Are you stuck on a creative block? Do you have too many game ideas for a game jam? Maybe you just want a bigger challenge.
Whatever the case, just join the Themes+ Jam!
This jam is designed for you to make a game simultaneously for this and another jam. Be it the Ludum Dare, GM48, Alakajam, GamesPlus Jam, Mini Jam, whatever. Just use at least one of the themes or challenges from this page and you're ready to go! You can then submit the game for both jams.
If you want an even bigger challenge, try using every theme and challenge on this page, or even submit for other jams! (It's what I did, and the most extreme example is FLOOD: The Crystal Ninja, which was made for 8 jams at once!)
Just a few:
Secondary Theme: Unlockables
Tertiary Theme: Outside the Game Window
Try-something-new Challenge: Learn how to use shaders
Design Challenge: Use few gameplay mechanics, but they can be used to do lots of things
Art Challenge: Make all art in MS Paint
Audio Challenge: Try to mimick famous sound effects from other games
Remember, you don't have to use all of the themes! You can use some, you can only use the Main Theme. It's up to you!