JoyJoy (4/5 stars, guidance suggested, currently priced at $1.99) is the fantastically satisfying twin-stick shooter from Radiangames, creators of Inferno+, Ballistic SE, Super Crossfire, and more. From Amazon:
* Blast your way through 24 unique waves and 6 intense challenges.
* Upgrade 6 varied weapons, along with your ships’ speed, armor, and special attack.
* Choose one of 5 difficulty levels, with 2 bonus difficulty levels (Lightning and Armored) providing new ways to play the game.
* Track your progress with achievements and leaderboards.
* Use the smooth, customizable virtual controls or a Bluetooth-enabled control pad to play.
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