Description: The Rio Doce (Sweet River) was a paradise for mankind and animals, but now it has become a territory destroyed by the unscrupulous activities of Dr. Wellin. This is Pacal's first destination, ascending the Rio Doce preventing its complete destruction. Mud River is a 2D arcade game in horizontal Shoot'em Up style, single player, in which the player controls a spaceship with the objective of destroying enemies. With two main weapons with infinite ammo and three secondary weapons that can be used according to the amount of power spheres the player can collect. The game has three levels with challenges and achievements to unlock.