Top Definition
the game before halo, the game that would describe why Masterchief is in the position he is in halo and/or what happened to all other spartans and/or why and how the war against the covenant started.

unknown if it will ever exist.
Dude if prehalo ever comes out then i will soooo have a nerdgasm.
by chance k. September 29, 2007
6 Words related to prehalo

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