In this space themed game, catch letters falling through space to spell over 100 words.  Difficulty increases with higher levels.   Earn space coins by successfully completing rounds.  
Save up coins for a new spaceship, character upgrade, or to unlock shape puzzle games.  Buy a freeze potion from the store to slow down letter movement and make letters easier to catch.
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No advertisement and no in app purchases.
This game was developed by a mom who wanted to make sure her child had educational options when playing online.  
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Other apps by this developer:
 
Math Town 
Math Tower Defense
Protect TD (Tower Defense)
Spy Town
Spanish Prof
Eagle Mandarin
Mandarin Prof
ARAir
J-Trainer
Escape the Teleportation Maze
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I hope you enjoy this app.  Feel free to send me feedback if you have suggestions for future updates.