is most commonly known as a sci-fi parkour platformer video game developed by Simbinn (under the DTM Games label) [Search Results]. It focuses on high-speed movement, precision jumping, and maintaining flow through abstract, neon-lit environments.
In a business or creative context, being "in momentum" refers to a state of where success builds upon itself.
While the term usually refers to the game, it can also relate to the broader physics concept of being (maintaining a state of motion). 1. The Video Game: inMomentum