In the latest issue of OPM, there's a list on pages 92-93 of what they thought were the 20 worst games ever made for a PlayStation system. Of course, this list covers PSX and PS2 games, and isn't limited to system exclusives. Here's the list:
20 - Street Raquetball (PSX)
19 - Spec Ops (PSX)
18 - South Park: Chef's Luv Shack (PSX)
17 - Shadow Tower (PSX)
16 - Racing (PSX)
15 - MTV's Celebrity Deathmatch (PSX/PS2)
14 - The Lost World: Jurassic Park (PSX)
13 - Hooters Road Trip (PSX)
12 - The Fifth Element (PSX)
11 - Batman Beyond: Return Of The Joker (PSX)
10 - Armorines: Project S.W.A.R.M. (PSX)
9 - 3Xtreme (PSX)
8 - TMNT 2: Battle Nexus (PS2)
7 - NARC (PS2)
6 - McFarlane's Evil Prophecy (PS2)
5 - The Guy Game (PS2)
4 - Fugitive Hunter (PS2)
3 - Driven (PS2)
2 - DICE: DNA Integrated Cybernetic Enterprises (PS2)
1 - Catwoman (PS2)