Shikaku, also known as Rectangles, is an engaging online logic puzzle game designed to challenge and entertain enthusiasts of all ages. The fundamental concept is simple yet captivating: players must strategically divide a grid into rectangular and square pieces, with each piece containing exactly one number that corresponds to its area. With a range of grid sizes available—from 5x5 to 25x25—Shikaku accommodates both newcomers and seasoned players alike.

The game offers special variations such as Daily, Weekly, and Monthly challenges, ensuring a fresh experience with each session. Players can enjoy tools like a video tutorial for guidance and various gameplay options like night mode and error highlighting to enhance their experience. Beyond Shikaku, the platform features a vast array of additional logic puzzles, including Binairo, Minesweeper, and Sudoku. Accessible on its website, Shikaku invites puzzle lovers to sharpen their logic skills while enjoying an immersive and visually appealing interface.