In the Only Up! game, there isn't a strictly fixed height limit. The height that players can reach varies in different maps and game modes. In the official PC version of Only Up!, players need to reach the top of the map to win the game, and the game's background involves climbing from the slums to space, which implies an extremely high altitude. Some specific situations are as follows:
In Fortnite "Only Up" maps: The "Only Up 2" map created by choupala has a height of 6,000 meters. In the "Only Up" map with the island code 4366 - 9611 - 6988, the top of the map is just beyond 3,700 meters.
In Egg Party's "Onlyup One Life Edition": The finish line is at 1,625 meters.
In the PC game RUSH: Only Up Multiplayer released on Steam: Players need to compete with others to reach the top in a race, and the height that can be reached is not clearly defined, but players need to constantly jump and parkour upwards to compete for the highest position.