The Rust Bastion

By Crescent Fountain Adventures

The Rust Bastion

A Steampunk Stronghold for 5e Adventures

From the creators of The Rust and the Raider comes The Rust Bastion - a complete 120-page expansion that transforms your campaign with a fully customisable steampunk bastion system.

Your players gain more than a hideout: they claim a living fortress. A forge of invention, a hub of research, a stronghold of defence. The Bastion is a sky-city enclave or floating fortress that grows alongside your party - upgraded, defended, and personalised through their choices.

Inside you'll find:

The Sky Bastion System - rules for acquiring, upgrading, and defending your stronghold

Airship Maintenance Cycles & Enhancement Points - manage your vessel's progress with research, upgrades, diplomacy, and reconnaissance

16 Fully-Realised Rooms - from the Steam-works Forge to the Skyward Observatory, each with lore, mechanics, and unique hirelings

Events & Challenges - sky pirate raids, rust infestations, political intrigue, and crises that make the Bastion part of the story

Enhancements & Defences - construct turrets, elemental reactors, cloaking engines, and more to forge a fortress that is uniquely your own

With stunning lore and game-ready mechanics, The Rust Bastion deepens the world of The Rust and the Raider, giving Dungeon Masters a flexible toolkit and players a stronghold they will fight to protect.

Forge. Defend. Discover. The Bastion is yours.

• Format: Paperback
• Language: English
• ISBN: B0FNWDPWHY
• ISBN13: 9798262363636
• Release Date: August 2025
• Publisher: Independently Published
• Length: 122 Pages
• Weight: 0.66 lbs.
• Dimensions: 0.3" x 8.5" x 11.0"