Gamemaker Studio 1 is my main game engine. It's where I got started and which I am the fastest with. Got Gamemaker Studio 1 when it was on Humble for a dollar or so with all exports. Don't like Gamemaker 2, I'd rather switch to Godot but I'm having trouble learning it.
I've dabbled in Pico-8 and made a small game. Very fun to use, but the restrictions are too much for me personally though.
Sometimes I create games with Flickgame which some wouldn't regard as a real game engine because it's extremely restrictive. I love the colour palette and enjoy concentrating on making art. I make those games entirely on my tablet, which I find very cozy. It exports to HTML5 and you develop in your browser.