Unless it doubles as a handwarmer, you don't got a Pi4 in there...
is there any other way to play these games?
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Maybe a late reply, but if HDMI and buttons works on your gamepi, go back into the terminal and enable SPI using sudo raspi-config. That worked for me.
@mitu Thanks for your suggestion. I had the same problem as the original poster. Ah yes ... read the instructions.