Circuit Keep
Your towers don't stop anything. Enemies walk straight over them. The only thing that turns them aside is a wall, so you build the maze yourself. Then the intrusions start fighting back. PHASE slides through your walls. HOPPER vaults over them. BREAKER eats them. You built the maze. Now defend it.
About
In Circuit Keep, your towers don't block anything.
A wave spawns. Enemies pathfind straight across the grid toward your CORE. They walk over every module you placed. The only thing that makes them change direction is a wall. So you build the maze, line it with firepower, and force every wave down a path you chose.
Then they start pushing back.
INTRUSIONS THAT FIGHT BACK
Each intrusion breaks your defenses a different way.
PHASE turns intangible mid-wave and slides straight through your walls. HOPPER vaults over walls and air gaps entirely.
SCRAMBLER drags down the fire rate of every module near it. PARASITE skips your CORE and drains your CHARGE NODES instead.
BREAKER exists to eat your walls. KERNEL, a boss, forks child intrusions to overwhelm you from multiple angles at once.
No two waves play the same way.
TOOLS TO FIGHT BACK
FOCUS FIRE: Mark any intrusion with a crosshair and every module in range locks onto it immediately.
OVERDRIVE: Permanently boost the damage of an entire module family.
OVERCLOCK: Speed up your economy, cooldowns, and modules for a short window when you need it most.
BUILD YOUR MAZE
Place FIREWALLS to reroute intrusions exactly where you want them. Your modules run on power, so placement matters as much as firepower. Every wall, every turn, every module position is a decision.
THREE ACTS. 40+ LEVELS. ENDLESS MODE.
A hand-crafted campaign introduces each module and intrusion one at a time across three acts. Struggling? Spend permanent upgrades on the RESEARCH GRAPH. Want more? Switch any level to HARD mode. Want to go as far as you can? Enter ENDLESS mode with everything unlocked.
WHAT IS IN THE BOX
12 module families with branching upgrade paths. Two paths per module, each with its own payoff: crit, knockback, extra targets, and more. Switch paths any time.
Four damage types: KINETIC, THERMAL, ELECTRIC, and CORRUPTIVE, each with status effects that stack and combine.
12 intrusion families, 7 elites, and 3 bosses.
No fixed loadouts. No RNG drafting. Every module you have unlocked is available every wave.
Videos
Screenshots
System requirements
Minimum Requires a 64-bit processor and operating system OS: Windows 10 (64-bit) Processor: Intel Core i3-4000 series / AMD equivalent (2 GHz dual-core) Memory: 4 GB RAM Graphics: Integrated graphics with WebGL 2.0 support (Intel HD 4000 or better) DirectX: Version 11 Storage: 500 MB available space Sound Card: Any DirectX-compatible sound device Recommended Requires a 64-bit processor and operating system OS: Windows 10/11 (64-bit) Processor: Intel Core i5-8000 series / AMD Ryzen 5 / equivalent Memory: 8 GB RAM Graphics: Dedicated GPU with WebGL 2.0 support (GTX 1050 / RX 560 or better) DirectX: Version 11 Storage: 1 GB available space Sound Card: Any DirectX-compatible sound device
Minimum Requires an Apple processor OS: macOS 11.0 (Big Sur) Processor: Apple M1 Memory: 4 GB RAM Graphics: Apple Silicon integrated GPU Storage: 500 MB available space Additional Notes: Apple Silicon only (M1 or later). Intel Macs are not supported Recommended Requires an Apple processor OS: macOS 13.0 (Ventura) or later Processor: Apple M1 or later Memory: 8 GB RAM Graphics: Apple Silicon integrated GPU Storage: 1 GB available space Additional Notes: Apple Silicon only (M1 or later). Intel Macs are not supported
Minimum OS: Ubuntu 20.04+ / SteamOS 3.0 Processor: Dual-core 2.0 GHz x86_64 Memory: 4 GB RAM Graphics: GPU with WebGL 2.0 support (Mesa 20+) Storage: 500 MB available space Recommended OS: Ubuntu 22.04+ / SteamOS 3.5 Processor: Quad-core 2.5 GHz x86_64 Memory: 8 GB RAM Graphics: Any modern GPU with up-to-date Mesa drivers Storage: 1 GB available space