D&D Tactical Maps Reincarnated
Publisher: Wizards of the Coast
System: Generic Add-ons
Type: Map Module
https://store.steampowered.com/app/1031410
D&D Monster Manual
Publisher: Wizards of the Coast
System: D&D fifth edition
Type: Accessory
https://store.steampowered.com/app/360115
D&D Classics: G2 The Glacial Rift of the Frost Giant Jarl (1E)
Publisher: Wizards of the Coast
System: D&D Classics - AD&D 1E/2E
Type: Adventure
https://store.steampowered.com/app/1107500
D&D Classics: B2 The Keep on the Borderlands
Publisher: Wizards of the Coast
System: 2E Compatible
Type: Adventure
https://store.steampowered.com/app/1225420
Pathfinder RPG - Bestiary 4 Pack
Publisher: Paizo Inc.
System: Pathfinder RPG and D&D 3.5/ OGL
Type: Accessory
https://store.steampowered.com/app/654360
Pathfinder RPG - Skull & Shackles AP 4: Island of Empty Eyes
Publisher: Paizo Inc.
System: Pathfinder RPG and D&D 3.5/ OGL
Type: Adventure
https://store.steampowered.com/app/1137950
Starfinder RPG - Signal of Screams AP 2: The Penumbra Protocol
Publisher: Paizo Inc.
System: Starfinder
Type: Adventure
https://store.steampowered.com/app/1112660
Starfinder RPG - Core Rules
Publisher: Paizo Inc.
System: Starfinder
Type: Core
https://store.steampowered.com/app/790090
Call of Cthulhu: Masks of Nyarlathotep
Publisher: Chaosium
System: Call of Cthulhu
Type: Adventure
https://store.steampowered.com/app/299301
Warlock Lairs Volume 1
Publisher: Kobold Press
System: 5E Compatible
Type: Adventure
https://store.steampowered.com/app/1098970