The Boom Rocket is an item that launches skyward like a rocket and after sometime falling back down and causing a massive explosion when they land. The Boom Rocket's delayed attack makes it tricky to use but effective in places foes are most likely to gather.
The Boom Rocket's explosions are really big and powerful. There are lots of great spots to place a Boom Rocket in multiplayer. The inside area of Forgotten City is a great place to place Boom Rockets as the explosion can hit almost everyone there.