Build train tracks and command turrets in this Loop-based TD Roguelike game! Face the Eldritch God's trials, fend off waves of minions, and build unbreakable rail defenses. Strategize, upgrade, and fight to protect humanity's last hope against cosmic horrors!

Rail Defence: Eldritch Siege is the long-anticipated sequel to the creative Tower Defense game Loopstructor. Building on the original's signature Loop-based Tower Defense mechanics, this game pushes the concept further than ever before.

Core Gameplay: Loop-based Tower Defense

Step into a mysterious steampunk world warped by the influence of hidden Rail Gods , design rail networks, deploy and upgrade unique Battle Trains , and harness new systems such as Rail Enchantments to transform your mobile fortresses into devastating engines of defense. Every decision matters, and every move could mean survival — or collapse.

Deep Strategy

A dynamically shifting battlefield with endless tactical combinations tests your planning and adaptability.

High Replayability

Unlock diverse trains, unique bases, and powerful relics to craft your own tactical builds.

Build Planning

Preview maps and plan your strategy direction — play defensively and develop your base or fight aggressively to grow stronger, it's all in your control.

Add Rail Defence: Eldritch Siege to your Steam Wishlist today! Prepare yourself, as your rails will be the final line of defense against the unspeakable.