Since 2020, it also has the online video companion Casus TV, which is produced in collaboration with Tric Trac.

[6] Black Book Éditions took over in the same year, in a bimonthly – at times quarterly – mook format.

[6][10][11] Since 2020, Black Book Éditions also publishes Casus TV, an online, video-based companion to the magazine, in collaboration with the game news site Tric Trac.

[14][15][16] Laelith, a medieval fantasy setting intended to be usable with many different tabletop role-playing games, was developed through features in Casus Belli since December 1986, and was compiled in 1991 and published as a Casus Belli special;[17][18] a second edition followed in December 2000;[17][19] and a third in 2016, which was intended for use with Héros & Dragons, Black Book Éditions' French adaptation of Dungeons & Dragons' fifth edition by Casus Belli staff.

[14] Polish magazine Magia i Miecz found Casus Belli's graphic design outstanding, with great use of color and illustration, and appreciated the international scope of its news coverage.