Mission Mermaiden - The Downfall of Hasumi

About the Original

In Mission Mermaiden , Hasumi is sent on a secret mission in the year 2101 to investigate the appearance of strange life forms. In this platformer, the heroine must confront enemies in battle to thwart the plans of the Deep See Sisters. Her opponents try to manipulate the body and mind to their advantage with hypnosis, experimental substances and technical devices. 

About the Modification

Once again Hasumi tries to fight the deep sea sisters, but will she emerge victorious this time as well? Her opponents seem to be more cunning and are determined to corrupt Hasumi. This time it will not be so easy to resist the temptations of her adversaries.

In essence, the mod improves the original with:

1. Challenging teractions - The enemies represent a real challenge and statuses have a noticeable consequences.
2. Gameplay feedback - The players decisions have an impact with rewards and penalties.
   
3. Visible content - Good content that was rarely seen is now more visible.
   

Overview of changes

Gameplay: Movement and camera have been modernized to allow for good platforming gameplay.  Overall, the battle system has been simplified to encourage exciting fights. The Health system has been replaced with a Willpower system, so that together with the Pleasure and Corruption meter, an interesting resource management is created. The escape system has been completely reworked to present the player with tricky decisions.

Enemies: All 12 enemies and six boss fights have been reworked so that each enemy is a real threat. For this, the enemies' AI, movement patterns, attack and defense abilities have been improved. 

Bad states: The 15 already existing states have been completely reworked and expanded by two more. The origin and effect of the conditions are better understood and much harder to undo, so they have a noticeable and lasting impact on the gameplay.

Items and equipment: In the course of the game, these items become more and more important. Resource management plays a major role, since the equipment has a strong influence on the gameplay.

Misc: Bad endings revised, HUD adjusted, bugs fixed and much more...

Installation

1. Get the vanilla Game here
2. Make sure to make a backup copy of the game and check if it is version 1.1.5 (readme)
   
3. Download the modded files
4. Replace [MainFolder]\MissionMermaiden_Data\Managed\Assembly-CSharp.dll
5. Replace all 4 asset files in [MainFolder]\MissionMermaiden_Data
6. Start the game exe

I recommend translating the game with the AutoTranslator tool, since most of the texts are in Japanese. You will find an instruction pdf attached in the downloaded files that discribes the translation process in detail.

Fetish list

Hypnosis, Mind Control, Bondage, Tentacles, Monsters, Milking, Corruption, Yuri, Egg laying

FAQ

• Should I play the mod without having played the original?
  • Yes, I have made sure that the necessary tutorials are understandable for beginners.
• Is there new content?
  • There are no new levels or enemies, but the core gameplay has been completely reworked, creating a different experience. Furthermore, the AI of the enemies, the equipment, the statuses, the bosses, the bad endings and much more has been improved.
• Is there a Gallery mode?
  • There is a gallery mode in the original game, but has been cut from the mod due to technical limitations. Make sure to have a backup to watch the gallery in the unmodded version of the game.
• Are the saves files compatible?
  • Save files of the mod are compatible to the original game but not the other way around. You have to start a new game in the modded version.
• Do I need the translator?
  • The mod is fully functional without the translation tool. However, then most of the texts are in Japanese.
• The title screen is messed up and the game crashes after selecting New Game
  • Make sure you have applied the mod to version 1.1.5 of the game
• Why should I pay something?
  • You don't need to pay anything. The creation of the mod was very laborious and if you liked my work I would be happy about a voluntary donation.
• Why are you making money from other people's work?
  • The shared files are useless without having bought the original game. I want to support and promote the work of the developers. Furthermore, my approach is in agreement with the developers.
• What are your plans for the future?
  • I would like to work on a standalone translation and randomizer. I will also update the project with bug fixes.