Figured it out. You have to launch the cei-launcher.p8 first, then once it makes the game files, you use cei-game.p8 to run the game.
Hello, I bought this game to play on my Miyoo Mini, but every time it makes the data1/2 carts, the screen glitches out and corrupts, and it opens the pico 8 CMD. The same thing happens on my laptop. Any idea why?