About Block 21 — Gameplay & Story
A mathematical puzzle awaits you in Block 21, where logic and strategy will help you achieve your cherished goal. On the playing field there are multi-colored tiles with numbers that must be combined to increase the denomination. Look for groups of three or more tiles with the same values next to each other. When pressed, they merge into one block, the number on which increases by one. Your task is to reach the final number twenty-one through successive merges. The process requires thoughtful planning of each move so as not to fill the field ahead of time. Become a number master and conquer the top in the Block 21 brain challenge.
Platform
Browser Desktop, Mobile and Tablet
Release
05 february 2026
Last Update
05 february 2026