Castle Cat 4

Castle Cat 4 is originally a flash game by Mausland Entertainment and is the sequel of Castle Cat 3: The Vegas Connection. In this episode, Castle Cat is in a German countryside to save a princess captured by the Dungeon Dog, destroying enemies on the way.

In M.U.G.E.N, a bonus game from the flash game has been made by Dark Ruler. Instead of Castle Cat, the player can use characters from their roster. The enemies do little damage, and as the player can progress without too much trouble just by using Normal Attacks, Hypers are not required. The character can collect beers and hearts on the way to recover Life and Power.

However, this bonus game has some minor problems, such as some non-cohesive elements in the background like cut mountains and landscape, black lines on the landscape, pink pixels and a "floating" tree. The electrical discharge's sound effect continues to play for a small while after the robot gets destroyed, the smoke of the Copter's missile stays displayed even after the Copter is destroyed, the Copter's blue flame disappears when it is on the left edge of the screen, and enemies/items reappear suddenly when the character traverses backwards to earlier parts of the level.