Animal Crossing: Happy Home Designer has never been released for PC, so it has no PC system requirements. It came out on Nintendo 3DS. Released in 2015.
There is no emulator for Nintendo 3DS that this site will point you at.
Platforms: Nintendo 3DS.
System requirements for the game Animal Crossing
System requirements for the game Animal Crossing: Wild World
System requirements for the game Animal Crossing: City Folk
System requirements for the game Animal Crossing: Amiibo Festival
System requirements for the game Stardew Valley
System requirements for the game Hitman
System requirements for the game Garry's Mod
System requirements for the game Don't Starve Together
