Using challenges, 2-4 players can compete against each other on a chosen map for a limited amount of time.
Pick the players, the map, and the duration of the challenge. The current competition map cannot be chosen.
The site will log the best run time by each player coming from the servers for the duration of the challenge and keep track of their personal best.
If the run is also a general personal best, it will also be logged on the normal leaderboards.