Hi, I've just released Panda Push Haven, a homebrew Sokoban game written in Rust for the PSP.
I wanted it to feel like a proper PSP release rather than a bare EBOOT. It has 200 puzzles, undo and best-move tracking, automatic saves, day and night themes, smooth movement, small particle effects, original music, and its own XMB artwork and animated preview.
The same EBOOT runs on real hardware and PPSSPP.
PandaSokoban is available for free, contributions welcome.
https://qdmware.itch.io/panda-push-haven
If you run into a problem, please include your PSP model or PPSSPP version in the reply.