All products that use the OSR Compatible logo are asked to provide a box at the start of the product similar to the following:
The recommended categories are original, classic and advanced games, to indicate the style of game that the product is targeting. Alternatively no such compatibility can be indicated and the product can be for all editions.
Note that this is only an example, and your specific format may vary. In the encounter format, armor class should be clearly described, including armor classes for an unarmored character and for a character in chain mail. Armor class may use any scale the publisher desires, as long as values are provided for unarmored and chain mail.
If movement rates are provided, the text should describe briefly how they work – for instance scale inches where 1″=10 feet underground and 10 yards aboveground, or feet where 90′(30′) indicates 90′ per 10-minute turn and 30′ per combat round. Any stats other than the basic ones, such as morale (2-12) should be described briefly with a scale.
OSR Compatible Logo, White Background:
OSR Compatible Logo, Transparent Background:
OSR Compatible Logo, Vector Graphics (.svg) contributed by Dan Hyland
Based on OSR Logo by Stuart Robertson