“Rollin” by SAV Creations (published by Ticsoft) was one of the DOS games I played the most as a kid.
I got it from my grandparents, and I played it with my brothers on their old PC, which had also been a gift from them. I think it was a 386. This was around 1996, when I was 9 or 10 years old. It had a Turbo key that switched between 16 MHz and 40 MHz. If I pressed that key while playing, the game became noticeably slower.
That machine did not have a sound card (or at least it was not working), so all I knew for years were the simple beeps from the built-in PC speaker. Only much later I found out that the game actually had a really cool soundtrack.
I spent so much time with this game that I even dreamt about it. Not in a good way, though. It was a nightmare: I dreamt that I was falling into the purple grid, just like the ball falls off the platform in the game. When I told my mother, she was pretty shocked and thought I was spending way too much time on the computer.
Even now, I still remember the look and the feeling of those levels very clearly.