In this game jam, participants would be challenged to create games that explore the concept of reverse worlds, where the laws of physics and reality are flipped upside down. Here are some possible elements and mechanics that could be incorporated:

1. Gravity: Imagine a world where gravity pulls objects away from the ground, causing them to float upwards. Players would need to navigate this surreal environment, utilizing unique mechanics to traverse obstacles and reach their objectives.

    2.  Time: In this reversed world, time flows in reverse. Players would have to strategically plan their actions and movements to unravel puzzles or overcome challenges. It could involve undoing events, rewinding time, or even experiencing events in reverse order.

   3.  Colors and Light: In this reverse world, colors and light behave in unexpected ways. Players might need to manipulate colors or light sources to reveal hidden paths, change the environment, or even alter the behavior of objects.

   4.  Perception: Explore the idea of reversing perceptions, where things that are normally considered small become large, or vice versa. Players could interact with objects that change in size or perspective, challenging their spatial awareness and problem-solving skills.

   5.   Audio: Experiment with reversing sound, where certain cues or effects play backward. Players could decipher clues or unravel mysteries by meticulously listening to reversed audio and uncovering hidden messages or patterns.

Remember, these are just initial ideas to get your creative juices flowing. Feel free to adapt, combine, or expand upon them to create a game that truly stands out. The possibilities are endless!