[Android] Return to Planet X $2.79 (was $10.99) @ Google Play

Seems like a bargain. Note the 3.9 rating though.

Description below:

Full game. No In-app purchases.

Return to Planet X is a close combat singleplayer first-person shooter in which you will have to smash tons of alien bugs and shoot your way through the secret military base located on a distant planet.

Key Features:
- Laser guns, grenades, explosives, machine gun and flamethrower
- Alien bugs
- Intuitive controls
- Explore a world cloaked in mystery and danger
- Stunning environments with high-quality graphics
- Spectacular ragdoll effects.
- Full gamepad support.