Somewhere around GYM, a new building designed for testing one's skills in combat opened up. A stone tower that seemingly reached towards the heavens with it's only direction being a bright, large neon sign above the two wooden doors at the front with the establishment's name spelled out in bubble letters. The doors would be unlocked, leaving any passerby free to enter.
Basically this is a sandbox dungeon crawler with a focus on fighting generic monsters and enemies for practise or just casual fun. I'll consider how to flesh out the idea as it gains attention.