Halo : Combat Evolved is nothing special...

[Severance]

Halo CE's campaign is very cliche , its just some bad dudes attacking  dudes while badass mastercheif is helping other dudes and this halo thingie is causing trouble.

Halo 2's campaign however is more interesting, it had more storyline since you play different characters

That said Halo shine in Multiplayer, you'd ignore all these "Flaws" if you are playing with someone, and i don't recommend the PC version it was crap.

also the "Corridor" maps are actually in a lot of the old school games, take Doom for example the whole game is a giant maze, but i'd still play it without getting bored (thanks to Mods that is   )