Netplay support allows up to five players to sit in front of different computers and simultaneously play the same game, or just watch someone else play a game. All the computers have to be connected to a network that allows TCP/IP traffic to flow between them; this includes a local Ethernet-style network, a direct-cable connection, or, if you're lucky and have short ping times, the Internet.
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<p>
Snes9x netplay inevitably synchronizes all the computers at the sacrifice of the speed of input response. Note that netplay is not compatible between platforms - You can't play via network with Windows users.
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<h3>How to Netplay</h3>
<p>
The player with the fastest Mac should act as the server. The others are clients. Server should open the port 6096/TCP.<br>
Here is the workflow to netplay with up to five players.
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<ul>
<li><tablesummary="netplay howto">
<tbody>
<trvalign="top">
<tdstyle="width:9em">Server</td>
<td>If you guys want to play with Multi Player 5, choose 'Multi Tap' in 'Input Device' in 'Emulation' menu. (Clients don't need to select it.)</td>
<td>Choose 'Server...' in 'Netplay' menu. The clients list appears. The first client is yourself.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Client</td>
<td>Choose 'Client...' in 'Netplay' menu.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Client</td>
<td>Input server's IP address and your name. Press 'Connect' button.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Server</td>
<td>The clients appear in the clients list with 'Connecting' status.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Client</td>
<td>A ROM load dialog appears. Open the same ROM image as server's.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Server</td>
<td>Wait until all clients become 'Ready'. Press 'Play' button.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Client</td>
<td>The players list dialog appears. Press 'OK' button.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Client</td>
<td>Netplay starts.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Server</td>
<td>The game is reset and netplay starts.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Server</td>
<td>Adjust the timing by '2P-L' and '2P-R' button. If 'Show Onscreen Information' is active in 'Preferences' dialog, a value appears in both the server's and client's game screen. Increasing this value will smooth the frame rate, but also delay the input response.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Server, Client</td>
<td>All functions (screenshot, etc.) are unusable.</td>
</tr>
<trvalign="top">
<tdstyle="width:9em">Client</td>
<td>Clients cannot stop netplay by themselves.</td>
