Extended Architecture for Timberborn is a free mod designed for Windows users that significantly enhances the gameplay by introducing new structures. This modification includes the addition of unique arch designs, specifically Arch 4x1 and Arch 5x1, which allow for greater creativity in building and expanding within the game. The mod is tailored to integrate seamlessly with the existing game mechanics while providing players with more options for architectural design.

The mod has been re-uploaded with permission from the original author, incorporating specific variants for Iron Teeth players. This ensures that both factions within Timberborn can benefit from the added structures. By utilizing this mod, players can explore new strategies and aesthetics in their construction efforts, making for a richer gaming experience.