Warning: this page contains major spoilers!
- The Alien Base is a story mission in XCOM: Enemy Unknown (2012). There are two variants, AlienBase01 and AlienBase02. The base layout is linear in nature.
- Starting location - near some Alien stasis tanks.
- Notable Locations
- Aliens Encountered
- The set of aliens in the Base will change based on which month the player chooses to assault the base. When attacking early, the base is populated mostly with Sectoids. When attacking late the base is populated with Mutons and Chryssalids. Regardless of when the base is assaulted, the final room will always contain a Sectoid Commander. It is common for this to be the first encounter with Psionic enemies during a playthrough.