Dreamcast-Talk.com

https://shop.terraonion.com/en/products ... ridge.html
If a Mega CD is too expensive nowadays the Mega SD allows you to play Sega CD titles without the hardware. It's not cheap either tho.

Dark Wizard (though it's a verrry slow RPG)
ECCO the Dolphin: The Tides of Time
Lunar: The Silver Star
Lunar: Eternal Blue
Mortal Kombat (nigh on Arcade perfect with the theme tune from the movie!)
Road Avenger (the best of the QTE titles)
Shining Force CD
Silpheed
Sol Feace
Sonic CD
SoulStar
The Terminator (superb platform-shooter)

AVOID
Bouncers (Crap 1on1 basketball)
Brutal: Paws of Fury (awful 1on1 fighter)
ESPN Baseball Tonight (it's baseball *snore*)
Sewer Shark (bland and dull fmv title)
Star Wars: Rebel Strike (bad fmv with shit controls)
Time Gal (shit fmv with annoying voice)

Jaguar XJ220 is half decent if you're into racing games. The track editor is awesome.

Heart of the alien

Monkey island

Snatcher