Strategize! Block! Capture! Win!
The goal of Blockers! is to create connected groups of your own tiles on the board, while trying not to capture too many tiles of the same color. A group is any connected set of like-colored tiles on the board. Diagonal connections don't count. A tile that isn't next to any tiles of the same color also counts as a group. At the end of the game, you'll count the number of groups you have on the board, and the number of tiles you have of the color that you captured the most, and whoever has the fewest of these two things combined wins.