Launch Paradox in Roblox. Find the gear (settings) icon on the top of the screen. Click on it, and go to the Codes menu. Now select the code you want from this list and paste it into the code box.

Image Source: Roblox Corporation via Twinfinite. So, there you have it. Hopefully, this helped to clue you in on the latest King Legacy codes to help nab you some free cash and gems in Roblox.