Mart and Tetra

Mart and Tetra Mart and Tetra is a casual RPG where you team up with ex-Demon King Mart inside one body. Control two characters with different skills, battle enemies, and unlock defeat cutscenes with multiple endings.

Mart and Tetra

Mart and Tetra is a role-playing game where you share one body with the former Demon King, Mart. Together, you set out to bring down the current Demon King. During battles, you’ll control two characters and fight through a wide variety of enemies and monsters.

Each character brings a different set of skills, so you’ll need to use the right abilities at the right time to handle different foes and earn satisfying rewards.

As you progress, defeating enemies can trigger a related defeat cutscene. These scenes unlock a range of exciting and sensual moments along with special animations.

Casual RPG fans won’t want to miss this one.

Story of Mart and Tetra

One day, Tetra was wandering through a dungeon.

By chance, she helped Mart, the ex-Demon King.

But then something changed—Mart took her body, and Tetra was left behind, unable to act…

“I’ll make you a Hero. Let’s defeat the Demon King together!!”

Tetra was too weak at first, but still dreamed of becoming a hero.

So she accepted the offer from the ex-Demon King to stop the current Demon King.

• Tetra can’t fight—yet she can save and manage magic power.



• Mart can fight—yet he can’t preserve magic power.

With strengths and weaknesses split between them, the question is simple: can you defeat the Demon King in the end?

Player Comments

One player liked the concept a lot and called it genuinely unique, but felt the game doesn’t fully realize its potential. The premise is that the body contains two different souls: a normal human soul and the powerful, dominant soul of the Demon King. Depending on the choices you make—whether you fight on your own or call on the Demon King for help—the game can deliver different endings.

They also noted that the story gets better later on, though it may arrive too late for players who don’t finish the whole game. On visuals, they said the CG isn’t outstanding, but it’s still acceptable.

Another comment said the setup is very interesting, though it came with a bit of doubt at first. They weren’t sure about the idea that the story changes based on the characters, but after seeing the preview screenshots, they decided to try anyway—mentioning that aside from poses, many visuals looked very similar. Overall, they described it as decent and suggested it may be a good pick for players seeking something like a “fap”-style experience.

Final Thoughts

Mart and Tetra is an RPG where you switch between two characters to defeat the Demon King (or potentially become the “Hero”).

The sex situation can change based on which character you’re controlling.

The game also includes multiple endings, so the question is whether you can discover and witness the true happy ending.