Master of Fortresses 3 has not yet been developed, why not play one of our other games below:
Kingdom Rush Frontiers
Pokemon Tower Defense
Cursed Treasure 2
Kingdom Rush
Gemcraft 4 Chasing Shadows
Cursed Treasure
Cursed Treasure Level Pack
Gemcraft Chapter One
Gemcraft 2 Chapter Zero
Gemcraft 3 Labyrinth
Incursion
Incursion 2
Pokemon Tower Defense 2
Elona Shooter
Necronator
Demonrift TD
Castaway Island TD
Demonic Flower
Hands of War TD
Hex Empire
Castle Wars 2
Giants and Dwarves Tower Defense
Master of Fortresses
Steampunk Tower Defense
Nano Kingdoms
Castle Wars
Kingdoms At War
Nano Kingdoms 2
The Tower