Is Sumo free to play?

Yes. Sumo runs in a browser at no cost, with nothing to install and no purchase to make.

How often does Sumo reset?

Once a day. Everybody gets the same puzzle, and a new one replaces it when the game's day rolls over.

On mindloftdaily.com, and you can play it inside this page without leaving Alldle.

It sits in Logic & Math, alongside the other daily games of that kind in the catalogue.

Logic & Math New

Solve a daily greater-than Sudoku where inequality signs show which adjacent square is bigger.

Sumo

Logic & Math

Is Sumo free to play?: Yes. Sumo runs in a browser at no cost, with nothing to install and no purchase to make.
How often does Sumo reset?: Once a day. Everybody gets the same puzzle, and a new one replaces it when the game's day rolls over.
What languages does Sumo support?: English.
Where does Sumo run?: On mindloftdaily.com, and you can play it inside this page without leaving Alldle.
What kind of game is Sumo?: It sits in Logic & Math, alongside the other daily games of that kind in the catalogue.

If you play Sumo, the closest things to it in the catalogue are Alibi, Read the Room and Trivia Gauntlet. They sit in the same logic & math category. Alibi is from the same universe, Mind Loft. See the full list of alternatives.