Get the Steam version, it has 7 games:
- Crazy Taxi
- SEGA Bass Fishing
- Sonic Adventure DX
- Space Channel 5: Part 2
- Jet Set Radio
- NiGHTS Into Dreams
- Sonic Adventure 2

I've only played SADX, SA2, and Jet Set Radio but got this collection on sale for like $5 which was very worth it. (Also, mod SADX. Very worth it and definitely improves the experience from OG SADX and the OG Dreamcast version.)

PS: I don't have the 360 version, backloggd isn't letting me pick just the PC version for some reason.