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Hello! 🌺

I’m creating an Undertale AU/fangame called Underpest: No Mercy.

(This is a volunteer fan project with no payment — made out of passion and for fun.)

Note: This image is only concept art and does not represent the final game.

 Story Concept:

In this universe, red echoing flowers begin to spread across the Underground, infecting monsters and turning them into violent, starving, zombie-like creatures.

In this world, there is no option to spare — the infected are no longer themselves.

The only way to survive is to fight.

Story:

The story follows Frisk and Flowey as they try to collect the 6 human SOULs and escape a destroyed and infected Underground while exploring what remains of this world.

🌺 Looking for collaborators:

I’m currently looking for:

Programmers (especially GameMaker)

Pixel artists

If you’re interested in joining or want to know more, feel free to contact me:

My Discord: super_soneco12

 Concept art by (Polina Levchenko)

 Follow the project:

Game Jolt: (https://gamejolt.com/c/underpestnomercy-mrr93r)

Tumblr: (https://www.tumblr.com/supersoneco-121?source=share)

Hello everyone! 🌺

I’m creating an Undertale AU/fangame called Underpest: No Mercy.

This is an early-stage project (not a full game yet — currently concepts and ideas).

 This is a fan project (no payment — made for passion).

World / Setting:

In this universe, red echoing flowers spread across the Underground, infecting monsters and turning them into violent, starving, zombie-like creatures.

In this world, there is no option to spare — the only way to survive is to fight the infected.

Story:

The story follows Frisk and Flowey as they try to collect the 6 human SOULs and escape this destroyed world, while struggling to survive and explore what remains of the Underground.

Infected and Combat:

The infected have distorted voices and broken speech tied to their past memories.

Some newly infected monsters may still retain consciousness for a short time — they won’t attack immediately and may even ask for help.

It is possible to spare them, but this will have consequences, as they will eventually fully transform.

Environment:

Most areas are overrun by the flowers, which can block paths and make exploration more difficult.

During your journey, you can find or buy items that will help you in battles.

Collaboration:

I’m currently looking for collaborators — especially programmers (GameMaker) and artists — to help develop the project.

If you’re interested, my Discord is: super_soneco12

Follow the project:

Game Jolt: 

⁠https://gamejolt.com/c/underpestnomercy-mrr93r

Tumblr: https://www.tumblr.com/supersoneco-121?source=share

Concept art by Polina Levchenko

Hello! I’m creating an Undertale fangame/AU called Underpest: No Mercy, and I’m looking for collaborators to help turn this AU into a real game.

Concept: In this universe, red echo flowers have spread across the Underground, infecting monsters and turning them into violent, zombie-like creatures driven by hunger.

In this world, mercy no longer exists — infected monsters cannot be spared, and the only option is to fight them.

There are different types of infected monsters:

Recently infected monsters may still retain fragments of who they were. They may not attack and might ask for help. You can choose to spare them, but this may have consequences later.

Fully infected monsters have distorted, broken speech, representing fragmented memories caused by the infection.

During exploration, you’ll encounter different areas, including regions heavily covered by flowers that can block paths and force alternative routes. You’ll also be able to find or purchase items that help with survival and combat.

I’m currently looking for: – Programmers (GameMaker or Unity)

– Pixel artists

This is a volunteer/hobby project.

If you're interested or want to know more, feel free to DM me or contact me on Discord: [super_soneco12]

You can also check the project

 here: [https://gamejolt.com/c/underpestnomercy-mrr93r]

Hi, I’m creating an Undertale AU/fangame called Underpest: No Mercy and I’m looking for pixel artists and programmers to help bring this project to life. Here are some concept arts of the infected.

Context: Underpest: No Mercy is a post-apocalyptic Undertale universe where red echo flowers spread through the Underground, infecting monsters and turning them into violent, hungry zombie-like creatures. In this world there is no mercy option, because the infected are already gone and the only way to survive is by fighting and killing them. The infected also have distorted dialogue caused by the flowers, creating different types of infected monsters.

If you’re interested and want to know more or participate, my Discord link is [super_soneco12 ]

Game Jolt community: [https://gamejolt.com/c/underpestnomercy-mrr93r]

(This is a fan-made fangame with no payment, made for passion and fun.)

do you have Discord?

Hello! I’m creating an Undertale fangame/AU called Underpest: No Mercy, and I’m looking for collaborators to help turn this AU into a real game.

Concept: In this universe, red echo flowers have spread across the Underground, infecting monsters and turning them into violent, zombie-like creatures driven by hunger.

In this world, mercy no longer exists — infected monsters cannot be spared, and the only option is to fight them.

There are different types of infected monsters:

Recently infected monsters may still retain fragments of who they were. They may not attack and might ask for help. You can choose to spare them, but this may have consequences later.

Fully infected monsters have distorted, broken speech, representing fragmented memories caused by the infection.

During exploration, you’ll encounter different areas, including regions heavily covered by flowers that can block paths and force alternative routes. You’ll also be able to find or purchase items that help with survival and combat.

I’m currently looking for: – Programmers (GameMaker or Unity)

– Pixel artists

This is a volunteer/hobby project.

If you're interested or want to know more, feel free to DM me or contact me on Discord: [super_soneco12]

You can also check the project here: [https://gamejolt.com/c/underpestnomercy-mrr93r]

Hello! I’m creating an Undertale fangame/AU called Underpest: No Mercy, and I’m looking for collaborators to help turn this AU into a real game.

Concept: In this universe, red echo flowers have spread across the Underground, infecting monsters and turning them into violent, zombie-like creatures driven by hunger.

In this world, mercy no longer exists — infected monsters cannot be spared, and the only option is to fight them.

There are different types of infected monsters:

Recently infected monsters may still retain fragments of who they were. They may not attack and might ask for help. You can choose to spare them, but this may have consequences later.

Fully infected monsters have distorted, broken speech, representing fragmented memories caused by the infection.

During exploration, you’ll encounter different areas, including regions heavily covered by flowers that can block paths and force alternative routes. You’ll also be able to find or purchase items that help with survival and combat.

I’m currently looking for: – Programmers (GameMaker or Unity)

– Pixel artists

This is a volunteer/hobby project.

If you're interested or want to know more, feel free to DM me or contact me on Discord: [super_soneco12]

You can also check the project here: [https://gamejolt.com/c/underpestnomercy-mrr93r]