Fillshape is a puzzle game in which you have to create shapes by filling in the squares. The first thing you need to do is to move the cursor over the space you want to fill. When you are on the right space, you can either change its color or add a stroke. The color you choose for a space determines the color of the whole row.

You have to complete a number of quests and mini-games to advance to the next season. You can find out more information about each quest and mini-game in the game description.

You can see your progress on the world ranking. There are weekly tournaments and quick games.