In addition to the usual downloads, there's a 50% off coupon for the hardback core rules and an original DS9 Uniform and Elite Services pack for the free to play Star Trek Online available in the tiers.
The sun is almost out of power, the moon is gone, and magic is dominant.
There's an Old School Gold bundle that has the likes of the ENnie-dominated Trilemma Adventures Collection, sci-fi horror Mothership, Golgotha and other popular titles.
The Savage World of Flash Gordon is a Kickstarter 2017 success and is based on Alex Raymond's original comic with nods to the 1980s movie too.
Shadowrun 6e is out, and to mixed reviews. That means we should be alert for cheap Shadowrun 5e deals from Catalyst Game Labs.
RPGs tend to grow by word of mouth. Perhaps Monte Cook needs some early Invisible Sun adopters on board to get those recommendations flowing.
In total, there are 26 ebooks worth £165.74 available for £18. They're available in ePub, mobi and PDF formats.
Fellowship is an RPG without the usual gamemaster position. Instead, one of the players takes the role of The Overlord and becomes a Threat to the World.
The Bundle of Holding has two different The Dark Eye bundles. The Dark Eye is a hugely popular RPG in Germany which doesn't seem able to pick up the traction it deserves elsewhere.
Humble raises money for charities with each deal, and this time the Book Industry Charitable Foundation is getting a slice of the action.