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Irongrim Tower
Tower defense meets city building in a grimdark sci-fi world. Build vertically, manage resources, defend against alien hordes, and command machine priests in humanity's last stronghold.

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Features
Single-player
Family Sharing
Profile Features Limited 
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?

“Irongrim Tower is entering Early Access because I believe in developing it alongside a community. The core gameplay mechanics are solid, but I want to refine the experience, balance, and content based on real player feedback.

I am committed to transparency throughout development and want players to be part of shaping the game into the best experience possible. The feedback from Early Access will be invaluable for finetuning difficulty curves, expanding the building system, and polishing the gameplay flow.”

Approximately how long will this game be in Early Access?

“I anticipate the game will remain in Early Access for at least 12 months. This timeline allows me to implement planned features, respond to community feedback, and ensure the final release meets quality standards. However, I prioritize delivering a polished, complete experience over meeting specific deadlines, so this timeframe may adjust based on development progress and community input.”

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

“The full version will expand significantly on the Early Access foundation:
Extended story elements / worldbuilding and narrative content
More strategic depth and building types
More enemies and AI behaviour
Game mechanics I have worked on already but kept out of the early access version of the game, such as transportation and space interactions
Improving the UI
QOL and overall polish and refinement
”

What is the current state of the Early Access version?

“The game is stable and playable with hours of engaging content. Players can build their base, manage resource chains, and defend against increasingly challenging enemy waves.”

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

“Price increases will coincide with major content updates and will be announced well in advance to give the community fair notice.
Players who purchase during Early Access will never need to pay additional fees for content updates, you'll receive all additions and improvements as part of your original purchase.
”

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

“Steam Community Hub for discussions, suggestions, and bug reports
Developer updates sharing progress
Community polls on feature priorities and design decisions
Direct developer engagement in forums and discussions[/list]”
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About This Game

The factory world of Hephaestus burns. Once a beacon of industry and production is now a graveyard of steel and fire. Endless xeno hordes swarm across its ruined surface, and you command the final stronghold: A lone sentinel tower standing as humanity's last defense against total annihilation.

Irongrim Tower is a unique fusion of tower defense and city-building strategy, set in a compelling dark science fiction universe. As Station Commander, you must build upward from a central core, creating a towering bastion that serves as both fortress and city while managing supply chains and defending against relentless alien attacks from both sides.

Build Your Vertical Empire

• 120+ Building Types across multiple categories: residential districts, industrial facilities, power infrastructure, defensive installations, religious shrines, and specialized laboratories

• Build layer by layer, creating a magnificent tower that reaches toward the stars

• Underground Expansion- Drill beneath the surface to uncover ancient secrets and expand your base downward

Command Your People

• Transform colonists into factory workers, machine priests, biomancers, engineers, and elite combat specialists

• Population Dynamics - Each colonist has unique stats, backstories, and specializations that affect their performance

• Recruit and train defenders including assassins, officers, and specialized military units

• Worker Assignment - Strategically assign personnel to maximize efficiency and unlock building potential

Defend Against the Xeno Threat

Face endless waves of alien invaders with distinct combat roles:

• Enemies assault from both left and right flanks simultaneously, forcing tactical decisions

• Diverse Enemy Types each with unique behaviors and abilities

• Survive increasingly dangerous attacks as enemy numbers and varieties grow

Technology & Faith

Discover ancient artifacts and embrace the machine religions that shape your technological advancement:

• Archaeological Discovery - Uncover technology shards through drilling and exploration

• Arrange artifacts on religious grids to unlock powerful upgrades and new capabilities

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 (64-bit)
    • Processor: Single Core Processor 2.0 GHz or faster
    • Memory: 1 GB RAM
    • Graphics: Integrated graphics with OpenGL 2.0 support
    • Storage: 390 MB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10/11 (64-bit)
    • Processor: Single Core Processor (Very high Clockrate)
    • Memory: 2 GB RAM
    • Graphics: Dedicated graphics card
    • Storage: 500 MB available space
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