“Generates an electric pulse that will both damage Zeds and may also stun them for a brief time. If you want more detail - on detonation, it generates a nanosecond electro-magnetic pulse that will disrupt electrical systems within a short range. Particularly those within the Zeds. Handy, that.” —Item description
The EMP grenade is the Berserker variant; it deals minor area damage, and stuns specimens in the area.
“A very simple high-explosive grenade. Hurts Zeds and humans alike. It really doesn't get any simpler. HE - High Explosive - it goes BOOM and blows things up. Do we really have to explain it to you?” —Item description
The HE grenade is the Commando variant.
1/2 Stick of Dynamite
“Just a small piece of dynamite, with a fuse attached. It can also hurt you, so be careful with it!” —Item description
The 1/2 Stick of Dynamite is the Demolitionist variant.
“Very simply, a flame grenade that will burn Zeds. Be aware that it can also hurt you! Named, insultingly, by the Finns during the 1929-40 Winter War, after Vyacheslav Mikhailovich Molotov, the Soviet Foreign Minister under Stalin... Sorry, did you not want a history lesson?” —Unused item description
The molotov cocktail is the Firebug variant. It deals fire damage and leaves a patch of flames for five seconds that ignite anyone who walks across it.
“Simply a canister full of old nails, with a small explosive charge in the middle. Not the most pleasant or subtle way of dealing with Zeds, but there is nothing pleasant or subtle about Zeds, is there?” —Item description
The Nail Bomb is the Gunslinger variant. It explodes sending nails as shrapnel.
“Releases a gas that will poison Zeds, but will also heal people. Stand in the blue gas cloud to be healed. To quote one of our scientists: 'The agent released from these grenades will revivify Homo Sapiens, while euthanizing Homo Zedicus.' We hope that helps.” —Item description
The medic grenade is the variant used by the Field medic. The effect creates a blue glowing mist that heals players and causes a mildly persistent poison to specimens.
“An advanced canister of liquid nitrogen. Enough contact with the contents of this will freeze zeds in place for a time. The results can be very shattering.” —item description
The freeze grenade is the Sharpshooter grenade variant. It freezes zeds for a short duration allowing players to easy line up head shots for its duration.
“The classic frag grenade: throws nasty little bits of metal around, hurting everything. I am quite sure you all played enough video games before the Outbreak, so you know perfectly well what a frag grenade is. And stop pretending that you didn't. No-one in here is going to believe you.” —Item description
The frag grenade is the Support variant.
The flashbang is the SWAT variant.