The Smile Entity, taunting Rose about how she will never be able to get rid of it. You can't escape your own mind, Rose. The Smile Entity is the main antagonist of the 2024 horror film Smile.
Subway Surfers, the popular endless running mobile game, does not have an official ending. The game's design is based on continuous running and avoiding obstacles, so there is no specific end point or final level.
They can also jump on top of the trains and surf with hoverboards to evade capture until the character crashes into an obstacle, gets caught by the inspector, or gets hit by a train, at which point the game ends.