ADVENT
This is a small Kotlin program that I'm using to gain familiarity with Kotlin and IDEA. It implements a simple Zork- or Adventure-like text game, define by a DSL that is part of the project.
The program is created in very small steps, guided by tests in most all cases. The article series "kotlin" chronicles the development of this effort. Issues welcome, though email or Twitter will reach me more reliably. No pull requests, please.
Feel free to clone.