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The '''PlayStation 4''' (PS4) is an eighth-generation console produced by Sony Computer Entertainment on November 15, 2013 , and retailed for {{Inflation|USD|399.99|2013}}. It is the first PlayStation console to use the [[wikipedia:x86|x86]] architecture, a semi-custom 8-core AMD Jaguar CPU at 1.6 GHz. One of the cores is utilized separately only for low-power, background tasks. The CPU shares its place on an APU chip alongside a semi-custom AMD GCN Radeon GPU supported by 8 GB of GDDR5 RAM at 2.75 GHz, while 256MB of DDR3 RAM is used only for background tasks.

: A compatibility layer that can run 360 games ingame; of the lot, only 4 are considered playable according to the compatibility list.<ref>[https://docs.google.com/spreadsheets/d/1vebgZawcNhdZnGPaSuWrC6wo9OpR1miz/edit#gid=438411959 Community Maintained Spine Compatibility List] from latest Spine release</ref> In a stark contrast from other closed-source emulators, Spine is Linux-exclusive; the creator has opted not to release the source code out of caution for a Windows-exclusive variant emerging out of his work,<ref>[https://www.reddit.com/r/emulation/comments/pkc8oe/spine_ps4_emulator_v20210901_released_with/hc3coog/ devofspine] on Reddit. "I wouldn't mind open -sourcing it at some point in time but there are several things that stop me from doing this in the near future: a) there are some parts in the code that are a mess and I wouldn't feel comfortable releasing them for public consumption, b) I enjoy the freedom to develop it in the way I want to, c) I would be a bit afraid of losing control, open source brings with it a risk of forks for example and I wouldn't like to see my work used to do for example a Windows exclusive variant, and d) PS4 is still a current -gen console." (Edited)</ref> despite the fact that there is already interest in getting it working through WSLg.<ref>[https://github.com/microsoft/wslg/issues/445#issuecomment-921119545 Spine PlayStation 4 emulator does not work in WSLg with GPU enabled] issue at the WSLg repository (#445). GitHub. "no need to close the issue, we will use this to track the GPU acceleration issue. Unfortunately, I don't have access to PlayStation firmware and thus am not able to repro, but we will see what we can do to investigate this, thanks!"</ref> Its authenticity was verified by lead Orbital developer AlexAltea.<ref>[https://www.reddit.com/r/emulation/comments/bz4ikp/orbital_a_playstation_4_emulator_that_is/eqq6lxt/ AlexAltea] on Reddit. "I've analyzed the Spine demo in IDA Pro (reverse engineering tool), and everything checks out. It's a very early release, with lots of unimplemented parts, but it's real. More importantly, we have tested it locally and it works."</ref>

: A compatibility layer for the PlayStation 4. It can show the logos in Nier: Automata and ran its first commercial games, ''We are Doomed'' and ''Sonic Mania'' in February 2020. It can only run homebrew tests as of June 2022. Appears It appears to be only a side project to test 3D graphics and may or may not become anything serious. As of June 2022, GPCS4 is now a one-man project.

: A private project being worked on by one of the original developers of [[RPCS3]], DH. Little is known about the project at this time, but what we do know is that it's expected to run on Unix-likes, and can boot PS4 games without graphics.<ref>[https://www.reddit.com/r/pcgaming/comments/cxx5h3/we_are_team_rpcs3_the_playstation_3_emulator_we/eyoqzes/ DH] on Reddit. "If you have unixUnix-like OS, I can send you binary and you will able to run any game for PS4 and see many different errors for each (without graphics of course)"</ref> The GitHub repo hasn't been updated since 2016, and it appears to only exist as a placeholder until the project is released. It is still being worked on although it is in the early stages.<ref>[https://www.reddit.com/r/emulation/comments/ppffdy/rpcs4_ps4_emulation_preview_of_current_progress/ RPCS4 progress update] on Reddit. "DH, RPCS3's founder, has permitted to share this quick progress update of his PlayStation 4 emulator."</ref>

Taito's Dissidia Final Fantasy Arcade is the only arcade game that runs on PS4-based hardware. This game runs on a PS4 kiosk demo unit which and the hardware is identical to regular retail PS4 and could be converted to regular retail mode. An extra I/O board is attached to the PS4 via a USB port.