@Sticky: I meant guessing the screen, too. For me it was like recognizing Tetris. But it had a little doubt. In my mind the game (especially the stats at the bottom of the screen) looked a bit different (better). It could have been a cheap rip-off.
Btw. I once made the mistake to buy (and play) a Amiga/C64 game collection. The glory of the old games is mostly in our minds. I was a bit sad to see, what Alien Breed f.e. really looks like (compared to my memories).
I'm also a bit frightened to play TM1 again...