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