Yes there are actual Terminator 2 games, most of them (arcade gun game excepted) garbage. This, sadly, is not one of them. Instead, it makes use of mods to turn Grand Theft Auto: San Andreas into...machinima? Art? Either way, it's one long love letter to James Cameron's 1991 classic.
I have played Tribes: Ascend. If that statement doesn't make you jealous, provoke salivating, or awaken tense memories of last-minute flag captures that you can physically feel in your shoulders and mousing hand, this probably isn't going to be the article for you.