Here's the ROM which I got from one of those MAME archives (they also have magic lamp). To play it use Taizou's hhugboy and turn off using the bootstrap ROM because that makes it not work. Then use the unlicensed compatibility mode for Pokemon Diamond/Jade. The game is pretty similar to Tetris, I wrote up a description of it on the wiki. It's probably the oldest unlicensed gameboy game, though maybe Sachen made one earlier. As far as it being bland, I would say that it is more of just simple than anything. Most unlicensed GB stuff made in the early 90s was not very complex, though a lot of them had their own little charm