Drill Deep. Die Smarter. Face the Swarm.

A survival RTS roguelite made by one developer. Thousands of enemies. No mercy.

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Deep Among the Swarm

Deep Among the Swarm is a hardcore survival RTS roguelite where you battle through waves of thousands of enemies while expanding your base and customizing everything — from your units to your strategy.

You’ll start each run from the surface, fuel your drill, defend your position, and push deeper underground. Every failure makes you smarter, every death makes you stronger.

This game was built entirely by one person — me, John Smith — over the course of two years. I wanted to create something relentless, tactical, and rewarding. I hope you enjoy it — and survive longer than I usually do.

Steam

Gallery

Screenshots from the game

Core Features

About This Game

A challenging survival RTS roguelite about surviving against thousands of enemies. Start each run with the hopes of going as deep as you can. Customize your army with different weapons, armour and upgrades. When you inevitably fail, use the knowledge gained to make your next attempts stronger through meta progression upgrades.

Hold your ground

Once you start fueling your drill, a massive swarm of monsters will attack you. Setup defensive barricades and choke points to survive.

Expand your Base

Clear out and expand into as much of the darkness as you can. The more resources you control, the more powerful you can become. Your goal is to collect as much Radium to fuel your drill as you can. The more you collect, the deeper you can go.

Customize your units and buildings

After every level, all units and buildings can be customized with different weapons, armour and upgrades. The better you do in each mission, the more currency you have to craft new equipment.

Meta Progression

Defeat is inevitable, but after each loss unlock powerful meta progression to become stronger. The further down you go, the more meta progression you will get, and the more powerful you can become!

Drill ever deeper into the unknown!

As you descend you will face increasingly more powerful enemies. Do you have what it takes to survive what lurks below?

Thousands of units

The unrelenting assault of the swarm is upon you. Can you survive long enough?

What Players Are Saying

Here are some real Steam reviews from players around the world:

Taniguchi Satomi

From a Dream to Our Journey Together

Hi, I’m Taniguchi Satomi, an independent game developer from Japan.

When I started working on Deep Among the Swarm, it was just a dream — to create a deep, atmospheric, and hardcore strategy experience on my own.

Thanks to your support, that dream became real. Launching the game on Steam was the first big step, and it’s a step we took together. The positive reviews, strong feedback, and growing community are not just my achievements — they’re ours.

Now, it’s time for the next step: bringing Deep Among the Swarm to PlayStation 5. I truly believe that PlayStation players will embrace the challenge, the tension, and the style of the game just like you did.

This is only the beginning. Under the name Pebble Mountain Games, I plan to keep growing — and eventually turn this solo journey into a full studio. But for now, I just want to say: thank you for being here.

Let’s keep going — deeper and deeper into the swarm.

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