Metriod Prime was a good game, but I really hated that auto targeting. It really kind of took the challenge away. And it lacked weapons. only four weapons. you never ran out of ammo either. Thats where the DS version of Metriod fixed it. But then there was nothing to drive. it was just get to a certain point, beat boss, and get upgrade. When you see the same place over and over again it gets rather boring.
Meh... All Halo had was loads of weapons, tanks, banshees, warthogs, Wraiths, Spectres, ghosts, turrets, a decent story line, A cool looking starring charicter, actual attitudes, people, incredible graphics, wonderful enemy AI, multiplayer, Co-op play, online play, the fact that your not the only person fighting, sniper rifles, no bosses, and just enough levels to keep you occupied for years. Yea... Halo dosen't seem too great anymore...
Halo Release date: November 2001
Metrio Prime release date: November 2002