It's based off the board game Talisman with 50 quests and 10 characters with "endless replayability", boasts Nomad's Greenlight page. A one-mission demo is available right now.
Talisman Prologue is a strategy-RPG. It can be pre-ordered directly from the official website, or you can pester Steam through their Greenlight bid. It's on PC November 15th.