The default routes of MSTS were replaced by Indian geography. While the track physics were sometimes buggy (often leading to "derailments" due to poor track laying), the immersion was unmatched for the time.
: Get the latest stable release from the official Open Rails website. MSTS with Indian Railways Add-ons -Pre-installed-
Understanding the manual installation process helps you appreciate the value of a setup. A typical manual setup requires: The default routes of MSTS were replaced by Indian geography