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Steam News30 January 20265mo ago

Shape the Rails! Playtest Rail Defence: Eldritch Siege Out Now!

Greetings, Masters of Loop Defense! Our independently developed new strategy tower defense game— Rail Defense: Eldritch Siege —has officially begun its limited-time Public Playtest, starting today, January 30th!

In this update1

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Full Loopstructor 2: Skyspine update

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Repeated intro

Greetings, Masters of Loop Defense!

What changed

0 fixes1 addition10 changes0 removals
  • Gameplay
  • Maps
  • Store
  • UI and audio
  • Performance
  • Server
addedOur independently developed new strategy tower defense game— Rail Defense: Eldritch Siege —has officially begun its limited-time Public Playtest , starting today, January 30th !
changedCore Experience Highlights:Deep Progression, Arm Your Train: Through trials in Normal and Elite waves, as well as Boss battles, gradually unlock and upgrade the 8 turret types, arming them onto your mobile fortress—the War Train.
changedCore Experience Highlights:Relic Collection, Build Your Playstyle: Collect over 40 unique Rail Relics left behind by the Rail Gods. Cleverly combining them will significantly enhance your combat capabilities, helping you forge a unique clearing strategy.
changedCore Experience Highlights:Dynamic Battlefield, Random Events: Beyond the intense main combat, levels will also randomly feature diverse node events such as supply drops, mysterious merchants, and sudden encounters. Opportunity and risk coexist; every choice can change the course of battle.
changedCore Experience Highlights:Trial Loop, Grow Stronger: Upon completing each trial, you will earn rewards including Turrets, Relics, Rail Devices, and Synergy Nodes. Evolve your tactical system by synthesizing higher-tier turrets, stacking Infusion layers, and cleverly laying rails to alter the battlefield terrain, preparing for the ever-swelling "Outer God Swarm" and ominous curses.
changedCore Experience Highlights:Visit the Rail Defense: Eldritch Siege Steam Store Page.

Loopstructor 2: Skyspine changes

addedOur independently developed new strategy tower defense game— Rail Defense: Eldritch Siege —has officially begun its limited-time Public Playtest , starting today, January 30th !
changedDeep Progression, Arm Your Train: Through trials in Normal and Elite waves, as well as Boss battles, gradually unlock and upgrade the 8 turret types, arming them onto your mobile fortress—the War Train.
changedRelic Collection, Build Your Playstyle: Collect over 40 unique Rail Relics left behind by the Rail Gods. Cleverly combining them will significantly enhance your combat capabilities, helping you forge a unique clearing strategy.
changedDynamic Battlefield, Random Events: Beyond the intense main combat, levels will also randomly feature diverse node events such as supply drops, mysterious merchants, and sudden encounters. Opportunity and risk coexist; every choice can change the course of battle.
changedTrial Loop, Grow Stronger: Upon completing each trial, you will earn rewards including Turrets, Relics, Rail Devices, and Synergy Nodes. Evolve your tactical system by synthesizing higher-tier turrets, stacking Infusion layers, and cleverly laying rails to alter the battlefield terrain, preparing for the ever-swelling "Outer God Swarm" and ominous curses.

Our independently developed new strategy tower defense game— Rail Defense: Eldritch Siege —has officially begun its limited-time Public Playtest, starting today, January 30th!

Gui 2

This test will initially open Character Mode. Players will take on the role of the first available character. Once a master mechanical modifier, she joined the Rail God Research Association and now commands her signature dual-tech turrets—harnessing both lightning and steam—to repel the encroaching void.

Core Experience Highlights:

  • Dual-Tech Turrets, Strategic Assembly:

    Control Auvia, freely combining 4 types of Steam-Powered Turrets (Forge Press, Mortar, Volley Gun, Double Blast) with 4 types of Arc-Tech Turrets (Arc Flash, Fork Bolt, Ion Orb, Superconduct). Experience distinctly different combat styles, from single-target burst to area chaining.

  • Deep Progression, Arm Your Train: Through trials in Normal and Elite waves, as well as Boss battles, gradually unlock and upgrade the 8 turret types, arming them onto your mobile fortress—the War Train.

  • Relic Collection, Build Your Playstyle: Collect over 40 unique Rail Relics left behind by the Rail Gods. Cleverly combining them will significantly enhance your combat capabilities, helping you forge a unique clearing strategy.

  • Dynamic Battlefield, Random Events: Beyond the intense main combat, levels will also randomly feature diverse node events such as supply drops, mysterious merchants, and sudden encounters. Opportunity and risk coexist; every choice can change the course of battle.

  • Trial Loop, Grow Stronger: Upon completing each trial, you will earn rewards including Turrets, Relics, Rail Devices, and Synergy Nodes. Evolve your tactical system by synthesizing higher-tier turrets, stacking Infusion layers, and cleverly laying rails to alter the battlefield terrain, preparing for the ever-swelling "Outer God Swarm" and ominous curses.

▌ How to Participate?

  1. Visit the Rail Defense: Eldritch Siege Steam Store Page.

  2. Find and click the "Request Access" button.

  3. Once access is granted, you will see the game in your Steam Library and can download and play immediately.

▌ Important Notes

  • Test Nature: This build is a precursor to the Demo and may differ significantly from the final version. You may encounter bugs or performance issues during play.

  • Feedback Channels: We strongly encourage you to join our Official Discord server (

https://discord.gg/6Z92rNvrsE) to provide direct feedback, or submit reports via the in-game feedback button.

  • DurationThis Playtest is expected to remain open and will be continuously updated based on your suggestions and feedback, likely until the Demo's official release.

Your participation and feedback are crucial to us. Take action now and be among the first pioneers to defend the rail lines!

Pone Games

Source

Steam News / 30 January 2026

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