A single-player logic puzzle game played on concentric rings. Place numbers so each radial line adds up to the same target, using pure logic to find the single solution. Offers multiple board modes and difficulties, with a daily puzzle feature.





9+ similar games compared and reviewed
Whether you want more options like Coloring Challenge or a completely different take on the same concept, our curated list of 9+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.





A single-player logic puzzle game played on concentric rings. Place numbers so each radial line adds up to the same target, using pure logic to find the single solution. Offers multiple board modes and difficulties, with a daily puzzle feature.









Fuse atoms in a 2048-style puzzle game to discover elements and compounds. Progress through campaign levels, complete daily quests, and unlock power-ups. Become an alchemist and complete the periodic table.