here how to use network mode.
be a server (one player must be)
- click 'network mode'
- then select 'server'
- then connect
- textbox shows your ip
- wait for same players -> their ip will write in the box
- when all players are read, close the form
- then select your snake and wait that all done
- then click 'new game'
- move you snake!
connect to a server
- click 'network mode'
- then select 'client'
- write the server
- then click 'connect'
- textbox will be green if you are connected
- close form
- choose you snake
- wait server starts the game!