Action roguelite meets tower defense: the swarm and fog threaten your base. Build turrets by day, fight at night as a small robot. Bring Lumen from enemies back to the reactor to keep the light on: when the reserve runs out, the fog eats away at your buildings.

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Planned Release Date: 2027

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About This Game

Your light depends on the enemies you take down.

Build the defenses you’ll fight alongside. Take control of a small robot and face the swarm in an action roguelite blending tower defense and base building.

Aim, fire and dodge alongside your turrets. Protect the reactor and bring Lumen from fallen enemies back to it to keep the light on.

If the reserve runs dry, your safe ground shrinks, exposing your buildings to corrosive fog. In a crisis, you'll sometimes have to enter the fog to recover Lumen.

Place turrets, cover vulnerable approaches, and extend your network with relays. Day has no timer: prepare your defenses at your own pace, then start the night when you're ready to put them to the test.

Between nights, choose your blueprints and upgrades from the cards on offer. Strengthen your base and combine doctrine effects to adapt your strategy to the coming assaults.

Even after defeat, invest the resources earned over the nights in permanent upgrades for your robot and defenses. Return stronger to hold out longer against the swarm.

  • Take your time: Place your defenses during the day, with no timer rushing you into battle. You decide when it's time to face the swarm.
  • Join the firefight: Control a small robot and take on the swarm with your turrets at your side. Aim your shots and dodge incoming attacks. Keep those enemies off the reactor!
  • Bring the Lumen home: Fallen enemies leave the fuel your light needs. Collect it near the fighting, then deposit it at the reactor or a connected relay.
  • Give your base room: Add relays to extend your network and open up more building space. Decide where your next stretch of defenses belongs. Your light has to reach the buildings you want to protect.
  • Make the cards count: Pick building blueprints and upgrades between nights, then put your choices to work before the next assault. What does your defense need most?
  • Put doctrines to work: Combine their effects to strengthen your robot and defenses. Build on the choices you've already made, with bonuses for the buildings you rely on and the robot fighting beside them.
  • Mind the fog: An empty Lumen reserve means shrinking light and damage to exposed buildings. Recovering the Lumen left beyond the light can become a desperate job!
  • Keep something after defeat: Use rewards from completed nights to buy permanent upgrades between runs. Give your robot and defenses a stronger start on your next attempt.
  • Guard the reactor: Its destruction ends your run. Enemy attacks and creeping corrosion both threaten it, so keep the swarm back and the Lumen coming!

I'm making Lumen Keeper at Pelleteuse Gaming, my one-person studio.

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System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10/11 (64-bit)
    • Processor: Intel Core i5-8400 / AMD Ryzen 5 2600
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GeForce GTX 1060 (6 GB) / AMD Radeon RX 580 (8 GB)
    • DirectX: Version 11
    • Storage: 2 GB available space
    • Additional Notes: System requirements may change during development. Tested on Steam Deck using Proton
    Recommended:
    • Requires a 64-bit processor and operating system