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.

This is the free demo for Circuit Keep. It is the opening of the campaign, and it plays like the full game.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.<h2 class="bb_tag" >WHAT THE DEMO INCLUDES</h2>The opening levels of Act 1, played start to finish. Six module families unlock one at a time: CHARGE NODE, PULSE DRIVER, FIREWALL, BURST EMITTER, JAMMING FIELD, and CHAIN ARC, each with two branching upgrade paths you can switch any time.<h2 class="bb_tag" >INTRUSIONS THAT FIGHT BACK</h2>Four intrusion families push into your maze, and each one breaks your defenses a different way.BYTE and SWARM arrive in a flood and dare your maze to hold the line. PHANTOM cloaks itself so your guns barely scratch it, and you have to peel the cloak away before it reaches the core. DAEMON is a heavy that soaks everything you throw and keeps marching, so you learn to stop it in its tracks and finish it off.No two waves play the same way.<h2 class="bb_tag" >TOOLS TO FIGHT BACK</h2>FOCUS FIRE: Mark any intrusion with a crosshair and every module in range locks onto it immediately.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4798860/extras/922a2cf446d8e19df9d35abbce64223d.poster.avif?t=1783444430" width=924 height=388 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4798860/extras/922a2cf446d8e19df9d35abbce64223d.webm?t=1783444430" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4798860/extras/922a2cf446d8e19df9d35abbce64223d.mp4?t=1783444430" type="video/mp4"></video>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.RESEARCH GRAPH: Struggling? Spend permanent upgrades between attempts. Cleared a level? Switch it to HARD mode and try for a tougher star.<h2 class="bb_tag" >BUILD YOUR MAZE</h2>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.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4798860/extras/0197ea19685171939503bb4c8e718a7d.poster.avif?t=1783444430" width=426 height=126 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4798860/extras/0197ea19685171939503bb4c8e718a7d.webm?t=1783444430" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4798860/extras/0197ea19685171939503bb4c8e718a7d.mp4?t=1783444430" type="video/mp4"></video><h2 class="bb_tag" >THE FULL GAME ADDS</h2>The demo is the on-ramp. The full campaign carries the same build every wave, no fixed loadouts and no RNG drafting, all the way through:<ul class="bb_ul"><li>Three acts and 40+ hand-crafted levels that introduce each module and intrusion one at a time.</li><li>12 module families in all, from cluster splash to chaining electric arcs, each with two payoffs you switch between.</li><li>12 intrusion families, 7 elites, and 3 bosses. PHASE slides through your walls, HOPPER vaults over them, BREAKER eats them, and the KERNEL boss forks child intrusions to hit you from every angle.</li><li>Four damage types (KINETIC, THERMAL, ELECTRIC, CORRUPTIVE) with status effects that stack and combine.</li><li>ENDLESS mode with everything unlocked, for when you want to see how far you can go.</li></ul>Wishlist Circuit Keep to keep going after the demo.

Circuit Keep Demo

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.<h2 class="bb_tag" >INTRUSIONS THAT FIGHT BACK</h2>Each intrusion breaks your defenses a different way.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/40fa4e9218157291c2396ef3ecc99a5c.poster.avif?t=1783796424" width=214 height=214 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/40fa4e9218157291c2396ef3ecc99a5c.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/40fa4e9218157291c2396ef3ecc99a5c.mp4?t=1783796424" type="video/mp4"></video> <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/990266c753ea07b047f67776e51bd061.poster.avif?t=1783796424" width=214 height=214 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/990266c753ea07b047f67776e51bd061.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/990266c753ea07b047f67776e51bd061.mp4?t=1783796424" type="video/mp4"></video>PHASE turns intangible mid-wave and slides straight through your walls. HOPPER vaults over walls and air gaps entirely.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/be95193791a512124e22094967dc1cf4.poster.avif?t=1783796424" width=214 height=214 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/be95193791a512124e22094967dc1cf4.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/be95193791a512124e22094967dc1cf4.mp4?t=1783796424" type="video/mp4"></video> <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/d4d7b3d0f29e1bc86cd65073b0f9e18c.poster.avif?t=1783796424" width=214 height=214 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/d4d7b3d0f29e1bc86cd65073b0f9e18c.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/d4d7b3d0f29e1bc86cd65073b0f9e18c.mp4?t=1783796424" type="video/mp4"></video>SCRAMBLER drags down the fire rate of every module near it. PARASITE skips your CORE and drains your CHARGE NODES instead.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/a321fc2402d34e829478f62439e798d1.poster.avif?t=1783796424" width=214 height=214 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/a321fc2402d34e829478f62439e798d1.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/a321fc2402d34e829478f62439e798d1.mp4?t=1783796424" type="video/mp4"></video> <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/1c8090ac8c83f38b35b83cb5646a7fc1.poster.avif?t=1783796424" width=214 height=214 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/1c8090ac8c83f38b35b83cb5646a7fc1.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/1c8090ac8c83f38b35b83cb5646a7fc1.mp4?t=1783796424" type="video/mp4"></video>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.<h2 class="bb_tag" >TOOLS TO FIGHT BACK</h2>FOCUS FIRE: Mark any intrusion with a crosshair and every module in range locks onto it immediately.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/986319d7136048adb8b0ab474068625b.poster.avif?t=1783796424" width=462 height=194 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/986319d7136048adb8b0ab474068625b.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/986319d7136048adb8b0ab474068625b.mp4?t=1783796424" type="video/mp4"></video>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.<h2 class="bb_tag" >BUILD YOUR MAZE</h2>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.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/0197ea19685171939503bb4c8e718a7d.poster.avif?t=1783796424" width=426 height=126 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/0197ea19685171939503bb4c8e718a7d.webm?t=1783796424" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4731380/extras/0197ea19685171939503bb4c8e718a7d.mp4?t=1783796424" type="video/mp4"></video><h2 class="bb_tag" >THREE ACTS. 40+ LEVELS. ENDLESS MODE.</h2>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.<h2 class="bb_tag" >WHAT IS IN THE BOX</h2><ul class="bb_ul"><li>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.</li><li>Four damage types: KINETIC, THERMAL, ELECTRIC, and CORRUPTIVE, each with status effects that stack and combine.</li><li>12 intrusion families, 7 elites, and 3 bosses.</li><li>No fixed loadouts. No RNG drafting. Every module you have unlocked is available every wave.</li></ul>