Games are designed for a specific console, so no, they won't.
No. While Xbox 360 and PlayStation 2 games both utilize DVDs as storage mediums, the formatting and architectures for which the games are designed to run are are completely different.
No.
No
No PlayStation 3 games do NOT work on the PlayStation 2 system.
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No. Halo 3 is a game made for Microsoft's Xbox 360, it would not work on Sony's playstation 2 (or playstation 3).
You can not play xbox games on a playstation 2
no
No, the Halo games are only made for Xbox/Xbox 360
No they do not work in a PS2
NO ... but PS2 games work on PS3 consoles ...
No. They're different consoles