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Masyu

Masyu is a visual logic puzzle that was invented in Japan by Maki Kaji. Easy to learn, the rules of Masyu reveal challenge and beauty.

Available in the Apple iPhone App Store, Masyu is a collection of 60 Masyu puzzles for beginners to masters of all ages. Are you ready to master Masyu? more...

Masyu Bug

For Masyu fans, here is a second collection of puzzles aimed at younger and more casual puzzlers. Masyu Bug features the same interface as its predecessor, Masyu, and allows puzzlers to save and restore their progress online at the TootSweet web site. Masyu Bug is available now in the Apple iPhone App Store.

Monster Masyu

Ready for a challenge? Try this collection of master-level Masyu puzzles. Like other TootSweet Masyu collections, it features the same smooth interface and allows puzzle progress to be saved online. Monster Masyu is available now in the Apple iPhone App Store.

Obama!

For a literary twist on Masyu, try this collection of puzzles that mix logic and politics. All the rules of Masyu apply, but the solutions also reveal quotes of America's 44th president, Barack Obama. Obama! is available now in the Apple iPhone App Store.

Lincoln!

Want more presidential puzzles? Try Lincoln!, our second collection of Masyu puzzles with hidden messages. Lincoln! is available now in the Apple iPhone App Store.

My IP

We needed this, and it seemed that others might too, so this little utility is now free in the app store. Use it to look up your local IP address. What you do with that is up to you! My IP! is available now in the Apple iPhone App Store.