I wonder what keys the Super Off Road ROM is looking for. It wants me to do my initials in the onscreen keyboard, but arrow keys not working. Hmm. Does the gameboy have more buttons not emulated here?
Boulderdash actually works pretty good if you can put up with the SEVERE eink driver artifacts caused by every game tile being animated. It has smears in it just like my little vidtest demo. Moving full tiles would probably work better than fractional tile scrolling.
You actually have to DESIGN your animation to compensate for eink artifacts (or write your own eink drivers.)