Every year, the rogue-like development community gets together and puts the walk to the talk. It’s called the 7 Day Rogue-Like Challenge, and it is awesome!
My entry for the 2009 7 Day Rogue-Like challenge was Excitable Digger. Inspired by Dwarf Fortress, a notoriously complex Rogue-Like game, Excitable Digger focuses on mining in search of precious rocks and gems.
Excitable Digger was built using the libjsci library for all display elements.