Old School Essentials - Starter guide
What is Old School Essentials?
In 1981 a red box appeared with a red dragon on the lid, and a whole generation learned from it what a dungeon was. Old School Essentials is that game, word for word in its rules and yet rebuilt from the ground up: the Basic/Expert edition of Dungeons & Dragons, stripped of forty years of accretion, reorganised and set so tightly that every rule fits on a single open spread. Not a nostalgia piece but a working tool.
It is the work of Gavin Norman, who published it in 2019 through his own Necrotic Gnome. Netherbook sells the Classic Game Set: five small hardcovers in a box, with a cover painted by Erol Otus, the artist of the original 1981 box. That is not a coincidence; it is a signature.
How does the system work?
Your hero has six ability scores, a class and a level from 1 to 14. You fight with a d20 against your opponent's armour class, through a table or the optional ascending variant. You dodge danger with five kinds of saving throw: against death, against wands, against paralysis, against breath and against spells. A session rarely needs more rules than that.
The first hallmark is that race and class are the same thing. An elf is a class, a dwarf is a class, so is a halfling; they sit beside cleric, fighter, magic-user and thief. That gives you seven sharply drawn heroes and no construction kit.
The second hallmark is how you grow. Experience comes mainly from treasure you carry home safely: one gold piece is one point. Killing a monster earns almost nothing. The game therefore rewards sneaking, bribing and walking away, and punishes the table that fights every room.
The third hallmark is the magic-user who memorises spells. One night's sleep, a fixed number of spells, and when they are gone, they are gone. A level 1 magic-user has one spell and a dagger, and that is exactly the tension the game intends.
What do you need to start?
The Classic Game Set holds five booklets: Characters, Magic, Adventures, Monsters and Treasures. Together they are the complete game; the players keep the first two at hand, the referee the other three, and nobody waits for a book. The endpapers are printed with the tables you need most often.
Beyond that you need a set of polyhedral dice (the box does not include them), pencils, graph paper and an adventure. The booklets contain no starting adventure; our OSR collection has plenty, and Dolmenwood is a complete world on the same rules.
Who is this game for?
Referees who want to look things up fast and players who are willing to die fast. Tables who want to learn the game underneath Dungeons & Dragons. Anyone who wants to know what OSR means before buying Dolmenwood, Shadowdark or one of the hundreds of adventures written for these rules: this is the mother tongue.
It is not for players who want to build a hero. Seven classes, few choices, and a level 1 character who dies to a single blow. Nor is it a narrative game; there are no rules for social scenes, no moves, no meta-currency. What happens, you talk out.
How does it compare to other systems?
Compared to Dungeons & Dragons 5e, Old School Essentials is the bare version of the same idea. The same classes, the same d20, but no skills, no feats, no bonus actions, and a hero who at level 1 has a few hit points instead of a list of abilities. 5e makes your hero strong; OSE makes the world dangerous.
Compared to Shadowdark, built on the same source, OSE is the faithful version and Shadowdark the modern one: Shadowdark borrows ascending AC and advantage from 5e and adds torches that really burn out. To see the two side by side, read our comparison Shadowdark vs Mörk Borg vs Old School Essentials.
Compared to Dolmenwood, also from Necrotic Gnome, OSE is the ruleset and Dolmenwood the world. Dolmenwood expands the classes and the mood, but under the hood it is this game. Our history chapter on the Old School Renaissance tells how that movement came about.
Where do you start?
Read the Adventures booklet first, not Characters. It explains how a dungeon works: turns, light, encounters, morale. That is half the game.
Let the players make their hero in ten minutes, with the dice and without deliberation. Give them a map of a small dungeon, a torch and a reason to go down. And tell them beforehand that heroes die. A player who knows that plays carefully, and playing carefully is what this game is about.
Recommended products at Netherbook
The Old School Essentials Classic Game Set is the complete game in five booklets.
If you want a world to go with it, the Dolmenwood Player's Book plus the Campaign Book is the richest one built on these rules. If you want the modern relative, look at Shadowdark. Everything we sell in this genre is in the OSR collection.