- Visit cryptrun.lostdecadegames.com in a modern browser.
- Play through the cemetery dungeon.
- At the Game Over screen, copy the text in the “Challenge URL” input box.
- Send that URL to a friend via email, Twitter, or carrier pigeon.
Your friend will play the exact same procedurally-generated dungeon you played, and your two scores are compared at the end. Instant bragging rights!
There's also a video tutorial explaining this feature. Challenge a friend!