Here are some tips for you people who want to join the jam!
Don’t make Online Multiplayer games. They take too much time to code.
Start small, like a 2D type of fighting game.
Don’t make the game hard to understand. If you have split screen, it will be hard for the players to know who is which.
No eye candy. Sorry, but if you want to submit ASAP, no eye candy. That includes particles and camera effects.