Welcome to alien infested planet! In campaign mode, missions range from offense to defense missions upon which you can build a base to stop the alien horde. Or there is a survival mode with 6 maps, where you destroy wave after wave of incoming aliens.
Mine and scrounge for resources as you traverse terrestrial aquatic and aerial alien planets. Research and craft upgrades to delve deeper and unlock all of the logs, and continue on the journey of Glean.