My favorite one is Clickteam fusion, wich one is you're favorite?
Twine. I made a bunch of successful games with it.
If I wanted to use it to make a game? Godot.
In general? Source. So much of my early teenage years were centred around things made in that engine.
RPG Maker (just kidding)I know it's a bit plain, but I really like Unreal Engine at the moment, it's nice being able to use it not only for game making, but for real-time rendering of my models and stuff.