I’ve been messing around with this on and off, and it’s not near to finished.
Still, it does something, so I thought I’d start putting it somewhere public: http://hardholdr.herokuapp.com
You’ll have to forgive the terrible URL for now.
If you want to join an existing game, use the code “ZZP-G8F”.
All you can do at the moment is change your name, add skills, and modify the value of them. Soon I’ll be adding the functionality for GMs to set an obstacle for a PC to roll against.