It is designed to be simple and lightweight yet still capable enough to run a large library of old application and games.
Features
Single-playerMulti-playerFull controller supportSteam CloudCo-opOnline Co-opPvPOnline PvPDownloadable ContentRemote Play on PhoneRemote Play on TabletRemote Play TogetherRemote Play on TVShared/Split Screen PvPShared/Split ScreenShared/Split Screen Co-opLAN PvPLAN Co-op
RetroArch is free/open source software, available under the GNU GPL 3.0 license.
It does not contain any copyrighted material by third parties. RetroArch does not condone piracy in any way, shape or form.