ThornSin, Excape From Zombie U, Witch Hotel 4, Alien Quest Eve, Hailey's Treasure Adventure are quite similar. If you like pixelart I also recommend Survive! and Tentacles Invasion.
Here are some of my recommendations for side scroll fighter/defeat sex:
Pure Onyx Ghost Hunter Vena Zetria Captivity Future Fragments Escape Dungeon 1/2/3 Udonge in Interspecies Cave ThornSin Alien Quest Eve Night of Revenge Parasite in city Castle of temptation
