2025-04-22 Patch 13.1.4420Additional TorchesCost reduced from 200 Food 500 Gold → 150 Food 350 Gold.Improved version cost reduced from 700 Stone → 500 Stone.
2024-08-22 Patch 11.1.1201MongolsAdditional Torches: Tech time reduced from 90s to 60s (also applies to improved version).
2021-11-29 Season One UpdateBug FixesAdditional Torches technology no longer improves Naval units and Emplacements The cost to double produce a number of Mongol units has been fixed