jOpenTTDLib is a Java library that polls OpenTTD servers for statistics on games in progress. This includes data on the map and how all the companies are faring. On top of this functionality, the games can be continually polled and game events are generated and listeners notified.
Pac Defence is a tower defence game where the aim is to destroy the evil pacs before they can reach their goal off the side of the screen. To stop them you can choose from 17 towers to build, or enlist the pac's greatest foe, the ghost. Towers cost money, so you cannot build as many as you want, and thus you must carefully choose which tower you want to build and where you want to build it. You gain money by damaging and destroying the pacs, and at the end of each level. Additionally, towers gain level ups after inflicting certain amounts of pain on the pacs.