The core rules are in OSRIC, and that’s usually free, available here to be handy and with $70 worth of downloads.
RPG Worlds: Grow your library and support Kobold Press and friends
Right now, presumably months (or more) that game engine is ready to look at, you can boost your library for current systems and support the publisher and allied third parties by investigating the Humble RPG Worlds bundle.
Alternatives to D&D race into the Bundle of Holding
It’s rare to see the Bundle of Holding so busy, but it’s unusual times in the tabletop RPG world – and in the marketplace of games.
One GM and one player RPG: Beowulf – Age of Heroes bundles victories, wyrd and heroes into a discount deal
As studios like Handiwork look to decouple from 5e and investigate their alternatives, we might see more of this; quick bundles of ‘days before’ content put up on offer.
Playtest Zero bundle: Showcase of indie games from Thomas Manuel
Designers arisia, Caro Asercion, goobernuts, KTPie, Takuma Okada, and Zuhayri Mohamed have all contributed DRM free material to the deal which offers $24 worth of indie content for $15.
RPG publishers offer alternatives to 5e: Non-OGL Fantasy bundle
As you’d expect, none of the RPGs in the bundle is based on the Open Game License (OGL).
Game Designers’ Workshop’s 80s classic RPG 2300 AD bundles an offer
Specifically, 2300 AD is set 300 years after the Twilight War, and you can grab it between now and Monday the 23rd from the Bundle of Holding.
Vaesen and Free League’s Forbidden Lands in bundle? You betcha
The offer runs until about the 19th, starts with a Forbidden Lands card deck and scales up to a 10-item £14.55 tier. At that top end, there are over £130 worth of downloads.
Be the baddie! Bandit Camp kicks off 2023 with a Wicked Ones bundle
This new bundle has all the current game line, and there’s only one tier, too, with no threshold price to tackle. The catch? It’s over by January 16th.
A second chance: Fate Worlds and Toolkits offer
Evil Hat Productions’ rightly popular Fate system is included along with Fate Cthulhu, and a host of other worlds.