How to have arduinos work together? I want to have an Arduino based game you can play on a nokia 5110 screen. The problem is you cant make a medium sized game on an Arduino because the flash size is only 32k. I sit possible to have multiple Arduino's connected to each other, communicating to make it possible to have a bigger game. If it is possible how does it work?
Yes and no.

Yes you can make Arduinos communicate with each other and send messages to each other.

Can you use that to make a game?  Possibly.

Is it worth the effort?  No.

It would be a huge amount of work and be overly complex when you could just use a bigger Arduino, like a Mega2560 or a Due.