D&D Xanathar's Guide to Everything (5E)
Publisher: Wizards of the Coast
System: D&D fifth edition
Type: Adventure
https://store.steampowered.com/app/720130
Wayfinder's Guide to Eberron
Publisher: Wizards of the Coast
System: D&D fifth edition
Type: Accessory
https://store.steampowered.com/app/917890
D&D Classics: Complete Wizard's Handbook
Publisher: Wizards of the Coast
System: D&D Classics - AD&D 1E/2E
Type: Accessory
https://store.steampowered.com/app/1078220
D&D Classics: G1 Steading of the Hill Giant Chief
Publisher: Wizards of the Coast
System: D&D Classics - AD&D 1E/2E
Type: Adventure
https://store.steampowered.com/app/1086600
The Sixth Gun: The Winding Way
Publisher: Pinnacle Entertainment Group
System: Savage Worlds
Type: Adventure
https://store.steampowered.com/app/713630
Hellfrost: Matters of Faith
Publisher: Triple Ace Games
System: Savage Worlds
Type: Adventure
https://store.steampowered.com/app/859400
Path of Dragons
Publisher: Legendary Games
System: Pathfinder RPG and D&D 3.5/ OGL
Type: Accessory
https://store.steampowered.com/app/828690
Dungeon Crawl Classics #66.5: Doom of the Savage Kings
Publisher: Goodman Games
System: Dungeon Crawl Classics
Type: Adventure
https://store.steampowered.com/app/1076860