Halo: Combat Evolved serves it's purpose in being a highly-captivating first-person shooter title. It's creative concept of an advanced space military setup creates for a very fun and solid story campaign and cooperative basis, alongside the very polished armor look of Master Chief, the fun Cortana, and perfectly well-crafted setting of Halo, a giant ringworld that sucks the player into the land of this galactic ring. The very alien audio design is superb, from the different sounds utilized from each human and covenant weapon, the air of a banshee, and the vocals from the covenants make the world feel alive, and the epic dystopian music helps amp up the tension in each encounter. The gameplay also manages to keep variety to prevent repetition throughout the experience, from the warhog driving, banshee flying, and player-strategic gunplay, that if only offered, never gets boring. The controls are tight and each encounter feels just right for difficulty, allowing the player to really think out each attempt from weapon combinations, hits, grenades, and different types of enemies to keep things enticing. It's only semi-drawback is that the level design is progressive, but each seperate section of the campaign can be way too long and drags things out, even repeating the same layouts.