Grumpy Gorilla Publications is a gaming company serving tabletop enthusiasts with games, accessories, and products designed to support immersive play. Its flagship offering is Rosebyrne Manor, a choose-your-own-adventure board game with related expansions and a growing range of themed items. The Rosebyrne collection also includes resin dungeon tiles, 3D-printed figures, and scenery and accessories for building richly detailed gaming environments. The brand plans to offer downloadable quests, characters, fiction, and other materials connected to the game.

Beyond tabletop gaming, Grumpy Gorilla Publications sells Grumpy Gorilla Rations, a range of artisan ground coffee. The coffee is hand-blended and available as a four-bean classic blend or in flavoured varieties, positioned as an adventurous companion for gaming sessions and everyday routines. The store also carries Magic: The Gathering products, including single cards, spin-down dice, vintage sealed items, Commander decks, bundles, and Secret Lair boxes. Through its online shop and Grumpy’s Blog, the company also shares gaming-related content, including articles about role-playing characters and tabletop combat.