Help to remember game on amiga?

any retro gamers out there remember this game and can tell me what it is called as it has been bugging me for years.. and links to screen shots would be great too... i remember it being set on a spaceship and you had to collect crystals, the main thing i remember is that you had to p through doors and to do this you had to spell a word set by the talking computer by the door.. at the beginning of the game you chose a difficulty for the spelling... our dad would let us play to help practice spelling... i think there were aliens like little bugs that if you stood on one you span around and umingly lost a life........ can anyone help please?