This is basically Halo for PSX and i didn't enjoy it.(I played the bigsur version) In the mac version there is no options and the mouse speed default it's so slow that the first time i saw the speed i was thinking that i would never be able to kill an enemy, i guess i was wrong because the AI is not good. The enemies barealy see you, they go after you them they stop and they never shot they shot but you have to stay still for a wile and they pass trow some solid objects like walls. The weapons are not bad, but there's one weapon that is straight up bad and its the Wisp Launcher, the weapon always locks on the closest enemy and have low ammo and low damage, you have to shot three times to kill ONE enemy, ammo for this weapon is low and you can only shot 6 times after reloading; I think if you removed the lock on and make it deal more damage the wepon would already be usefull. The character is slow like really slow, slower than 90 year old, and the world area is BIG and it's boring walk for minutes to get to a place and the slow walking its even worse when you die, because when you die you go back to the begning and have to do all that slow walking again. Now I will talk about good stuff because there are thing that i really liked in this game; i liked the graphics, for a PSX style game the graphics are very well done, i like the weapons desings, i like the aliens, i like the sounds and i like the creepy and mysterious ending. There are some small nitpicking things i will talk about now, why have to hold e instead of just pressing it, the gunplay is not good but i think that inproving the AI would make it better, the boxes on the alien structure that you enter don't have collision. If some one wants to see the issues i will record a video showing them.