Hood River Hobbies Frosthaven Game. Frosthaven is a stand-alone campaign in a Gloomhaven world, featuring the same game play along with some new twists centered gathering and town building. Characters from Gloomhaven, forgotten circles and Jaws of the Lion are fully playable in this game. Frosthaven is a stand-alone campaign in a Gloomhaven world, featuring the same game play along with some new twists centered gathering and town building. Characters from Gloomhaven, forgotten circles and Jaws of the Lion are fully playable in this game. Any of the new 16 characters from Frosthaven can be played in the other Gloomhaven games as well! For 1-4 players, ages 14+. 30 minutes per player game time.