Heya. Thanks for the question! You've purchased it previously - is it now showing as an issue for you to download the current versions?
Regarding the remastered Realm 2, the last 35% or so remains unchanged. We overhauled the quality part of the way through development, and after completing Realm 2, we brought the first 65% up to the quality of the end of the Realm. There is a noticeable change with regard to the image quality, and we completely overhauled the animations and added a few new ones.
Happy New Year! :)