When I say light I mean software like https://the-l0bster.itch.io/pocket-platformer , https://ledoux.itch.io/bitsy and https://jukel.itch.io/vritsy.
I don't want to make a proffesional looking game. I want something simple and usable by young kids. Also, the machines that I want to run it are usually core2duo PCs (that's why I want light software).