Knock Rush is an exciting 3D shooting game that offers a wide variety of weapons to take down enemies and pass levels. With the unique feature of customizing your own weapons, the game provides an enjoyable experience with endless possibilities. Your goal is simple - use your chosen weapon to knock down the enemy and reach the end of the level. The game also allows you to design your own unique weapon, giving you the freedom to be creative. In this article, we will explore how to play Knock Rush, where to play it, and whether it is free online.