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i would go buy resident evil 4 used. i didnt think it would be this great. get for gamecube though since it was originally made for it.

other games i would go for are gta. devil may cry. maybe even kingdom hearts 1 or 2 they both take a good month if you play it right instead of just running threw it.

Final Fantasy 12 for the PS2 will run you about 50 hours of gameplay time. If you want to do every single little thing in the game, you're looking at well over 100 hours of gameplay.

However Final Fantasy 10 is a far superior game with similar gameplay amounts.

For the PS3 you could try Ninja Gaiden Sigma. It's about a 20 hour game, but you could play it on very hard mode and it will last you forever because you'll never complete it. :)

I can't think of anything exceptionally long for the Gamecube, sorry.

Ps3 oblivion its a rpg there are tons of quests skills and treasures you can find also tehre are many monsters great wepomnary tons of items. the game is extremely good.

Buy Okami it's lonnnnnnnnnng like 50-hours-long long and it's very good too.