Theme/Mechanic: 

This Game Jam is about creating games that have a mechanic that allows the player to switch between 2d and 3d. This Game Jam allows you to create any genre as long, as long the game includes the dimension-changing mechanic, though it is recommended that you pick between the game genres listed below.

Horror, Platformer, Third-person shooter, puzzle or stealth.

Rules:  

• Don't be a jerk.
• You can use system code (saving, loading, or other common game systems) you wrote before the jam, but don't use anything that defeats the purpose of doing the jam at all (for example, an entire game, or a template gotten off an asset store), or anything that would get you in legal trouble.
• Do not infringe copyright laws.
• No NSFW (sexual - this doesn't include gore) content
• Don't do something that will make me edit this rules section.
• Have fun!

Game Rating:

• Overall - your overall rating
• Gameplay - how nice the game plays
• Graphics - how nice the game looks - this includes particle effects and anything related to the appearance of the game.
• Audio - how nice the game sounds, whether with music or sound effects
• Mechanic - how well or creative the mechanic is used 

FAQ:

What game engines am I allowed to use? All game engines are allowed!

Can I work in a group? Yes groups are allowed.

Can I start now? Nope!

Is there a prize?  The prize is the game you made and experince you have gained.