Cart_Players,
+  Cart_Variations,
+  Cart_Addresses,
   NumTypes
 };
 
diff --git a/src/emucore/stella.pro b/src/emucore/stella.pro
index f2edd993d..e48c5808a 100644
--- a/src/emucore/stella.pro
+++ b/src/emucore/stella.pro
@@ -210,6 +210,10 @@
 "Cart.Manufacturer" "Parker Brothers, Ed English, David Lamkins"
 "Cart.ModelNo" "931502"
 "Cart.Name" "Frogger (1982) (Parker Bros) (PAL)"
+"Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "6"
+"Cart.Addresses" "b,0,dd,e6,b,1,2,cc,ce,cd,cf"
 ""
 
 "Cart.MD5" "02cee0b140d2f1a1efcfb1d482a5c392"
@@ -638,6 +642,10 @@
 "Cart.Manufacturer" "Parker Brothers, Ed English, David Lamkins"
 "Cart.ModelNo" "PB5300"
 "Cart.Name" "Frogger (1982) (Parker Bros)"
+"Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "6"
+"Cart.Addresses" "b,0,dd,e6,b,1,2,cc,ce,cd,cf"
 ""
 
 "Cart.MD5" "082fdc8bd47fef01482ce5883c4ffdb8"
@@ -1501,6 +1509,9 @@
 "Cart.Manufacturer" "Activision, Bob Whitehead - Ariola"
 "Cart.ModelNo" "EAX-015, EAX-015-04I - 711 015-725"
 "Cart.Name" "Chopper Command (1982) (Activision) (PAL)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "11bcf5c752088b5aaf86d6c7a6a11e8d"
@@ -2209,6 +2220,9 @@
 "Cart.ModelNo" "CX2649, CX2649P"
 "Cart.Name" "Asteroids (1981) (Atari) (PAL) [a2]"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "19b3b807507653516985ba95da92499d"
@@ -2380,6 +2394,9 @@
 "Cart.Manufacturer" "Jone Yuan Telephonic Enterprise Co"
 "Cart.Name" "Chopper Command (Jone Yuan)"
 "Cart.Note" "2600 Screen Search Console"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "1cafa9f3f9a2fce4af6e4b85a2bbd254"
@@ -3138,6 +3155,9 @@
 "Cart.Manufacturer" "Activision, Bob Whitehead"
 "Cart.ModelNo" "AX-015, AX-015-04"
 "Cart.Name" "Chopper Command (1982) (Activision) (16K)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "25e73efb9a6edf119114718bd2f646ba"
@@ -3553,6 +3573,9 @@
 "Cart.ModelNo" "PGP213"
 "Cart.Name" "Spy Vs. Spy (4 Game in One) (1983) (BitCorp) (PAL)"
 "Cart.Note" "AKA Chopper Command"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "2a9f9001540c55a302befd8e9d54b47b"
@@ -3877,6 +3900,9 @@
 "Controller.Right" "DRIVING"
 "Controller.MouseAxis" "58"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "2dcf9ce486393cd36ca0928cd53b96cb"
@@ -4262,6 +4288,9 @@
 "Cart.Note" "Hack of Asteroids"
 "Cart.Rarity" "Hack"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "3276c777cbe97cdd2b4a63ffc16b7151"
@@ -4727,6 +4756,9 @@
 "Cart.Name" "Pyramid War (1983) (Rainbow Vision) (PAL) [a2]"
 "Cart.Note" "AKA Chopper Command"
 "Display.Format" "PAL"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "384db97670817103dd8c0bbdef132445"
@@ -5097,6 +5129,9 @@
 "Cart.Manufacturer" "Dismac"
 "Cart.Name" "Comando Suicida (Dismac)"
 "Cart.Note" "AKA Chopper Command"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "3c7a7b3a0a7e6319b2fa0f923ef6c9af"
@@ -5270,6 +5305,9 @@
 "Cart.Note" "Genesis controller (C is hyperspace)"
 "Cart.Rarity" "Hack of Asteroids"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "3e5ca1afaa27c5da3c54c9942fec528b"
@@ -6022,6 +6060,9 @@
 "Cart.Note" "Hack of Asteroids"
 "Cart.Rarity" "Hack"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "47cd61f83457a0890de381e478f5cf5f"
@@ -6879,6 +6920,9 @@
 "Cart.Manufacturer" "Activision, Bob Whitehead"
 "Cart.ModelNo" "AX-015, AX-015-04"
 "Cart.Name" "Chopper Command (1982) (Activision) (8K)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "521f4dd1eb84a09b2b19959a41839aad"
@@ -7677,6 +7721,9 @@
 "Cart.Note" "Hack of Asteroids"
 "Cart.Rarity" "Hack"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "5bcc83677d68f7ef74c1b4a0697ba2a8"
@@ -7711,6 +7758,9 @@
 "Cart.ModelNo" "SS-004"
 "Cart.Name" "Pyramid War (1983) (Rainbow Vision) (PAL) [a1]"
