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Loopstructor 2: Skyspine
Build rail networks, deploy battle trains, and use turret enchantments to create mobile fortresses. Hold the line in the wasteland left by the Sinking, uncover the floating city's dark truth, and choose between conviction and rebellion.

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Features
Single-player
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔ ✔
Simplified Chinese ✔ ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Rail layouts, turret combinations, and build variety need to be tested through actual play. Early Access will help us gather that feedback, refine route choices, progression, balance, and controls, and gradually add characters and gameplay content.”

Approximately how long will this game be in Early Access?

“We have not set a date for leaving Early Access. The full release will depend on progress with content development, balancing, and stability testing. We will share progress through development updates and announce the full release date once the schedule is settled.”

How is the full version planned to differ from the Early Access version?

“For the full release, we plan to offer 9 classes, over 40 turrets, and over 100 relics, along with Endless Random Mode and Monthly Challenge Mode, expanding the options for rail planning and different builds. During Early Access, we plan to add content gradually while balancing the game, improving performance, and fixing issues based on feedback. These are full-release goals, not a list of everything included in the demo or at the Early Access launch.”

What is the current state of the Early Access version?

“The demo currently lets you try rail planning, battle train and turret deployment, enchantments, and build choices. The Early Access version is still in development, with plans to expand characters, progression and unlocks, difficulty options, and game modes. The launch announcement will detail the content included in the Early Access release.”

Will the game be priced differently during and after Early Access?

“Pricing for Early Access and the full release has not been finalized. If we change the price, we will announce it in advance on Steam. We plan to provide core content and character updates for free during the first phase, with paid cosmetic skins planned separately.”

How are you planning on involving the Community in your development process?

“Use the Steam discussions, our QQ group, or Discord to report bugs, share builds, and tell us about your experience. Including the version number, steps to reproduce an issue, screenshots, or a save file will help us investigate. We will review the main issues affecting play, use testing to guide fixes and adjustments, and explain changes through Steam announcements and our community channels. We may also invite players to test new content when needed.”
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Download Loopstructor 2: Skyspine Demo

This game is not yet available on Steam

Planned Release Date: December 2026

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About This Game

Loopstructor 2: Skyspine is the full-fledged sequel to Loopstructor, bringing a fresh approach to tower defense built around track planning. Nuclear devastation has left the surface in ruins, but the world below is no safe haven. As creatures swarm your position, your defenses take the form of war trains racing along looping tracks. Plan their routes, combine your turrets, and bring the battlefield under fire.

LAY THE TRACKS. KEEP YOUR DEFENSES MOVING.

Connect stations across the battlefield to build a loop for each war train. Concentrate your fire in one area, or spread your trains across several routes to meet the swarm. You decide where the turrets go and where the trains run. Every lap brings another chance to strike.

STEAM, CHAIN ATTACKS, MISSILES. BUILD YOUR WAY.

Send steam turrets into battle, sweep through swarms with chain attacks, or rain down missiles and arcing shots. Different turret and upgrade combinations open up different ways to fight. With each choice of three rewards, strengthen a favorite setup or take your build in a new direction. Turn one choice after another into a train formation that packs a punch.

WATCH THE TURRETS TURN. WATCH THE SWARM CLOSE IN.

More grounded environments and striking creature designs give the underground battlefield a new look. Turrets now show different sides as they rotate to track enemies and open fire from moving trains. Up close, watch the machinery turn and the creatures advance. Pull back to see your entire formation trading fire with the swarm.

Features

  • 9 classes offering different combat choices

  • Over 40 turrets: combine steam, chain attacks, missiles, and more to build your own fleet

  • 100+ relics to expand your build options

  • Plan your own rail loops: connect stations, route multiple battle trains, and cover the battlefield with moving defenses

  • Roguelike builds with a choice of three each round: combine turrets, enchantments, and upgrades to shape your playstyle

  • Endless Random Mode

  • Monthly Challenge Mode

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS *: Windows 7 SP1 or newer
    • Processor: Dual Core 2.0 GHz or better
    • Memory: 16 GB RAM
    • Graphics: GTX 960 or higer
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 2 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
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What Curators Say

2 Curators have reviewed this product. Click here to see them.