Anyone who grew up in the 90's may remember Transport Tycoon - a game similar to Sim City 2000 and Roller Coaster Tycoon (Chris Sawyer, who created TTC, also created RCT). The objective of the game is fairly simple by today's standards: control a transport company to make more profit than your rivals. Fans of the original should be happy to hear that the OpenTTD project has been ported to Android, and this time around, there's even multiplayer support.
The bad news is that it's still an early release, so it's not without kinks. A fair number of users can't get the app to run at all, and some users have also had trouble getting sound to work.