There is no shortage of games available on Google Play, from addictive time wasters like Doodle Jump and the Angry Birds franchise, to perennial favs like Tetris and Hangman. But if you're looking for games that will challenge your IQ and keep you at the top of your game, check out these five Games for Brains:

100 Floors

This game presents you with a set of elevator doors. Your job is to figure out how to open them. Not so fast Columbo! You'll need to tap all of your gray matter and pay close attention to have any chance of clearing 100 floors of logical maddness! The key to solving each puzzle is to pay close attention to what is presented, and what is not! Deduction, induction, this game will keep you busy....and sharp.

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Unblock Me

As with most great games, the premise of Unblock Me is simple; get the red block off the board by moving the other blocks out of the way. But a word of caution: moving through these puzzles becomes increasingly like putting your brain through boot camp.... a fun boot camp.

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Words With Friends Free

Combine the classic game of Scrabble with the 21st Century and you have an approachable word game that is more than the sum of its parts. It's not just a matter of spelling a great word, it's putting the best letters on the best squares for the highest score! In addition to keeping your brain sharp, this is a great game for interacting with old friends and making new ones.

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Brain Teasers

Brain Teasers is a collection of logic puzzles, numeric and geometric challenges that will definately put a damn strain on the brain. But it will also help you to think in logical scenarios and clear your mind of extraneous information. Solving these puzzles will require genuine effort and if steam starts coming out of your ears you know you are on the right track.

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Brain Trainer Special

Brain Trainer is a huge collection of brain games, broken into a variety of modes, including math ninja, memory trainer (pictures), speedy shapes, 3D Cubes and more. This app is a one-stop repository for keeping your memory quick and sharp.

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Well there you go! The next time someone asks you what the inverse of a blue rectangle with a half dark moon star is, you'll know.