Mission Mermaiden - Hasumi And The Deep Sea Sis... Apr 2026

Are you more interested in the of the original version, or Mission Mermaiden - The Downfall of Hasumi by NoGag

While primarily an action game, it leans heavily into a sci-fi setting with a focus on resource management and environmental hazards. Mission Mermaiden - Hasumi and the Deep Sea Sis...

Players navigate alien-infested environments, engaging in combat with approximately 12 distinct enemy types and six unique boss fights. Are you more interested in the of the

A popular modification titled by creator NoGag significantly overhauls the base experience. This mod, available on platforms like Itch.io , replaces the standard health system with a Willpower system . It introduces meters for "Pleasure" and "Corruption," turning the game into a more complex survival-style experience where the enemies focus on manipulating the protagonist's mental state through hypnosis and experimental devices. Summary of Key Features Protagonist Hasumi, a special operative Antagonists The Deep Sea Sisters and their alien minions Setting Karimantan Jungle, Year 2101 AD Platform PC (often found on doujin or indie game sites) Developer Hakkaku (Hat caku) This mod, available on platforms like Itch

is a 2D side-scrolling action platformer that blends sci-fi exploration with retro-inspired visuals . Set in the year 2101 AD, the game follows a "badass heroine" named Hasumi who is dispatched to the Karimantan Jungle on a distant planet. Her mission is to investigate rumors of a biological weapon and confront the "Deep Sea Sisters," a group of android-like adversaries attempting to thwart her progress using a variety of mental and physical traps. Gameplay and Visual Style