That was it. Boulder Dash. My friend had a Commodore 64, and I sometimes played this at her home. I loved it, I really did. We didn't have any kind of computer or gaming device, and I didn't really want one, but I loved this game. It was fun and challenging in its simplicity, and it was new. This happened when I was twelve, 1987. Much later, probably in 1997, I remembered the game again, and loaded it on our computer. Payed it for a long while too. Now I play it online sometimes.