Coplay: an AI Assistant that sits inside Unity to automate and eliminate tedious Unity tasks.

Unity MCP: an open-source free tool to connect your Claude Code/Cline/Cursor to Unity. See this blog for a comparison to Coplay.

Coplay MCP: an MCP server that lets you connect Cursor/Claude Code/Cline to Coplay and Unity. Consider it an upgraded version of the Unity MCP.