This is better. Mouse Trap has been around for donkey's years since its original release by MicroValue (back in 1987, to be exact), and it remains now what it was then, a fun little game. It's a platform game very much in the tradition of Manic Miner, and it's simple to play but tough to beat.
The graphics are pretty primitive but in a charming kind of way, and while the music is appalling it somehow seems to fit in quite nicely. You get dozens of screens for your money, and they're all pretty challenging, so there's enough fun in here to keep you playing for at least a good few hours.
Technically I must admit that it's useless, but who gives a monkey's about things like that anyway?