It would help to add some more clarity to the rules of the jam to specify whether you're looking for games that specifically align with the specs of the 8-bit console (https://en.wikipedia.org/wiki/Third_generation_of_video_game_consoles). I would think that having a rule that the game must be 256x192 or 256x240 resolution with 16, 25, or 32 colors on screen at any time would help to guide the entries, and actually lead to better games.