We have a Wii for about 7 months now. We have 14 games (15 with Wii Sports included) namely:
Super Mario Galaxy
Zelda Twilight Princess
Metroid Prime 3: Corruption
Resident Evil 4: Wii Edition
Super Paper Mario
Endless Ocean
Resident Evil: The Umbrella Chronicles
Mario Strikers Charged Football
Metal Slug Anthology
Thrillville: Off the Rails
Super Monkey Ball Banana Blitz
Mario Party 8
Link's Crossbow Training with Zapper
Wii Play
4 are third party, 10 are first party.
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We have a Playstation for about 3,5 months. We have 4 games:
Assassin's Creed
Fifa 08
Guitar Hero 3
Pro Evolution Soccer 2008
All 4 are third party.