 "Cart.Note" "AKA Chopper Command"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "5c19f6da638c4c7c1f98d09e63df43e4"
@@ -9458,6 +9508,9 @@
 "Cart.ModelNo" "SS-004"
 "Cart.Name" "Pyramid War (1983) (Rainbow Vision) (PAL)"
 "Cart.Note" "AKA Chopper Command"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "6fc27a9233fc69d28d3f190b4ff80f03"
@@ -11366,6 +11419,9 @@
 "Cart.Manufacturer" "CCE"
 "Cart.ModelNo" "C-827"
 "Cart.Name" "Chopper Command (1983) (CCE)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "85b1bca93e69f13905107cc802a02470"
@@ -11927,6 +11983,9 @@
 "Cart.Name" "Asteroids (1981) (Atari) (PAL)"
 "Cart.Rarity" "Common"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "8d00a38f4c8f8800f1c237215ac243fc"
@@ -11966,6 +12025,9 @@
 "Cart.Note" "Hack of Asteroids"
 "Cart.Rarity" "Hack"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "8e0ab801b1705a740b476b7f588c6d16"
@@ -14070,6 +14132,9 @@
 "Cart.ModelNo" "CX2649, CX2649P"
 "Cart.Name" "Asteroids (1981) (Atari) (PAL) [a1]"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "a97733b0852ee3096300102cb0689175"
@@ -14752,6 +14817,9 @@
 "Cart.Name" "Asteroids (1981) (Atari) [a1]"
 "Cart.Rarity" "Common"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "b23ebf427713dd0198b7ef47dbd07ef4"
@@ -15326,6 +15394,9 @@
 "Cart.Manufacturer" "SuperVision"
 "Cart.ModelNo" "405, 427, 806, 808, 813, 816"
 "Cart.Name" "Chopper Command (SuperVision) (PAL)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "ba257438f8a78862a9e014d831143690"
@@ -15399,6 +15470,9 @@
 "Cart.ModelNo" "CX2649, CX2649P"
 "Cart.Name" "Asteroids (1981) (Atari) (PAL) [no copyright]"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "bb579404924c40ca378b4aff6ccf302d"
@@ -15835,6 +15909,9 @@
 "Cart.Manufacturer" "Activision, Bob Whitehead"
 "Cart.ModelNo" "AX-015, AX-015-04"
 "Cart.Name" "Chopper Command (1982) (Activision)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "c1e6e4e7ef5f146388a090f1c469a2fa"
@@ -15946,6 +16023,9 @@
 "Cart.MD5" "c2c7a11717e255593e54d0acaf653ee5"
 "Cart.Name" "Chopper Command (208 in 1) (Unknown) (PAL) (Hack)"
 "Cart.Rarity" "Hack"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "c2c8eb642765137bb82b83a65232961f"
@@ -16780,6 +16860,9 @@
 "Cart.Name" "Asteroids (1981) (Atari) [no copyright]"
 "Cart.Rarity" "Common"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "cccfe9e9a11b1dad04beba46eefb7351"
@@ -17595,6 +17678,9 @@
 "Cart.ModelNo" "CX2649, 49-75163"
 "Cart.Name" "Asteroids (1981) (Atari) [a2]"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "d573089534ca596e64efef474be7b6bc"
@@ -17983,6 +18069,9 @@
 "Cart.MD5" "da66d75e4b47fab99733529743f86f4f"
 "Cart.Manufacturer" "Digitel"
 "Cart.Name" "Chopper Command (1983) (Digitel)"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "da732c57697ad7d7af414998fa527e75"
@@ -18279,6 +18368,9 @@
 "Cart.ModelNo" "CX2649, 49-75163"
 "Cart.Name" "Asteroids (1981) (Atari)"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "dd8a2124d4eda200df715c698a6ea887"
@@ -18435,6 +18527,9 @@
 "Cart.Note" "Hack of Asteroids"
 "Cart.Rarity" "Hack"
 "Display.Phosphor" "YES"
+"Cart.Players" "2"
+"Cart.Variations" "66"
+"Cart.Addresses" "h,1,80,c7,b,10,2,bd,be,c0,c1"
 ""
 
 "Cart.MD5" "df5cc5cccdc140eb7107f5b8adfacda1"
@@ -20717,6 +20812,9 @@
 "Cart.Name" "Chopper Command (Jone Yuan) (Hack)"
 "Cart.Note" "2600 Screen Search Console"
 "Cart.Rarity" "Hack"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "f8b2a6a4d73ebff10d805a9b59041986"
@@ -21381,6 +21479,9 @@
 "Cart.Manufacturer" "CCE"
 "Cart.ModelNo" "C-827"
 "Cart.Name" "Chopper Command (1983) (CCE) [a]"
+"Cart.Players" "2"
+"Cart.Variations" "4"
+"Cart.Addresses" "b,1,e0,eb,b,1,3,ec,ee,f0,ed,ef,f1"
 ""
 
 "Cart.MD5" "ffe51989ba6da2c6ae5a12d277862e16"