Okay, since my efforts to inform are always nitpicked, I took time to rework the Exclusive lists I compiled, and provide further clarification with this post. While Gematsu is my primary source, I don't care for their "Retail" and "Download" labels. That doesn't really mean anything in 2020. Instead, I broke the exclusives lists into three categories:
(1) Exclusives Launching on this gen
These are games developed for the new consoles, or simply releasing after their launch. Some may also have versions releasing on the previous gen, too, but these aren't older exclusives from the previous gen. These include all effective exclusives: Full, Platform, Console, and Timed exclusives.
(2) Indie Exclusives Launching on this gen
Same as above, but smaller titles that are self-published by developers who only publish their own games, or are otherwise marketed as indies at game expos, by the press, or on Steam (when a PC version exists).
(3) Previous Gen Optimized Exclusives
These are games which did (or will) appear on the previous gen, including possible the PC, not a console, prior to the newest console release dates (PS5= Nov-12, XSX = Nov-22), but which have already been confirmed with an optimized version for the new consoles. Some may not yet be released.
The PS5 doesn't have a single exclusive they have named as part of their "PS5 Upgrade" program confirmed from the previous generation. Their only exclusive PS5 Upgrade game is the indie release
Kena: Bridge of Spirits which is set for release after the PS5. Thus, none of the PS4's exclusives are declared to be optimized versions. Rather, as they've previously announced, these will just be PS4 games running in PS4 mode on the PS5. This is the key difference. If you wish, you can read more comparing upgrade promises between Microsoft and Sony by visiting the link below. The Xbox has roughly double the game count:
https://forums.sherdog.com/posts/161761352/
With that clarification for category #3 out of the way, some have also stressed PS4 exclusives will be playable on the PS5 at launch via PSNow. This may be, but in reality, many of their most popular exclusives don't appear on PS Now, and one has to research to know if that game can be downloaded at all. Most cannot be downloaded. Otherwise, you must cloud-stream. This suffers from latency issues like lag. Notes comparing services:
Xbox Series X & Xbox Series X Exclusives
XSX/XSS Gen Exclusives
- As Dusk Falls (Microsoft)
- Avowed (Microsoft)
- Call of the Sea (Raw Fury)
- Everwild (Microsoft)
- Fable (Microsoft)
- Forza Motorsport 8 (Microsoft)
- Gears Tactics (Microsoft)
- Halo Infinite (Microsoft)
- Hello Neighbor 2 (tinyBuild)
- Martha is Dead (Wired Productions)
- Project Mara (Microsoft)
- Senua's Saga: Hellblade II (Microsoft)
- S.T.A.L.K.E.R. 2 (GSC Game World)
- State of Decay 3 (Microsoft)
- The Gunk (Thunderful)
- The Medium (Bloober Team)
- Warhammer 40,000: Darktide (Fatshark)
XSX/XSS Gen Indie Exclusives
- 12 Minutes (Annapurna Interactive)
- Echo Generation (Cococucumber)
- Exomecha (TwistedRed)
- Dead Static Drive (Fanclub)
- Exo One (Exbleative)
- Lake (Gamious)
- Last Stop (Annapurna Interactive)
- Mad Streets (Craftshop Arts Inc.)
- Orphan of the Machine (Dynamic Voltage)
- Sable (Raw Fury)
- Scorn (Ebb Software)
- Shredders (I-Illusions)
- Song of Iron (Escape)
- The Artful Escape (Annapurna Interactive)
- The Ascent (Curve Digital)
- The Big Con (Mighty Yell)
- The Falconeer (Wired Productions)
- Tunic (Finji)
- Unexplored 2: The Wayfarer's Legacy (Big Sugar)
Previous Gen XSX Optimized Exclusives
- CrossFireX (Grounded)
- Forza Horizon 4 (Microsoft)
- Grounded (Xbox)
- Phantasy Star Online 2: New Genesis (Sega)
- Sea of Thieves (Microsoft)
- Second Extinction (Systemic Reaction)
- Tell Me Why (Microsoft)
- Tetris Effect: Connected (Enhance Games)
PS5 Exclusives
PS5 Gen Exclusives
- Astro's Playroom (SIE)
- Deathloop (Bethesda Softworks)
- Demon's Souls (SIE)
- Ghostwire: Tokyo (Bethesda Softworks)
- God of War: Ragnarok (SIE)
- Godfall (Gearbox Publishing)
- Gran Turismo 7 (SIE)
- Guilty Gear: Strive (Arc System Works)
- Horizon Forbidden West (SIE)
- Marvel's Spider-Man: Miles Morales (SIE)
- Oddworld: Soulstorm (Oddworld Inhabitants)
- Project Athia (Square Enix)
- Ratchet & Clank: Rift Apart (SIE)
- Returnal (SIE)
- Sackboy: A Big Adventure (SIE)
- Tribes of Midgard (Gearbox Publishing)
PS5 Gen Indie Exclusives
- Antarctic Base (Rexlabo)
- Bugsnax (Young Horses)
- Goodbye Volcano High (KO_OP)
- Go! Go! 5 Jigen Game Neptune: re★Verse (Compile Heart)
- JETT: The Far Shore (Superbrothers)
- Kena: Bridge of Spirits (Ember Lab)
- Little Devil Inside (Neostream)
- Maquette (Annapurna Interactive)
- Nour: Play With Your Food (Panic)
- The Pathless (Annapurna Interactive)
- Quantum Error (TeamKill Media)
- Solar Ash (Annapurna Interactive)
- STRAY (Annapurna Interactive)
- Worms Rumble (Team17)
Previous Gen PS5 Optimized Exclusives
- Heavenly Bodies (2pt Interactive)
Feel free to offer corrections where appropriate.