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This type of grenade explodes and releases a liquid around it for a certain amount of radius. This liquid would make a person running over it or walking over it, tripping and falling to the ground. If they were running, it would take longer for them to get up while it would be slightly faster if they were walking. In order to not slip, you would have to keep jumping. I can already see how this type of grenade can change the multiplayer. :)