BLOOD KNIGHT GAIUS is one of those perfect little OSR modules. Settle into your chairs around the table, lay your drink-stained character sheets before you, and stare up at the towering GM screen as candles of red wax are lit.
The concept is immediately strong; a sect of monk-like vampires feed only on those who search for them and fail in honorable combat. If you win, you take an inordinate amount of money back home, and if you fail, well... you knew the risks. It effortlessly combines the tone of spooky-Dracula vampirism and old martial arts film and anime.
The layout, graphic design, and art of the module is both simple and impeccable, the scantone quality of some pages and towering silhouettes of its primary foes adding much to the mood.
Situations present themselves that don't necessarily have to be resolved through combat, making for a complex OSR experience. The snippets of lore and little touches present throughout are very evocative and should be shown to the players at any opportunity.
It's really good, basically. I love thematic, punchy modules like this one. Ascend the mountain and challenge BLOOD KNIGHT GAIUS, for the night is long, and glittering gold awaits behind a cloak of stars.