The Devil's Calculator vs Color Gallery

An evil calculator has its normal arithmetic operators replaced with sadistically obscure functions. Using logic and algebraic puzzle solving, you must work backwards to interpolate them and purge the calculator of its demons. Non-profit and open-source, The Devil's Calculator is a highly original indie game that's as addicting as it is educational. Accessible to numberphiles and math novices alike, the first 20+ levels are 100% free to play and enjoy along with several DLC levels, authored by famous mathematicians like Alex Bellos, Grant Sanderson, James Grime, Tony Padilla and James Tanton! The game was named a fan favorite of GDWC, and one of the top 10 indie games of 2019 by PAX. Each level has you decipher the function of a mysterious operator and use it to calculate the number of the beast to progress. Advanced graphing mechanics, countless features and simple, yet innovative level design provide considerable depth to the gameplay. Players unlock the ability to create their own levels and play challenges others have created - including free DLC levels crafted by the game's creators, educators and mathematicians. With hand drawn artwork and a charming story, the Devil's Calculator is a genuinely fun and gratifying puzzle experience. The game was celebrated at the MOVES conference by the National Museum of Mathematics in New York City. Cinq-Mars Media is a 501(c)(3) non-profit organization developing technology to support scientific research related to human safety and education, and to make such technology and research available on a charitable basis.

Sequel to our classic puzzle game Color Puzzle, Color Gallery provides you with whole new soothing experience and satisfaction. Now you can get not only simple gradient puzzles, but also gorgeous mosaic art paintings! In Color Gallery, every puzzle is a piece of art itself and also part of an elegant mosaic art painting. The game is easy to play, you just need to drag and rearrange colored polygon tiles in hue order. By solving color puzzles, you can challenge your logic and sense of color while enjoying the beautiful mosaic artworks. If you love classic hue puzzle games, then you must download and try out Color Gallery. Game Features * Easy to play: just drag and reorder the colored polygon tiles in hue order * Offline puzzle game: no need of wifi internet connection * Whole new game design: hue puzzles are now combined into mosaic art paintings * High quality puzzle game: simple interface and features, yet still addictive and satisfying * See if your perception of color is better than the world average record * Wallpaper-ready screens: download the finished puzzles and set them as your phone's wallpapers, or share them with your friends This free and offline beautiful color puzzle game now includes more than 100 puzzles (more levels are coming soon!). Different color schemes and difficulties challenge your color perception. You can play alone, or share your elegant and beautiful hue puzzles with your friends. Download now and enjoy the relaxing journey of becoming color master!