News: 22.08.2026: Coming back to linguistics after a long break, I am happy to present part I of a modern introduction to the world's oldest written language - Sumerian. Read more... 15.02.2026: Some thoughts on properties of straight vs. curved swords in the section on Medieval Swordfighting. 23.01.2026: Version 0.9 of the Worldbuilder project is available with Tutorials, allowing to study planets orbiting on Lagrange points. 17.10.2025: A summary of Joachim Meyer's system for fencing with the dusack has arrived in the Medieval Swordfighting section. 21.09.2025: Updates to Medieval Swordfighting, for instance a classification of guards. 09.03.2025: Enjoy a new section about Medieval Swordfighting. 07.03.2025: New teasers for our movie project Hiiden Kutsu can be watched! 05.03.2025: The website has migrated to a new hosting service - I apologize for any breakage during the transition period. 02.08.2024: Version 0.3 of the Historical Battle Simulation - is now published, taking into account the effects of terrain on warfare. 03.04.2024: The teaser for Clíodhna Episode XI 'Guardian of the Valley' is out!