A relaxing puzzle game where you strategically place blocks to make all numbers on the board equal zero. Enjoy a no-pressure experience with calming audio and no in-app purchases or ads.




10+ similar games compared and reviewed
Whether you want more options like Riddlerr or a completely different take on the same concept, our curated list of 10+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.




A relaxing puzzle game where you strategically place blocks to make all numbers on the board equal zero. Enjoy a no-pressure experience with calming audio and no in-app purchases or ads.











Engage in daily brain training with over 100 unique math riddles and logic puzzles. Improve your logic, reasoning, memory, and focus with challenges suitable for all ages. Track your progress and boost your IQ with this addictive brain gym.


Engage in a relaxing cryptogram game to decode encrypted texts and reveal hidden messages. Solve puzzles using logic and pattern recognition to uncover fascinating quotes and sharpen your mind.


A logic puzzle game where you create the longest possible river paths using stone blocks. Enjoy a relaxing experience with nature and piano sounds as you test your IQ and complete challenging levels.






A unique puzzle game blending Sudoku and Nonogram mechanics. Players mark numbers on a grid to achieve correct row and column sums, using red to exclude numbers and green to include them. The goal is to make the external sum indicators turn green.


A relaxing puzzle game designed for quick play sessions. The objective is to strategically place buttons to achieve four in a row, with a unique color-flipping mechanic that adds a strategic challenge. Earn points and extend your playtime with each successful match.


Sharpen your mind with math-based logical puzzles. This app offers four distinct challenges to boost your reasoning skills and prepare for IQ tests. Customize the time for each puzzle and improve your cognitive abilities.