Sam is in charge of the graphic design and uses Inkscape.
He made a few time lapses if you're curious :
https://www.youtube.com/channel/UC8y7Tx ... rwgjYh8eEA (it's their channel)
As for animations, Sam designs the objects in parts (like body/wings/hands) with a few images (fixed wing / moving wing) and then Seth codes the animation through Game Maker.
If I recall correctly, they plan on using Spine (
http://fr.esotericsoftware.com/ ) for their next games, which is an animation software for games that helps doing automatically what Seth does by hand, and it can be used with Game Maker.
About the screen sizes, I think that Game Maker handles the stuff?
And the more pixels you have, the more stuff you see (I think). If I'm not mistaken, each object has a fixed size, meaning that having more pixels in your screen = more objects shown. BUT I'M NOT SURE.
Some talks and articles about GAME MAKING on this page:
http://www.butterscotch-shenanigans.com/p/about.htmlNot sure they updated it lately? But there's a lot of stuff.
https://www.youtube.com/channel/UC5LAVl ... CIQ/videosChannel with some of the talks that occurred in St Louis.
If it's still not enough, a google search could help you! ^^
Also, one thing the bros stressed a lot:
You should not publish your first game(s) on Android or iOS or something like that. Make a few small games and jams so you get used to the tools, and then make your nice game!

HOPE THIS HELPED!

And, welcome here!
If you like, you can introduce yourself over here:
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