Double bundles at the Bundle of Holding aren’t so rare that they give me pause. A double-bundle is where we get a release on one day and then a follow-up the next.
Necrotic Gnome’s Old-School Essentials double bundle is far less common because both deals are brand new. Given that the deal includes the core rules, this is a rare oppertunity for someone who’s heard a lot about OSE and wants to dive in. Old-School Essentials is a “retelling” of favourite features of Basic/Expert D&D.
Both these OSE bundles expire on June 10th.
OSE Advanced Fantasy
These core rules are compatible with Basic D&D, full of new character options and magic, all in theme with D&D from the 1970s. It has a two-tier bundle.

Starter Collection – $7.95
The retail value of this tier comes in at $37.50.
- Old-School Essentials Player’s Tome
- Old-School Essentials Referee’s Tome
- Advanced Fantasy Reference Booklet
Bonus Collection
The threshold price started at $19.95 and will move around. If you can meet the current value you’ll unlock a further $65 of OSE downloads.
- OSE Adventure Anthologies 1-2
- Halls of the Blood King
- Holy Mountain Shaker
- Incandescent Grottoes
- Isle of the Plangent Mage
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OSE Treasures 2
Necrotic Gnome released an OSE SRD in 2020, and since then, we’ve been blessed with many quality third-party books from publishers like Swordslords Publishing, Gelatinous Cubism and Silverarm.
There’s only one tier in the Treasures sequel: OSE Treasures 2.

Old-School Treasury – $17.95
The download value of the Old-School Treasury comes to $84.
- The Shrike
- Wyvern Songs
- The Dream Shrine
- 3 Gelatinous Cubism OSE modules
These adventures harken back to classic, old-school sensibilities, plunging you into a world of weird and fantastic pulp action. Expect evocative yet concise descriptions and gameplay prioritising decisive rulings over rigid rulebooks. Not every challenge is fair, and your survival is constantly on the line.