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Chthonian TD
Fast-paced co-op action roguelite × tower defense. Fight escalating waves, risk resources in a dangerous mine, defeat the boss - then see how long you survive in Endless.

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Features
Languages:
Interface Full Audio Subtitles
English ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“I want to get real player feedback on the core co-op loop (two-layer arenas, shared economy, four classes) and on the meta progression system before I lock in larger systems like more classes, towers and maps. Early Access lets me iterate quickly based on what players actually enjoy.”

Approximately how long will this game be in Early Access?

“My current plan is to keep Chthonian TD in Early Access for roughly 6–12 months. This may change depending on feedback, how much content I add, and how many players are actively interested.”

How is the full version planned to differ from the Early Access version?

“The full version is planned to expand the existing meta progression (more crystal upgrades and unlocks), add more enemy types, additional maps/biomes, more classes and towers, and general polish and quality-of-life improvements.”

What is the current state of the Early Access version?

“The core loop is playable: 1–4 player online co-op on PC (keyboard & mouse), Dungeon and Wide modes, six regular waves that introduce new enemy types, a Wave 7 boss and an optional Endless mode after the boss. There are four base towers plus one class tower per class, run-based XP upgrades, and a basic meta progression system where you earn crystals after a run and spend them on base stats (damage, move speed, attack speed, attack range and max health). There is also a simple in-game library where you can look up classes, towers, enemies, perks and resources. English only; no controller support or in-game chat yet.”

Will the game be priced differently during and after Early Access?

“Yes. The Early Access price is lower. I plan to increase the price slightly when the game leaves Early Access to reflect the additional content and features added over time.”

How are you planning on involving the Community in your development process?

“I’ll be using Steam discussions (and player reviews) to gather feedback on balance, new content, meta progression and quality-of-life requests. I plan to adjust enemy difficulty, towers, classes and future features based on what active players report and what keeps co-op runs fun.”
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This game is not yet available on Steam

Planned Release Date: Mar 20, 2026

This game plans to unlock in approximately 3 weeks

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About This Game

Chthonian TD

is a fast-paced co-op action roguelite × tower defense game for 1–4 players.

Short, intense runs. Constant pressure. Real decisions.

You hold the line against escalating enemy waves, dive into a dangerous crystal mine to fuel your build, defeat a boss - and, if you dare, push into Endless Mode, where survival has no ceiling.

You’re always in the fight

This isn’t passive tower defense.

You’re moving, aiming, dodging, reviving teammates and reacting in real time while your defenses shape the battlefield. Towers matter - but player skill decides whether you live or die.

Grow stronger. Choose your risk.

Leveling up means choosing cards - not passive stats.

Each card alters how you fight, defend, or scale risk.
Some stabilize the run. Others push it into chaos.

No runs play the same.

Defend above. Risk below.

Each run revolves around a simple tension:

  • Stay above and hold the line

  • Or descend into the mine for more power - at real risk

Timing, coordination and greed define every run.

Four roles. One team.

Every class brings a distinct strength:

  • Fighter breaks pressure and controls space

  • Miner accelerates growth through risky resource plays

  • Engineer stabilizes defenses and turns lanes into kill zones

  • Medic keeps the run alive when things fall apart

Players grow together, but builds diverge every run.

Shape the battlefield

Your defenses are more than damage numbers.

  • Precision weapons for key targets

  • Heavy tools for crowd control

  • Traps and barricades to bend enemy movement

Enemies react to what you build. Smart placement matters more than raw power.

What’s in Early Access

  • 1–4 player online co-op

  • Short, replayable runs (~15 minutes)

  • Two distinct map styles with different combat dynamics

  • Boss fights followed by optional Endless Mode

  • Persistent progression between runs

  • Stylized low-poly dark fantasy visuals

  • No friendly fire - coordination over chaos

Vision

Chthonian TD is built around one idea:

Relentless action, meaningful choices, and co-op that actually demands teamwork.

Fight above. Mine below. Survive together.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10/11
    • Processor: 5th Generation Intel i5 CPU or equivalent
    • Memory: 4 MB RAM
    • Graphics: GTX 670 or higher
    • Storage: 2 MB available space
    Recommended:
    • Requires a 64-bit processor and operating system
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