Playing PS3 with Ps4 and Ps5 Controllers - Yes they work
Yes it is possible to play your Ps3 games on your Playstation 3 using a Dual Shock 4 or a Dual Sense controller. You can even do this wirelessly.
There are only a few things that do not work.
- The Ps Button will not work so keep a Ps3 Dual Shock 3 or Sixaxis controller handy
- Rumble/force feedback is not working
- The motion control from Sixaxis support on a real DS3 controller also does not work.
- pressure sensative buttons will also not work
There are a few games that are not fully compatible with the Dual Shock or Dual Sense controller.
I found the list below online so I am just linking to it directly:
https://www.resetera.com/threads/how-come-we-cant-fully-use-a-dualshock-4-on-a-ps3.14070
Not Compatible
Armored Core 4 (Works for user interface navigation but offers no control during combat)
Armored Core for Answer (Same as Armored Core 4)
Batman: Arkham Origins Blackgate - Deluxe Edition
Bloodrayne: Betrayal (Only detects Start button and Analogic)
Burnout Crash
Castlevania Lords of Shadows
Disney Universe
Ducktales Remastered (Only detects Start button and Analogic)
Gran Turismo 5 (Works for user interface navigation but offers no control during races)
Gran Turismo 6
Jak and Daxter Collection (Only detects Start button and Analogic)
LA Noire (Works for all gameplay except driving segments)
Metal Gear Solid 2 HD
Metal Gear Solid 3 HD
Minecraft Playstation 3 edition
Ratchet & Clank: All 4 One
Ratchet & Clank: Full Frontal Assault
Ratchet & Clank: Into the Nexus
Resistance 3
Resonance of Fate (everything works except for the left analog stick which is necessary)
Saints Row: The Third
Saints Row IV (Analog sticks only work, buttons don't)
Tears to Tiara II : Heir of the Overlord
Telltale's "The Wolf Among Us"
Tom Clancy´s Splinter Cell HD Trilogy (Makes sense, actually. Since you need the rumble to lock pick on doors).