Here's a port of Hex-A-Hop, a cool puzzle game for GCW0.
The only difference from stable release is the fact it uses a bigger, more suited font for the smaller GCW's screen.
Of course, the controls were adapted for the GCW as well.
I have not tested on a real GCW0 but it works under Qemu.
You can download it here :https://github.com/gameblabla/hexahop/raw/master/hexahop.opk