I remember playing a game on my old Mac...
You were playing like some sort of space ship and you were flying around in a maze (I think the maze was blue)

Sometimes you found some yellow obejcs which you could collect and sometimes you found other spaceships which (I think) you could shoot at.

I remember I did not understood the aim of the game but I played it anyway and it's ages since so I can not remember the name of it.

Hope you can help =)