Giant Hunter 3D is a free-to-play game available on Android devices. Developed by TigerGame, the game is set in a world where giants have invaded the city, and it's up to the player to save humanity by killing them off.

The game's objective is to stack as many bullets as possible and use them to take down the giants. The game's controls are simple and easy to understand. All the player needs to do is swipe to aim and release to lock-on and shoot. The game's graphics are well-designed, and the sound effects are immersive, making the game a thrilling experience.

Overall, Giant Hunter 3D is an enjoyable game that will keep players engaged for hours. The game's simple controls and well-designed graphics make it easy to pick up and play. If you're looking for a fun and challenging monster hunting game, then Giant Hunter 3D is definitely worth checking out.