A movie titled "KonoSuba – God’s blessing on this wonderful world!: Legend of Crimson," featuring a returning cast, composer, scriptwriter, director, and character designer, but a different studio in J.C. Staff, premiered in Japanese studios on August 30, 2019; limited advance tickets went on sale August 26. It is set to air in specific countries around the world via Crunchyroll, and will be shown one day only on November 12 in US theaters. The movie covers the fifth novel of the series.
On October 5, 2018, a spin-off, cross-over series between Konosuba, Re:Zero, Overlord, and Youjo Senki produced by Studio PuYUKAI and titled "Isekai Quartet" was announced. The Konosuba characters involved feature the main cast (Kazuma, Aqua, Megumin, and Darkness), all reprised by their original voice actors; the show began airing on the 10th of April, 2019.
The third season has been officially confirmed by Kadokawa, with the returning staff working at the new studio Drive. Also, Konosuba: An Explosion on this Wonderful World! is getting an anime release as well.