@dongtuuyen haven‘t read anyone here mentioning he/she develop a game in lua, but libretro has some examples of functional games here:

https://github.com/libretro/lutro-platformer
https://github.com/libretro/lutro-game-of-life
https://github.com/libretro/lutro-snake
https://github.com/libretro/lutro-tetris
https://github.com/libretro/lutro-iyfct
https://github.com/libretro/lutro-pong

@lucas2699 have you tried using lutro on other platform? It might be related to the game more than recalbox.

@Substring

It seems to use Love Free 2d Game engine that runs on Lua.

https://love2d.org/
0_1486525137330_Love2d.JPG