3. Epitaph (Halo 3)
By far the most controversial choice on this list. I know most people love Guardian on Halo 3, but I think Epitaph is seriously underrated. The map is strangely designed and it has some spawning issues, but even with those problems, it's still one of my favourite maps in the series. You either love it or hate it. Weapons control this map but getting them is nearly a game in itself. The rocket launcher overhead is only accessible by a huge gravity lift and the shotgun is in an underground alcove. The shields acting as doors add to the mayhem as it is possible to escape by dropping down or jumping up a level. The map also features dozens of hidden areas and secret jumps. The center section is the main kill zone, but that doesn't seem to stop players from rushing in, which inevitably results in all out carnage. A personal favourite of mine.
Best Game Modes: Swat, Free For All