Best free "editor included" games

Some games give players the tools to become developers themselves, without requiring a programming degree or three cups of coffee. Many titles include a free built-in editor that lets you create and customize new content. Depending on the game, you might design new platforming levels, build maps for real-time strategy battles, create puzzles, or even invent entirely new challenges. It’s a great way to squeeze more life out of a game once you’ve mastered the original content. And who knows? Your carefully designed masterpiece might be brilliant—or completely impossible to finish. Either way, someone else will have to suffer through it.