Tick

A "tick" is a unit of time in Screeps. Each tick corresponds to one full game loop for all active players.

On the official world, a new tick begins as soon as the last one has finished processing. This means that a tick is not a definite unit of time; they average about 3-4 seconds each, but sometimes take longer. Almost all time in the game is measured in ticks rather than real time; exceptions include novice zones and the leaderboards.

The current tick number can be accessed through Game.time. Tick time statistics for the official world are available on the status page.

See also:

• Understanding game loop, time and ticks - Official Documentation