Dang....I can remember shelling out like $200 (I think?) when SegaCD first came out. It came with some sort of 'bonus CD'....all I can remember is it played some Hendrix tune and had some wacky LSD-like graphics....wish I could find that somewhere.
Anyhow, I thoroughly enjoyed the Genesis way back then:
-Populous
-Toe Jam and Earl
-Bubsy
-Arnold Palmer Golf
-Alex Kidd
-Space Harrier II - awesome!
-Spider Man Vs. The KingPin - I never did get to defuse the bomb at the end *shrug*
-Target Earth - Tried it a while ago on an emulator & KB+Mouse......lol it didn't go well
-Desert Strike
-Sonic
-Castle of Illusion Starring Mickey Mouse - loved the graphics
-Chakan
-ESWAT
-Herzog Zwei - lots of fun!
-Ghouls n Ghosts - Quite challenging...never did 'beat' it
-Fantasia - great graphics, but the controls sucked
-James 'Buster' Douglas Knockout Boxing - lol
-Night Trap - omg it was pretty bad, but had Dana Plato in a nighty. It seemed it was highly controversial back then too
There's more of course..........unfortunately I had to sell everything way back when I needed the money....got rid of an Intellivision about the same time too
Edit:
found it!