Oh I see. Well, for making scenes and maps through art programs I could recommend checking this pixelart software list curated by Lospec.
As for game-making engines or so, that's out of my field so I couldn't really provide you proper info on that matter. Perhaps check out Godot? Here's a list of resources from the Gamedev subreddit wiki. It covers several areas but including game engines.
I'm looking forward to anything you might make with these, cheers!