Grenade-jumping (GJ) is a technique which demands more exacting timing, because the grenade-launcher's projectile ricochets after it is launched, and its detonation is delayed. Combining more than one grenade in order to make GJ is also possible but may require more players due to detonation delay. BFG-jumping is a technique kin to rocket-jumping, and only insofar different as the BFG has a higher rate of fire and makes more splash damage. Plasma-jumping, also called plasma-hopping, is a technique in which plasma gives slight boost to the jump.