is it right that when im on patreon and going to download the "new" game that it tells me its only 510mb ?
There's no reason to go to my Patreon when you have the full game here (unless you wanna get the Patreon version). No updates, no base game, just the full game with all the new content. Is explained in the first sentence of this post 🤔 What's anywhere but here is the base game + updates, so yes, 500MB of update:
https://keisi-studio.itch.io/lust-age-nsfw-by-keisi/devlog/613584/how-to-update-...
EDIT: ^ This same post is in any Patreon post when I release a new update.