I didn't have an NEC PC-9801, but it is reminiscent of some PC games I played as a child as well. I had some initial difficulty figuring out how to play (which I actually found thematically appropriate given my experiences with some computer games when I was younger), but I did enjoy it. I won without *too* much trouble, but it wasn't clear to me if there were differences between the schemes, the tiles that I was using them on, or how the different schemes and tiles interacted. If I'd lost a few times, I'd probably have gotten a better feel for any subtle differences. I think it'd be a good baseline to tweak difficulty and add depth via more pronounced differences in the schemes and tiles. Good job this weekend. :)