Renewable energy crash course and oil manufacturing from ocean algae.Fractals mathematical simulations of trees and living cells.Mathematical crash courses for engineers and economists.Far more applications and curiosities to come.Our jigsaw puzzles, sudoku or crosswords are not printable.Taylored for the iPad, isBooth applications adapt to all modern devices, including smartphones, Android tablets, Windows and Mac platforms, Xbox and Playstation.All isBooth applications are free: you can purchase additional content at wish for an extended game experience.Progressively, our applications will run offline.We use HTML5 and CSS3 technology to supply free web applications, not dependent on platforms stores.HTML5 technolgy : play freely on the web.Rediscover the pleasure and fun of a simple and traditional minesweeper.Solve the best Sudoku from easy to evil levels.Jigsaw puzzles : learn geography, rebuild your own pictures, train the mind of your kids.Solve easy crosswords puzzles or proove your expertise with cryptic and mute crosswords grids.Solve the best crosswords in several languages.The best collection of free games and applications to play jigsaw puzzles and crosswords online.Solve a collection of fun, curious and educational games.Back isBooth: simple intellectual pleasures