My first PC game was King's Quest (1) and it loaded on a cassette tape too.
I had an Intellivision before PCs came out.
Now, my favorite PC games were probably Dungeon Siege 1 & 2 and Final Fantasy 7. I still want a copy of FF7 for my PS.
Oohhh I read back one page ... Raiden and Red Alert ... a friend of mine tweaked the Red Alert game so that German Shepherds came shooting out of the tanks. Hehe, it was fun for a break.