priorities

This could actually work really smoothly. By default, it spins up the processes as now, but passing a port number to each process and communicating over TCP/IP. The data sent / received could remain the same. Then we could add command line arguments for:

1. Launching Robocode processes and doing nothing, just listening for commands.
2. Accepting a list of host:port of additional processes. In addition to the normal processes, launch a thread for each remote process.

So on your extra machine, you do #1, and on your primary machine you do #2, and voila!

Edit: Except for copying the necessary bot JARs. That would be a little more complicated.