Mission Mermaiden Hasumi And The Deep Sea Sist Updated «EXCLUSIVE»

Known for its challenging, pixel-art style platforming and high-difficulty enemy encounters. Recent Updates & Technical Changes (2025–2026)

is a popular 2D side-scrolling action platformer. Developed by indie creator Hakkaku , the game combines fast-paced sci-fi combat with adult elements (eroge).

: Players control Hasumi, an elite operative sent on a high-stakes reconnaissance mission into the treacherous, overgrown Kalimantan Jungle.

While the base game was released years ago, it continues to see interest through fan-made modifications and technical updates: mission mermaiden hasumi and the deep sea sist updated

Here is everything you need to know (updated) about and the Deep Sea Sist .

Despite its niche classification, Mission Mermaiden was initially praised for its surprisingly high-quality gameplay.

: Hasumi uses both ranged firearms and close-quarters melee attacks to clear out waves of automated defense bots and organic alien mutations. Known for its challenging, pixel-art style platforming and

: High corruption levels make the game significantly harder by capping your recovery options. Check for Mods

The game operates primarily as a 2D side-scrolling action-platformer. Key mechanics include:

Mission Mermaiden Hasumi and the Deep Sea Sisters (Japanese: ミッションマーメイデン-ハスミと深海の姉妹- ) is an action (ACT) game developed by the Japanese circle and illustrated by Dama Neko (弹丸猫) . It was released on July 27, 2020 , as the circle's third work and is known for its distinctive side-scrolling action, anime-style presentation, and sci-fi bio-horror setting. : Players control Hasumi, an elite operative sent

Dive back in. The deep sea has never been so dangerous—or so beautiful.

Akari: The guardian. If you prefer combat, Akari is your choice. She wields heavy volcanic glass weapons and has a high defense. The update gave her a "Shield Bash" that can stun even the largest Great White bosses.

The core of the experience involves side-scrolling platforming and combat against a variety of enemies.

The fighting heroine who must battle against overwhelming odds to complete her mission.