
Multiplayer features different game types (deathmatch, forts, and races), with leaderboards for each. Players can compete against the single-player A.I., or against each other online or off. The team that loses all its worms loses the match. Each individual worm on the team has their own health meter, and will die when it reaches zero or they are knocked off the terrain and into the water. Most weapons have a limited number of uses per map. Explosive weapons (airstrikes, bombs) blow holes in the terrain and drop any nearby worms into the new craters. Thrown weapons (grenades, bazookas) are aimed by the player and affected by ever-changing wind. Direct fire weapons (shotguns, Uzis) are used by the worm that selected it against whatever's nearby. Players take turns controlling one worm at a time, and can either position the worm until time runs out, or use one weapon from a selectable menu. Players control a team of armed worms fighting atop a 2-D randomized battlefield.

40 weapons are available, including returning favorites (the sheep variants and the Holy Hand Grenade), and some new additions (a Bunker Buster and the Buffalo of Lies).

A sequel to the 2007 downloadable version of Worms, (and not a combination of the previous games Worms 2 and Worms: Armageddon as the title might imply), Worms 2: Armageddon adds a new 30-mission campaign, three tutorials, and five secret missions.
