Here the player can create choke-points to try and prevent its spread. The game's landscapes have different elevations the Creeper can quickly spread across low-lying areas but must gather before rising to higher ground, like a liquid. If more energy is consumed than gained, weapons won't be able to be recharged as quickly. Additionally, the player must monitor energy production and consumption. Should a Collector become isolated by the Creeper it becomes inactive and must be joined to the rest of the network in order to continue providing energy. These Collectors require space in order to harvest energy and must be connected to the city's network. In order to power their weapons, energy must be gathered by Collectors, which are placed by the player. Units to attack the Creeper are created in Odin City.
The main goal of the game is to connect the player's base to energy totems through the use of energy collectors and relays doing so opens a jump gate which allows Odin City to teleport to a new planet and attempt to escape the Creeper again. This is done by placing towers onto the battlefield which shoot at the Creeper. The player must hold back a purple mass called the "Creeper", which has already destroyed most of humanity and is now attacking Odin City, humanity's last bastion. Creeper World is a mix of real-time strategy and tower defense, where there is only one enemy and it can only be repelled rather than destroyed.