A level editor is a software tool that allows users to create or modify game levels or maps. It lets players customize the design, layout, and features of a game environment to create their own unique or personalized experiences. Full definition
Play on an almost endless supply of new and exciting user generated levels, or launch the easy to use built in level editor and make and share your own levels. (cubemen2.com)
I have never been good with level editors as they are usually clunky to operate but I have to say that this one is excellent and is easy to use. (gamergeddon.com)
Our focus was to create an easy - to - use level editor for players to design their own levels. (output.games)