Tetr.io is a modern yet familiar online stacker developed by osk. Play against friends and foes all over the world, or claim a spot on the leaderboards - the stacker future is yours!
GUIDES
FAQ
Stuck and need some help? Check out some of the questions the community have asked relating to this game. If none of these answer your problem or you want to get some tips when it comes to a particular level, feel free to submit a question of your own.