>The old game was outdated and its structure was a total mess; its code was going to break constantly no matter what, so he's remaking it with better-looking models, animations, maps, and backgrounds, as well as a whole new, better gaming experience.
>He made all the characters, maps, backgrounds, DK characters, NPCs, animations, etc. first. With each update, he doesn't need to create any of these because all that is already created, so he only needs to export and put everything together, as well as fix any bugs reported and do other things either before the update drops for everyone or in the next update due to not wanting to make people wait too long.