Back in grades 2-3 we used to play some games in a computer room. I don't really know what kind of computers they were, but this was around the early 90's. This could be difficult, as I can only vaguely remember what they look like. :/
There's a game where this kid goes into a school and he has to find some mad scientist before the time runs out. I think there's a bunch of these machines walking around, and you could kill them somehow. I think you were supposed to solve riddles an' shit too. I don't know the name of it.
Probably for DOS or Mac or something.