In Mini Robot Wars, the aim is to help the cute little alien robots defend their planet against an invading horde of evil machines, seeking to turn it into a space resort. The player must gather resources and build robots to act as defensive units and fight their enemies. The game features simple gameplay while retaining plenty of depth, with a large number of units, upgrades and unlockables and a variety of mini-games.
Mini Robot Wars has a unique gameplay mechanic; instead of the typical 'path system' adopted by most tower defense games, it uses a platform-like approach common in side-scrolling shooter games. The enemy’s movement is thus not defined by a path but rather by its type.