i think its Halo for the ps2. (or as close as it will get)
its quite fun, very combat orientated, although the sticks are pretty annoying for aiming, but your target reticle is quite large. some very entertaining Boss battles, that require you, for the most part, to use your transforming ability.
when it comes to the gfx you will be amazed how big the envoirments are and how good they look.
if it had a 2-player co-op option it would be one of the most loved games this gen, but it doesnt and its not.