A free app for Android, by Redbrick Studios.

Model Railway Easily 2: A free building and designing game. Create a railway line and start building your dream layout. Build, design, and populate your train with real-life models, such as engines, wagons, and buildings. The game is easy to play, but it will require some skill and concentration to build and populate your track with realistic 3D models.

The game environment is realistic. It is not a flat, two-dimensional surface, but a three-dimensional, curved surface that gives the game object an actual depth. It is the same for the player. The player can move around the environment, but he cannot move through it. The environment has a realistic texture, which gives the game object an actual texture and makes it look real.