I've added support for keypad (at least the numbers, RETN and the left arrow) to the latest version of CVBasic.
With this is enough to make GORILLA.BAS to work in Creativision.
You can download it from here: https://nanochess.org/archive/gorilla_m ... vbasic.zip
This is a 32KB ROM that you need to run in the Creativision emulator using -f.
Enjoy it!
P.S: I would appreciate a picture of the game running on your Creativision
