[Android] Free - Traffix: Traffic Simulator, Railways - Train Simulator @ Google Play

Control the traffic flow by deciding when the cars can pass and avoid crashes! Click on the traffic lights to change their colors and make sure the drivers don't get mad. You are the king of the highway, but you must act fast be keen to detail if you want to succeed.

Railways - Train Simulator

Mind the gap and start managing your railways through this strategic journey! All aboard! This train is ready to depart!

Both have been free before, Traffix was posted in May and Railways last year.