cool game. It's simple and challenging.
This game was developed as part of Octojam 8, using Octo. Its source and assets are all made available under a Creative Commons Zero "No Rights Reserved" license. This game should work on any modern SCHIP interpreter, with one important caveat: it relies upon drawing 16x16 sprites while in 64x32 "low-resolution" display mode; as a consequence it will not work on an HP-48 version of SCHIP.