Halo consists of an intense, story-driven single-player campaign and a multiplayer mode. The campaign is a good 12 hours long at the normal difficulty setting, and the dynamic nature of the battles, along with the multiple, well-balanced difficulty settings, gives it good replay value.

            The multiplayer component only supports up to 16 players and includes a bare-bones integrated server finder. The game tends to play smoothly online if you can find a server with a low enough ping, and it features an assortment of different modes, which are variations on the standard modes of play found in your typical multiplayer shooter: They include slayer (meaning, deathmatch), team slayer, capture the flag, king of the hill, and some others, though slayer and CTF are by far the most popular choices judging from the servers that are up and running.