New Content in Persona 5 Royal
* New character and party member named Kasumi
* An entirely new school semester has been added, expanding the story alongside a new Palace
* The new 'Thieves Den' feature lets you visit a huge room full of unlockable bonus content at any time through the pause menu. You can use in-game currency to unlock things like artwork, character models, cutscenes, and music
* A number of brand new animated story cutscenes
* A whole new location called Kichijoji is yours to explore, and it's bigger than any other real world location in the game
* Kichijoji has a club that you can visit with party members, opening up new social and bonding events
* Kichijoji's club features a darts minigame that enhances the effects of baton pass for each character
* Kichijoji's club also has billiards. There's no actual minigame, but choosing to play billiards strengthens your relationship with every available party member by a small amount
* Kichijoji has a jazz bar that can grant party members level ups and stat boosts
* Kichijoji has a temple where you can permanently increase Joker's SP through meditation
* Kichijoji has a number of shops that offer new services and items
* Two brand new confidants with their own perks
* Akechi's social link route has been completely overhauled, slots differently into the story
* Some confidants (particularly party members) have additional social scenes
* New events, such as holidays and additional character scenes, have been added to the calendar
* New Personas
* New third form for each party member's Persona
* New enemies
* New weapons
* New armour
* New accessories
* New items
* Two new story endings
Gameplay Additions in Persona 5 Royal
* The Phantom Thieves now have powerful 'Showtime' attacks -- basically tag-team super moves. They're unlocked one by one as the story progresses
* All Palaces have been reworked to some degree, although largely they remain the same in terms of layout
* Some Palaces have completely new areas
* Joker now has a grappling hook that lets you access new areas in dungeons
* The grappling hook often leads to secret locations that house 'Will Seeds' -- there are three Will Seeds to find in each Palace
* Each time you find all three Will Seeds in a Palace, you'll be rewarded with a unique accessory
* Will Seeds also restore a bit of the party's SP
* All Palace bosses have been reworked in some way, either with additional mechanics or phases
* Some Palaces now have additional boss-like enemies and encounters
* Mementos, the randomised dungeon that you can visit when you have free time, has been expanded quite significantly -- floors can be bigger and there's more room for exploration in general
* Mementos now has a shop that sells exclusive goods in exchange for 'flowers' -- collectables that you find while exploring
* A new 'stamp' system has been added to Mementos. Stamps can be found on each floor, and you can spend them on three different bonuses: more exp, more money, and more items. Once activated, these bonuses are permanent, unless you decide to reset them
* There are new side quests to complete in Mementos
* Rare, unstable shadows can now appear both in Palaces and Mementos. On death, they explode, dealing big damage to all other enemies
* The Velvet Room now offers special optional battles that you can take part in for various rewards (this is also where DLC battles take place)
* The Velvet Room can now go into a random 'alarm' mode, which powers up persona fusion and other services, but may also result in unexpected fusion results
Gameplay Adjustments in Persona 5 Royal (Dungeons and Combat)
* Ammo now restocks after battle, making guns way more valuable across dungeon runs
* Some Personas have been rebalanced both in terms of stats and available skills
* Some enemies have been rebalanced both in terms of stats and available skills
* The baton pass mechanic has been expanded and is available to all party members from the beginning
Gameplay Adjustments in Persona 5 Royal (Everyday Life)
* The calendar has been reworked in places, allowing for more free time and additional opportunities to interact with your confidants
* Morgana doesn't tell you to go to bed quite so much -- you generally get a lot more free time at night, even if you can't leave Leblanc
* 'Assist' mechanic gives you recommendations on which confidant to visit and which stat to improve
* Confidants can now call you after you hang out with them, giving you an additional dialogue choice and therefore another opportunity to strengthen your bond with them
* Some confidants have reworked perks
Other Additions in Persona 5 Royal
* Graphical enhancements on PS4 Pro
* New opening movie
* New main menu screen
* New dialogue text font in the localised release
* Some dialogue windows have new visual effects
* New and additional character portraits in conversations
* Around 30 new music tracks
* New weather effects have been added depending on the time of year in-game
* New Game Plus now carries over additional bonuses, like HP and SP increases
* A completely new Trophy list, separate from Persona 5's