Mobile puzzle hit Threes is now available to play in-browser – officially, this time.

Accessible at play.threesgame.com, the browser version is a stripped-back version of the game, which uses the arrow keys to move.

Threes was released in 2014 for iOS and Android, and its fast maths-based gameplay quickly made it an addictive hit.

Gameplay involves combining cards on a 4x4 grid to form ever-greater multiples of three.

It spawned multiple somewhat shameless clones, including 1024 and its own clone 2048.

Threes is available as a paid app on iOS, Android, Windows Phone, and Xbox One, with a limited free-to-play version also available on mobile.