The famous game CS:GO (Counter-Strike: Global Offensive) features many types of knives with different skins. The melee attack depends on the type of knife
Plugin CSGO Grenade Trail allows dead players and spectators to see the trajectory along which living players throw grenades; the idea itself was taken from
Plugin Graffiti Plugin for CS 1.6 lets you draw various kinds of graffiti on the server , like in CS:GO, you might ask, but how is it different from regular