Ahoy.io is a free-to-play action game developed by MobQuests for Android devices. The game is set on the high seas, where players must upgrade their ships and compete against others in a battle royale. The objective is to stay alive while improving your ship's weapons and health and earning rewards.

As you progress through the game, you'll face increasingly difficult zones with tougher opponents. You can upgrade your ship's weapons and health using the rewards you earn, and climb up the leaderboards. If you're up for more of a challenge, you can move into a higher-risk zone with even greater rewards.

Overall, Ahoy.io is an entertaining game that combines battle royale gameplay with pirate-themed action on the high seas. The game is easy to pick up and play, and the upgrades and rewards provide a good incentive to keep playing and improving your ship.