To craft and build a series of complex traps to stop enemies from advancing is the central concept of a popular online game. Players use a variety of materials and mechanisms to create intricate contraptions that will activate in response to the movement and actions of incoming threats. The goal is to successfully block or deter the enemies from reaching a set goal, with increased difficulty and speed coming from various sources.
The game can be played directly in the browser without the need for any downloads or registration. The lack of complexity, while deceiving, works with the gameplay to create a challenging experience where one wrong move can lead to complete failure.