To understand how the classic game Micemen worked, please have a look at these non-RnD remakes:

HTML/Javascript: RnDMen V1.1
- open RnDMen\RnDMen.htm with browser
- requires browser with Javascript enabled

C#/.NET: RnDMen V1.0
- run RnDMen\RnDMen.exe
- requires Microsoft .NET Framework
- to play in network mode:
     run host with
        RnDMen.exe 0.0.0.0 p
        (p = port, e.g. 11000)
     run client with
        RndMen.exe x.x.x.x p
        (x.x.x.x = IP of host; p = same port like host, e.g. 11000)