Welcome to the official site for Hiawathamr’s Trainz content!
Hiawathamr Trainz Add-ons is owned and operated by a solo content creator that specialises in route and session development for Trainz Railroad Simulator 2019 (TRS19), Trainz Railroad Simulator 2022 (TRS22), Trainz Simulator 3 (TS3), and all newer versions of Trainz.
Announcements

Salina Subdivision now available for Trainz
November 11, 2025
7:34 AM
Salina Subdivision now available for Trainz Welcome to Kansas!Originally constructed in the late 19th century as a key part of the Union Pacific’s expansion westward,

DLCs for TRS19 pulls into the last station
August 21, 2025
2:33 PM
DLCs for TRS19 pulls into the last station Hello everyone, As the title says, I will be discontinuing all TRS19 DLCs (including updates) starting 1st

Big Boy in the Rockies Mission Pack
August 12, 2025
7:40 AM
Big Boy in the Rockies Mission Pack for TS3 now available! Introduced in Trainz Railroad Simulator 2004 and available for all versions of Trainz was