Galleria is a community-created map added in the Smissmas 2023 update. It is set in the Teufort Galleria, a shopping center located in the town of Teufort with music playing in the background. The center of the building is a circular court with a slippery ice-skating rink around a very large Christmas tree. But careful inspection reveals that the tree is in fact a missile disguised with hastily welded-on corrugated metal branches and a fuel line wrapped around it like a garland.

The objective of the map sees players collecting "presents" (cans of fuel) and delivering them to the "tree" under the pretext of a "Secret Santa" gift exchange. Whenever the delivery zone is closed, an ice resurfacer circles around the rink, killing any player it hits with either its front or the side extensions of the ice conditioner on the rear. When either team wins the round, the rocket launches through the circular center of the glass-domed roof, stripping off lethal sheet metal "branches" to fall on any players below. The Rocket Pit contains the launch exhaust, but walking into it results in a Pitfall death.

This map also features its own announcer: Sheila (played by Chandler "OctoBlitz" Dunaway), a bored voice coming over the intercom.