Halo 3 Grenades

Firebomb - The Type 3 AP/AM grenade is a Brute device that breaks when thrown, releasing a flaming gel that sticks to hard surfaces. The gel burns for around four seconds and can be used as a barrier or to kill players directly.

Frag Grenade - Frag grenades have seen a drastic power nerf to make it fit more into the balance of the game. It can be devastating to infantry if used correctly. A well timed frag can also tip a Warthog.

Plasma Grenade - A Grenade of Covenant origin. That sticks to enemies and vehicles. It has seen a slight adjustment in general, like the Frag Grenade. But still can be devastating if used correctly.

Spike Grenade - The Spike Grenade, a Brute technology, is one of the two new grenade types introduced in Halo 3. Spike grenades can be stuck to nearly any surface, including players, and spray shrapnel in one direction when they explode. Like a Plasma Grenade, sticking an opponent with a spike grenade is fatal.