Here are some simple games for you. They all use smolpxl, a simple framework for making retro-like pixel games. There's an awesome video and blog showing how to use it by implementing Snake in it. Other Smolpxl games can be found at https://smolpxl.artificialworlds.net/
Games I wrote are
The code can be found at https://git.domainepublic.net/ilja/smolpxl/
Feel free to drop some feedback on fedi, I'm ilja@ilja.space