What kinds of D&D collectibles does The Acaeum cover?

The Acaeum is a Dungeons & Dragons RPG collectibles database. It covers five main collecting categories: Rulebooks & Sets, Modules, Periodicals, Miscellaneous, and The Rares. For each, the site aims to provide printing information, cover scans, and estimated values, so the material is meant for collectors researching physical items rather than for players looking up game rules.

The five collecting categories

The site's navigation lists these sections directly, which makes them the clearest guide to what it covers:

• Rulebooks & Sets — core rulebooks and boxed sets, the foundational items most collections are built around.
• Modules — published adventure modules, a category where printings and cover variants matter a great deal to collectors.
• Periodicals — magazines and similar serial publications tied to D&D.
• Miscellaneous — items that don't fit the other categories but are still collected.
• The Rares — the scarcest and most sought-after material, separated out because of its status among collectors.

What the data actually includes

The site describes its purpose as providing "printing information, cover scans, estimated values, etc for the D&D collecting hobby." In practice that means each entry can help you answer questions like:

• Which printing is this copy?
• What does the cover of a given printing look like?
• What is it roughly estimated to be worth?

Because printings and covers are central, the database is most useful when you are trying to identify or compare a specific physical item you own or are considering buying.

What it is not

The Acaeum is a reference for collecting, not a rules resource. If you need how a spell works or how a module plays at the table, this is the wrong tool. Its value is in identification, printing history, and value estimates for physical D&D products.

How to use it

Start from the category that matches your item — a boxed set goes under Rulebooks & Sets, an adventure under Modules, and so on. If you are unsure whether something is genuinely scarce, check The Rares section, since that is where the site groups its hardest-to-find material. The site also provides a search function, which is the fastest route when you already know the title you are researching.