ROBOT-SB -- Retro One-Bit One-Tap Space Battle

Changes 0.1.5 : If you like this game please rate/review, thanks!!

APK Description:

RETRO-SB is an endless scrolling retro arcade pixel-style space battle shoot 'em up (SHMUP). BUt it's not your typical vertical shooter - it's as much about dodging enemies and avoiding obstacles as much as shooting the aliens. Good for both a quick casual pick-up game or for long endurance bullet hell shooting sessions.

* Endless vertical scrolling retro arcade shoot 'em up.
* Simple one-tap controls, five alternate control schemes available.
* Many upgrades to increase your ship's firepower.
* Endless difficulty progression.
* Challenging boss battles.
* Achievements and leaderboard.
* Vibrant 1-bit color pixel graphics throughout! ;)
* Works well on both phones and tablets of any size.

Screenshots: