100 Doors: The Escape Challenge is a puzzle game available on the iPhone platform. Developed by JianGuo Zhou, this free game falls under the Games category.

In this room escape game, players are presented with 20 levels to challenge their logical thinking and problem-solving skills. The game features a minimalist style environment where various clues are hidden, waiting to be discovered. Despite the simplicity of the scenes, complex puzzles are cleverly concealed, requiring players to concentrate and find the pleasure of reasoning.

The game offers a simple and relaxing experience with unexpected puzzles to solve. Players will need to carefully examine the scenes and make bold speculations to progress. Unlocking new scenes is completely free, with each scene being unlocked by successfully decrypting the puzzles.

Please note that this version of 100 Doors: The Escape Challenge only includes 20 levels, with more levels promised in the next version.