PS2 emulation on browser by play! Works on pc and Android, all games are not compatible yet, but i tried running gt4 but it got stuck at the boot screen. Remember PS2 emulation on browser is still in development , link to play PS2 emulation on browser :-
If you have a decent pc I recommend using a ps2 emulator. Pcsx2 is the ps2 emulator and you can use ds4windows to plug and play the dualsense controller. I unfortunately don't have decent pc but that would have been an option maybe. I still would like to pay for it just to support the franchise and the developers. The list of PS2 games that can be played on the PS5 is quite long, so you should look online in the PlayStation Store to see whether a PS2 game you want to download and play is compatible with PS5. For gamers that don’t want to buy and download single PS2 games, they can play select PS2 through a Sony game subscription service called
All you can do is insert a PS2 disc and see if it plays. Play PS2 Games on PS4. If you don't have a functioning PS2 or a backwards-compatible PS3, then you only have one other legal option: Play on a PlayStation 4. And if you want to play PS2 games on a PS4, you're going to have to buy them again.
Play! PS2 core support for android. I'm using the retroarch 64-bit app on my android device (S20 Ultra). I've downloaded the "Play!" Core as I want to test out the PS2 compatibility, I've gone on to the github page which lists the games compatible with the emulator as it's not many at the moment, I have a few of the games as .bin and .cue

Download BIOS for PS2 from internet and find some roms. You can play large amount of ps2 games. Here is channel that you can look what game works . Works great God of War I , God of War II , Star wars Battlefront 2 2005 , Kingdoms of Hearts and many more. But the best way is to find if your game was on Gamecube or WII the best emulator is

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can you play ps2 games on mobile