Sixam

Sixam is a location, featured in The Sims 3: Seasons and The Sims 4: Get to Work. The name of the lot is a reference to Maxis spelled backwards.

The Sims 3: Seasons
Sixam is mentioned in The Sims 3: Seasons, and functions as a Rabbit hole. Sims and Aliens can travel there by using the Galaxa Space Car with a Space Travel upgrade. They can sometimes return with unique rocks or items.

The Sims 4: Get To Work
Sixam is featured in The Sims 4: Get to Work as a secret lot. Sims can access it by constructing a Wormhole Generator whilst in the Scientist Career, by upgrading the Rocket Ship with a Wormhole Generator. Aliens, as well as alien plant life, may be found while exploring Sixam.

Sims can also collect rare objects. Two new crystals and metals can be found in Sixam, the former of which can derive a new Element, with three new forms of Plant life to grow in the Sim's Garden. There is a six-piece collection of Geodes which can be found, which gives Environment boosts, as well as alien plants to be harvested and grown back home.

Trivia

 * In The Sims 3: Pets, there is a large bird called "Spotted Sixam".
 * The stadium rabbit hole in Roaring Heights is called "Sixam Field".
 * Mobile phones do not function on Sixam.