Ammunition in Diep.io are the weapons that can be created or controlled by the player to attack other players, or AI controlled enemies. Players cannot gain experience by destroying ammunition, but it will damage your tank when getting contact with one.
Ammunition includes bullets, drones, traps, minions, and, protectors. While protectors are controlled by AI in Team Death Match games, they are included here because they are player controlled in Mothership games, and because they don't grant the player experience when destroyed.
Objects that cannot be controlled by players are not included in this list, and are listed under polygons.