Empyrean Defense
- Windows

About this game
The battle for the Empyrean Realm has begun. A ruthless enemy commander has launched a full scale invasion, searching for the Empyreal Core, an ancient secret technology hidden deep within the realm. As the last line of defense, you must deploy, upgrade, and adapt a wide array of military, economic, and support sites to survive increasingly intense enemy assaults.
Empyrean Defense is fast paced, challenging, and deeply strategic. Success depends on quick decision making, smart positioning, and long term planning as enemy pressure escalates.
Play your way. Empyrean Defense features full mouse & keyboard and controller support, including a great experience on Steam Deck.
Strategic Tower Defense with Modern Military Warfare
Command a variety of defensive and support structures, from sniper towers and missile launchers to research centers and power plants. Each site plays a vital role in your defense:
- Military: Engage enemies directly with a mix of classic and advanced structures
- Economic: Generate valuable resources to fund expansion and upgrades
- Power: Maintain an energy grid to support advanced infrastructure
- Support: Research new technologies that enhance and specialize your defenses
Upgrade, Defend, Control
- Customizable Sites: Upgrade and modify key components to adapt to any battlefield
- Diverse Enemy Waves: Face ground, naval, and airborne units, including powerful bosses
- Player Abilities: Call in airstrikes, deploy protective bubble shields, and even manipulate the battlefield with lightning storms and blizzards
With 40+ skills across 4 branches in the skill tree, 20+ enemy units and bosses, 25+ sites to build and upgrade, and 15+ active abilities to learn, every decision matters and no two defenses play the same.
War Across 27 Regions
Defend forests, deserts, snowy mountains, and warn torn cities across 27 regions. Each region introduces new threats, terrain challenges, and enemy tactics that demand constant adaptation.
Story-Driven Campaign
Follow a progressing campaign featuring four core characters who provide tactical guidance and battlefield banter as the conflict unfolds. This war is about more than survival. It is about stopping the enemy commander before he unlocks the power of the Empyreal Core.
Can you keep up, adapt under pressure, and prevent the realm’s secrets from falling into enemy hands?
System requirements
- OS
- Windows 10 (64-bit)
- Processor
- Intel i5-2500K / AMD FX-6300
- Memory
- 4 GB RAM
- Graphics
- NVIDIA GTX 970 / AMD R9 290
- Storage
- 3 GB available space
- Minimum
- Requires a 64-bit processor and operating system
Support links
Showing 24 of 31 achievements24 of 31

All Star
Earn all stars across every region and difficulty
0.0%Ultra Rare

Cash Grab
Collect 100,000 credits from coin drops
0.0%Ultra Rare

Craftsman
Craft your first piece of equipment
17.1%Rare

Elena's Notebook
Find and collect Elena's lost field notebook
5.7%Very Rare

Empyrean Legacy
Earn all stars and medals across every region and difficulty
0.0%Ultra Rare

Explorer
Successfully defend a region in five different biomes
0.0%Ultra Rare

Field Mechanic
Repair a total of 200,000 site hitpoints in a single mission
8.5%Very Rare

Fusion Engineer
Build one of each Tier II military site in a single mission
0.0%Ultra Rare

Ground Control
Eliminate 10,000 ground enemies
11.4%Rare

Hidden Cache
Find and collect a hidden supply cache
11.4%Rare

High Altitude
Eliminate 5,000 airborne enemies
0.0%Ultra Rare

Knowledge Is Power
Learn a new ability
62.8%Common

Lost and Found
Recover a piece of Jax's past, left behind on the battlefield
2.8%Ultra Rare

Mass Production
Manufacture 5,000 items at your industrial production sites
0.0%Ultra Rare

Minefield Menace
Elimate 1,000 enemies with a landmine
5.7%Very Rare

Never had a Chance
Eliminate an enemy Submarine before it has a chance to submerge beneath the waves
0.0%Ultra Rare

One-Man Army
Eliminate 300 enemies with a single site in a mission
34.2%Uncommon

One Shot. One Kill.
Eliminate 1,000 enemies in a single shot using the Sniper Tower
2.8%Ultra Rare

Plugged In
Build 10 power sites in a single mission
0.0%Ultra Rare

Rest in Glory
Pay your respects at the sarcophagus of Theron Solana, the late Supreme Ruler of the Empyrean Realm
11.4%Rare

Shipwrecked
Discover the wreckage of a long lost battleship hidden beneath the waves
0.0%Ultra Rare

Skillful
Spend a skill point
62.8%Common

Skyfall
Eliminate 50 airborne enemies with the Missile Strike ability
0.0%Ultra Rare

Speed Demon
Earn all Time Medals across every region and difficulty
0.0%Ultra Rare