RoCode

RoCode is an AI agent that builds inside Roblox Studio. You describe what you want in a chat, and the free Studio plugin builds it in the place you have open: maps, scripts and UI, then playtests it with a test character and fixes what fails. There is a free plan with 1 credit a day and no card, Pro at $9.99 a month, and credit packs from $4.99. Works on Windows and Mac, and you can sign in with Roblox, Google or email.