Since the author just posted the source code a few days ago, it can be compiled for Gameshell directly, and doesn’t require the box86 emulator anymore. This means it should also run at full speed (seemed like it was before anyway), and should be more stable.
I compiled and it seems to run fine. Here’s the full (free) package. It’s identical to the one @slock posted above, but with box86 and the x86 binaries removed, and the Gameshell binary included instead.