Jacob

Gamersaurus is absolutely incredible at making open sandboxes, and encouraging character creativity. His worlds have few, if any, rails in them and he doesn't get so wedded to his story creations so as to harm player agency. Instead, he knows his world and his NPCs, so he "recalculates" the world on the fly as players make choices. Normally a small action has a small effect, but sometimes the dice and the players take the story off in strange new directions, and he follows it with aplomb and creativity. He encourages rich character design, working with backstories and mechanical choices to make them worthwhile and feel "real" within the world. For long-running campaigns, he encourages continued contribution, posting snippets of story between sessions and encouraging players to write their own stories to integrate into his world. As an example, in one game he introduced an NPC with an oddly unsettling personality quirk, created on the fly to give him depth. My group latched onto this NPC and created a whole multipart story about him following our brief encounter as he moved through the world and followed his own storyline, even though we never intersected with him again. His worlds not only accept this kind of collaborative storytelling, they encourage it. I have played a lot of role-playing games across the decades, and Gamersaurus is my hands-down favorite. I have played in many games with him, and will likely play in many more.