If there are no two adjacent same color dots to connect, the dots are automatically scrambled so that the player can make a valid move, similar to other games. When a player connects a grouping of at least four same-colored dots to form a complete circuit, all of the dots in the game area with that same color will disappear, and any dot(s) fully inside the circuit will become 'bomb(s)' which will explode in all eight directions once those dots drop down. The connected dots are removed from the game area dots directly above those will then drop down until they hit other dots or the floor beneath. They can be connected horizontally or vertically, but never diagonally. The player must connect at least two dots of the same color in order to make a move. At the start of a level, a set of dots is 'dropped' from the top of the in-game area. As of October 28th, 2021 there are 3700 levels.ДЄt the start of each level, the objectives are displayed furthermore, the player must complete them within a specified number of moves.

The game now also features a weekly 'Treasure Hunt' mode, where players compete worldwide to be the first to complete a sequence of seven levels.ДЄ new world is added with each major game update, currently on a release schedule of roughly once every two weeks. As each world is completed, the player receives a postcard for that world. In the earliest levels of the game, objectives include sinking anchors and breaking ice the objective is to accomplish a target number of each, for example to sink a specified number of anchors. Worlds differ in gameplay elements, obstacles and objectives.

Levels are grouped into 'worlds', with the first ten levels assigned to one world, and after that every 25 levels grouped into a world. At the start of the game, only level one is unlocked each subsequent level is unlocked only when the previous level is beaten. Unlike Dots, Two Dots has power-ups, objectives and a campaign (series of levels), while lacking online multi-player capability.

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