Clash Royale has never been released for PC, so it has no PC system requirements. It came out on Android, iOS. Released in 2016.
There is no emulator for Android, iOS that this site will point you at.
Platforms: Android, iOS.
System requirements for the game Clash
System requirements for the game Grand Theft Auto 5
System requirements for the game The Witcher 3: Wild Hunt
System requirements for the game Tomb Raider
System requirements for the game Portal
System requirements for the game Left 4 Dead 2
System requirements for the game Red Dead Redemption 2
System requirements for the game The Elder Scrolls V: Skyrim
