Can I make a complex game with this tool?

Hello, I’m planning on making a creepypasta based on a haunted NES gam. Can this engine support that level of complexity? Can I make a game that has the level of depth I need?

It depends of the complexity of the game you want to make... and the level of your knowledge in ASM (assembly)

If you check the WIP and the Finished Games sections you will see what members made with the tool.