3D Ultra Lionel Traintown was released by Sierra in 1999. It's a third person railroading game. It's sequel, Deluxe, was released in 2000. If you have one or both of these games, you're really lucky! Me, I got the game back when I was young and I had a lot of fun with it, and it became my favorite train simulation game. There's others like Lego Loco, Thomas the Tank Engine, Lionel Trains Trains-Con!, Trainz, etc., but Traintown and Traintown Deluxe are the main focus here. It may be simple, but it gets harder as the game progresses. A port was planned for the Sega Dreamcast, but was cancelled for unknown reasons.