Resident Evil Zero
- Versions: Gamecube
Resident Evil
- Versions: PC, PSX (Resident Evil), PSX (Resident Evil Director's Cut), GC (REmake), DS (Resident Evil: Deadly Silence)
Resident Evil 2
- Versions: PC, PSX (Resident Evil 2), PSX (Resident Evil 2 - Dual Shock edition), DC, GC
Resident Evil 3: Nemesis
- Versions: PC, PSX, DC, GC
Resident Evil Code Veronica X
- Versions: DC, GC, PS2
Resident Evil 4
- Versions: GC, PS2
Other RE games
Resident Evil Survivor
- PSX, PC
Resident Evil Dead Aim
- PS2
Resident Evil: Outbreak
- PS2
Resident Evil: Outbreak File 2
- PS2
System abreviations:
PC: Computer
PSX: Playstation
PS2: Playstation 2
GC: Gamecube
DS: That new nintendo handheld
DC: Dreamcast
There's a couple other re games, but they aren't worth mentioning ^_^
If you want to play all the REs you need a GC and PS2, but a GC will get you all the "main" games.
Oh, and finally...
Zero: Is the events leading up to the mansion incident. Focusing on Rebecca Chambers and STARS Bravo Team.
Deadly Silence is just a REmake of the original RE (PSX version)