Occasionally, Dovetail Games offers specific DLC for free on Steam, which sometimes adds the base game to your library if you didn't have it. 📱 Legitimate Free Mobile Options
If you are looking for a free experience, there are several official mobile games that use the "2018" branding: Train Simulator PRO 2018 - App Store Train Simulator 2018 Download Free
The original PC game by Dovetail Games was a and has since been updated to Train Simulator Classic on Steam . Occasionally, Dovetail Games offers specific DLC for free
If you already own an older version (like TS2017), the "core" engine usually updates to the latest version for free, but new routes typically require a separate purchase. Train Simulator 2018 Download Free
Generally, you must purchase the base game on Steam for around $29.99 .