I did not expect to find this gem in the Software Manager. I don't normally like top down rpgs or rogue likes but WOW. This game is from what I can see, almost perfection. Give it a shot and get sucked in.
This is no old game, this is an actively developed, highly refined, extremely detailed, yet easy to play, at the same time. Turn-based keyboard game relying upon strategy, rather than reflexes. No mouse needed, nor much hardware power. If you like D&D, you will like this.
The Mint repo contains an outdated version. Check crawl.develz.org for instructions on adding their own repo with up to date versions.
One of the best in the genre. Funny how such a simple game can possess so many for so long.