Old-School Essentials or OSE is an adventure game of exploration, danger, monsters, and magic. The game is intentionally rules light, putting the focus of play on imagination, improvisation, and fun. Published by Necrotic Gnome, the rules are optimized for ease of use at the table, with meticulous attention to wording and layout clarity. What's more, Old-School Essentials is 100% compatible with the classic Basic/Expert Dungeons and Dragons game from 1981, the most popular edition of the game among connoisseurs of the old-school.