Planet27 tells about the distant future. The year is 3047. All power on Earth has long belonged to giant corporations, seeking only to further increase their wealth. When their activities eventually led to the complete depletion of resources on the planet, the concerts began to explore space and began to look for other worlds to colonize. They were lucky enough to find a celestial body rich in mineral deposits and several moons. Having not encountered intelligent life, huge companies began to establish a mining process to produce a universal type of energy. And the local insect-like inhabitants did not like this very much.

Planet 27 is a real-time strategy game with tower defense elements. In it, users are allowed to fight only on the side of people. There is a campaign divided into levels. As you progress through it, new units, buildings and improvements for them are unlocked. To win each stage, you need to get all the crystals on the map within the timer. The destruction of crystalline rock attracts the attention of large insects. Therefore, here you constantly need to fight off hordes of enemies with the help of defensive towers or mobile combat units. The extracted substance is spent on the construction of various buildings and the production of soldiers (mainly various types of infantrymen in spacesuits and exoskeletons). At the end of the mission, all leftovers can be spent on upgrading your army.