Halo CE. Why the hell is the pistol the most powerful weapon in the game lol, apart from heavy weapons of course, but i mean, you start with the pistol and you can kick so much ass with it. It also bloody scopes quite far.
Also another game that coems to mnid is company of heroes, and while i love that game i dislike the fact that all you really need is tanks. Now while that is also realistic in a sense, there just wasn't much point in infantry vs infantry fighting. If you brought in infantry you would just get demolished by an amoured car.
And, While it's nowhere near one of my favourite games, i did play it a quite a bit, and i just have to say it. Modern warfare 2 and commando pro. What...the...shit.