This is like one of the Weirdest generations in General but Backwards compatibility is getting super weird.
The Vita doesn't have a UMD drive so it can't play physical PSP games and at launch it couldn't play all Digital PSP games. Even now they're are some Exceptions, very Few though. Although the VITA does have cross compatibility whith some PS4 and PS3.
The PS4 doesn't really have backwards compatibility with the PS3, unless you count PS Now. People have said this is because the PS4 is a different architecture then the PS3.
Im not sure if it was only for Battle Field 4 but if you bought a PS3 copy of BattleField 4, you could put the Disc in a PS4. You only had to pay ten dollars more for a PS4 Digital copy of BF4. You still had to keep the PS3 disc in to Play the game.
The Xbox one is Backwards compatible with some Xbox 360 digital or Physical games through a emulator. This is as long as the Devs of an Xbox 360 game, goes back and updates the game to work on the Xbox One. Meaning 3rd party Devs probably aren't getting paid to go and support a older title because people will probably buy that title used. Props to those Devs.
The Xbox one X is getting the same treatment for Original Xbox games. This is weird because the Xbox seems like a old enough system where the majority of Xbox games should run on a emulator with out any problems.
Then there is Nintendo. Which is notorious for Not having a unified account system yet still included hardware in the 3DS and Wii U that allows it to the Read Physical DS and Wii games. The SD card on the Wii U is only for the Wii. You have to perform a system transfer for your Wii and DS games to get your Digital games on your Wii U and 3DS. If Nintendo just had a unified account system, your licenses would be tied to that. Nintendo would later release the gamecube adapter for the Wii U for Smash Bros only. You could link up two gamecube adapters to the system for 8 Players. Probably the weirdest/Dumbest preferential for the Wii U.
I thought the Switch wasn't going to have any backwards compatibility, but they updated the Switch to use the Pokken tournament controller but instead of the Pokken tournament only working for one game, like it sadly did on the Wii U, it works for all games on the Switch. This also allowed the Mayflash Gamecube adapter to work on the Switch because it was based on the Pokken Tournament controller. In Nintendo's most recent update you can use the Official Wii U gamecube adapter on all Switch games. Granted you are missing like 5 buttons and the Switch's Base only has 3 usb slots each. The gamecube adapter needs two USB slots, you can't hook up two Gamecube adapters for 8 Player games.
The Vita doesn't have a UMD drive so it can't play physical PSP games and at launch it couldn't play all Digital PSP games. Even now they're are some Exceptions, very Few though. Although the VITA does have cross compatibility whith some PS4 and PS3.
The PS4 doesn't really have backwards compatibility with the PS3, unless you count PS Now. People have said this is because the PS4 is a different architecture then the PS3.
Im not sure if it was only for Battle Field 4 but if you bought a PS3 copy of BattleField 4, you could put the Disc in a PS4. You only had to pay ten dollars more for a PS4 Digital copy of BF4. You still had to keep the PS3 disc in to Play the game.
The Xbox one is Backwards compatible with some Xbox 360 digital or Physical games through a emulator. This is as long as the Devs of an Xbox 360 game, goes back and updates the game to work on the Xbox One. Meaning 3rd party Devs probably aren't getting paid to go and support a older title because people will probably buy that title used. Props to those Devs.
The Xbox one X is getting the same treatment for Original Xbox games. This is weird because the Xbox seems like a old enough system where the majority of Xbox games should run on a emulator with out any problems.
Then there is Nintendo. Which is notorious for Not having a unified account system yet still included hardware in the 3DS and Wii U that allows it to the Read Physical DS and Wii games. The SD card on the Wii U is only for the Wii. You have to perform a system transfer for your Wii and DS games to get your Digital games on your Wii U and 3DS. If Nintendo just had a unified account system, your licenses would be tied to that. Nintendo would later release the gamecube adapter for the Wii U for Smash Bros only. You could link up two gamecube adapters to the system for 8 Players. Probably the weirdest/Dumbest preferential for the Wii U.
I thought the Switch wasn't going to have any backwards compatibility, but they updated the Switch to use the Pokken tournament controller but instead of the Pokken tournament only working for one game, like it sadly did on the Wii U, it works for all games on the Switch. This also allowed the Mayflash Gamecube adapter to work on the Switch because it was based on the Pokken Tournament controller. In Nintendo's most recent update you can use the Official Wii U gamecube adapter on all Switch games. Granted you are missing like 5 buttons and the Switch's Base only has 3 usb slots each. The gamecube adapter needs two USB slots, you can't hook up two Gamecube adapters for 8 Player games.