Hmm... This is always a little hard and I'm afraid I won't be able to name 20 games total and five games this gen. Anyway, I might as well try.
All-time:
- Metal Gear Solid (PSX)
- Metal Gear Solid 2: Sons of Liberty (PS2) (very close to and sometimes even above MGS1)
- Final Fantasy X (PS2)
- Wolfenstein: Enemy Territory (PC)
- Spear of Destiny (PC)
- Enemy Territory: QUAKE Wars (PC)
- Crash Bandicoot 3 (PSX)
- ICO (PS2) (I really like it even though I haven't even got out of the castle yet - and that's months ago)
- Metal Gear Solid 3: Snake Eater (PS2)
- Metal Gear Solid 4: Guns of the Patriots (PS3) (very even with MGS3)
- Crash Team Racing (PSX)
- Quake II (PSX)
- Dynasty Warriors 5 (PS2) (has its drawbacks though)
- Driver 2 (PSX) (this is probably one of my most played games ever - don't play it so much anymore though)
- Return to Castle Wolfenstein (PC)
This gen:
- Enemy Territory: QUAKE Wars (PC)
- Metal Gear Solid 4: Guns of the Patriots (PS3)
- Uncharted: Drake's Fortune (PS3)
I could name a few others for this gen but I guess they would seem better than they are. That is because I haven't played too many games this gen so I would have to put a few bad games on the list as well. The same goes for the all-time list, too.
The exact order is probably very unaccurate. Also, I might have to update the list later as I've probably forgotten quite a few games.
Oh, and shut up about my usage of PSX - that's how it was called back then and that's how I will call it as long as possible, no matter another PSX appearing (has happened already but was a flop).