Jo Engine is an open source 2D and 3D game engine for the Sega Saturn written in C under MIT license. It allows to develop game easily without extensive knowledge in embedded development. And... games run on emulator and also on the original system !
Website: https://jo-engine.org/
Main forum: https://segaxtreme.net/forums/saturn-dev.34/
X (aka Twitter): https://twitter.com/johannes_fetz
Wikipedia: https://en.wikipedia.org/wiki/Homebrew_(video_games)#Sega_Saturn
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