This mod introduces several different grenades that all physically exist in world for the player to pick up and use.
Molotov cocktail - Starts burning and spreads fire to nearby burnable items for period of time
Smoke Grenade - Produces large plume of smoke to cover player movement
Frag Grenade - Individual frag creates small explosion after countdown
Cluster Grenade - Bundled explosives create one large explosion followed by multiple exploding submunitions
White Phosphorous - Bundled grenade holds a bursting charge that sends several small voxels that will burn uncontrollably for a period of time flying down over your target
Pick grenade up with right click, press "e" to arm, move yourself somewhere where the grenade is not.
Backup your castle.xml + castle folder and then place the contents of the zip folder in your teardown/create folder.