- Otto and the Ancient Worlds Demo Stream -Jun 15, 2020 - Community AnnouncementsCome watch the game developers of Otto and the Ancient Worlds play the demo here and on Twitch! https://www.twitch.tv/obviousgravity https://www.twitch.tv/obviousgravity https://www.twitch.tv/obviousgravity https://www.twitch.tv/obviousgravity https://www.twitch.tv/obviousgravity https://www.twitch.tv/obviousgravity