I can make incredabox mods on scratch

So if you guys don't know,in the mid 2024 in my old account (skiddles) I once announced a game that never came to be, being, super castle world,super mario world but replaced with the things in castle, the iconic mario is the character , I really wanted to make this but there was one major problem, I don't know s[UH-OH] about making games, I can make incredabox mods no sweat but castle games, I just can't