Overlord Materials

As of now, Overlord has the following materials:

1. Light Novel Volume 1-9. Vol 10 will be released somewhere at the first quarter of year 2016. 
2. Anime Episodes 1-13 (23 min. each episode). Covers Volume 1-3 of the light novel.
3. Anime Special Episodes 1-8 (3 minutes each episode). Also known as "Pure Pure Pleiades". A spin-off story where Ainz accidentally used an item called [Total Maniac] which temporarily removes his "automatic mental check" as an undead.
4. Anime Previews 1-13 + Commercials + BD/DVD Bonus Sales Video
5. Official English Translation by Yen Press. Volume 1 will be released on May 24, 2016.
6. Drama CD1 (released with Volume 4) and Drama CD2 (released with Volume 6)
7. Manga Volume 1-2. Covers Volume 1-2 of the light novel.
8. Manga Bonus Chapters 1-2. The first one (chapter 7.5) features the floor guardians discussing the anime adaptation. The second one is a promotional side-story called "Three Women Are Enough For A Drama". It's about Albedo inviting Shalltear to discuss an important matter. Aura tagged along because she was asked by Demiurge to keep an eye on the two to prevent them from doing anything stupid. When asked what was Albedo's problem, she complained her armor [Hermes Trismegistus] was not designed like a bikini chainmail.
9. Manga Volume 1 Supplementary Story. Short story included with the 1st volume of the manga.
10. Web Novel Volume 1-9 (Part 1). End of  web novel part 1.
11. Web Novel Part 2 (Part 2). Continuation of the web novel.
12. BD/DVD Volume Bundle 1-6. Include a lot of things. Check the table below.



Volume	Date	Extras
1	09/25/15	Storage box, original novel, booklet, audio commentary, SD character mini bonus, clean opening, clean closing, preview notices
2	10/28/15	Drama CD 1, booklet, audio commentary, SD character mini bonus, promo collection, preview notices
3	11/25/15	Drama CD 2, booklet, audio commentary, SD character mini bonus, commercial collection, preview notices
4	12/25/15	Original novel, booklet, audio commentary, SD character mini bonus, preview notices
5	01/27/16	Soundtrack 1, complete book, booklet, audio commentary, SD character mini bonus, preview notices
6	02/24/16	Original novel, soundtrack 2, booklet, audio commentary, SD character mini bonus, preview notices



13. BD/DVD Bundle 1 Bonus Side-Story. A side-story about a Death Knight entitled "Emissary of the King". Preview can be found here.
14. BD/DVD Bundle 2 Bonus Audio Drama. The third installment of audio dramas.
15. Collaboration Works: Yuusha (Maoyuu Maou Yuusha) & Ainz (Overlord).
16. "Sugar and spice and all that's nice route". A short shounen-style alternative story of Overlord where Momonga was transported to New World 200 years prior the main storyline. This time, instead of sitting inside the Throne Hall, he went outside and checked the fireworks finale. He was alone and Nazarick wasn't transported with him. Then he met a person named "Inberun".

Sources:

• http://overlordmaruyama.wikia.com/wiki/Thread:20752
• http://www.fandompost.com/2015/06/30/japanese-overlord-anime-dvdbd-releases-scheduled-with-bonus-mini-episodes-more/
• http://overlordmaruyama.wikia.com/wiki/User_blog:Shaldemar/Overlord_material_in_chronological_order