I participated in the 2018 and 2022 jams.
In 2018, I initially wanted to make a 3-D game in which you explore a strange, dream-like world, but because of Godot 2.x's immense issues with loading models I gave up on that idea and made MousePong on the last day of the jam just to submit something.
Then, in 2022 I made Tux's Revenge, a game in the form of an IWAD for the ZDoom engine; definitely a huge improvement over MousePong, though it's not something I'm particularly proud of due to its numerous shortcomings.
This year I'm writing a game in C using SDL2 called Devious Licks, inspired by the 2021 TikTok challenge & media panic of the same name in which kids would steal (or at least pretend to have stolen) school property.