Merge Monsters 3D is a free strategy game developed by HexagonalGames for Android devices. The game allows players to control monsters and merge them on the battlefield to upgrade their power and fight against enemies.

The gameplay is simple yet challenging, with players needing to merge their monsters strategically to defeat their opponents. The game features a variety of monsters to unlock, each with their own unique abilities and strengths. As players progress through the game and conquer challenges, they unlock new and more powerful creatures to use in battle.

Overall, Merge Monsters 3D is an engaging and addictive strategy game that will keep players entertained for hours. With its easy-to-learn gameplay and challenging levels, it is a must-try for fans of the strategy genre.