This game cointains at least one sexual scene involving wormhole sex.

Quick version: wormohole sex is a sexual act where penetration is achieved while being inside a portal or through a portal.

Long version: "wormhole sex" can be divided in two subcategory:
1) The body of a person is phisically in more than one place (dimension also) due to a portal or wormhole while having sex with another one. This is usually depicted as the person being penetrated is phisically cut in half (or more parts) by a wormhole. In this version the portal achieve a function similar to the one the wall achieve in the "Stuck in Wall Sex" trait.

NSFW Example 1

2) The key point about the second version of "wormohole sex" is the fact that two or more people can engage in a sexual act even though they are far away one from the other through a wormhole or magical portal device. Some example are magical mirror, handheld device, ecc..

NSFW Example 2