Changelog since Feedback Quest 5:
TLDR:
-Added VN-style illustrations
-Added new artworks for some key items
-Added 2 hours worth of gameplay at the end of the game
-New feature: the costumes. They allow you to change the appearance of all the playable characters
Full changelog (Feedback Quest 5 was version 42, RPG Feedback Quest was version 53)
Note: For anyone who has saves from an older version of the game, those are 100% compatible with the newer updates. Any illustration added in the mean time can be seen in the picture gallery after loading your save and any costume you missed will be automatically added to your inventory.