Overgrowth is a game by Wolfire, the sequel to their game, Lugaru. Wolfire are also the people behind the Humble Indie Bundle, who hosted the Mojam, which was done by Mojang, who made Minecraft. So there's the Minecraft connection. I have no knowledge of the game, just thought I'd post this.
www.wolfire.com for more info.
Beautifulness. Look it up.
Spawn 2 characters. Hit CTRL + P with them selected and they'll turn into players. If your controller is connected and working, it should go fullscreen when you exit the editor