Bushi8v

PC/Online:
Cardfight!! Vanguard Area - http://cardfight-wiki.ru/cardfight-area/ (links at the bottom)
Buddyfight Area - http://cardfight-wiki.ru/buddyfight/ (links at the bottom)

Cardfight!! Vanguard plugin on LackeyCCG - http://www.lackeyccg.com/forum/index.php?topic=3187.0 (more complex installation, less popular. Only for Lackey fans)

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Emulation
Mega folder: mega (dotto) nz/#F!JgJAFS5J!1m (nothing) UvjktlUoSVGptRDlxwjQ
All passes are "redditni**ers". With a hard R.
Even if you don't know Japanese, the game menus are easy enough to understand.

ThreeDS:
Cardfight!! Vanguard - Ride to Victory!!, 2013 (JP) up to BT09, EB05, TD07
Cardfight!! Vanguard - Lock On Victory!!, 2014 (JP) up to BT15, EB10, TD13
Cardfight!! Vanguard - G Stride to Victory!!, 2016 (JP) up to G-BT04, G-CB01, G-CMB01, G-TD05

Future Card Buddyfight: Explosive Fight of Friendship!, 2015 (JP) up to BT05
Future Card Buddyfight: Aim for it! Buddy Champion!, 2017 (JP) up to D-CBT
Future Card Buddyfight: Appears! Our Strongest Buddy!, 2018 (JP) up to X-UB03

Use Citra for emulation. Can be played online with other people on the emulator. It emulates lan.
"Enable Hardware Shader" might be good to disable for Vanguard, but enable for Buddyfight. Look at what percentage the emulator is running and if there is any stutter and test. Might be different from PC to PC. Also if it is running slow make sure you have selected "High Performance" in the Power Options of Windows, it can have a huge difference.

Switcheroo:
Cardfight!! Vanguard EX, 2019 (JP) up to BT06, EB09, TD08
Emulatable with Yuzu. (Guide in the mega)

EX OST mp3 or flac; Sounds mp3 or flac (sounds include character voices)
Verno lines start from sound file 1497.
OST folder: mega (dotto) nz/#F!UoBgyApL!MkRat (nothing) MWKhW-y1WkUcFbeaA

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Mobile

Cardfight!! Vanguard Zero, 2019 (JP), 2020 (ENG)
Buddysma -Start with Smartphone! Buddyfight!, 2018 (JP)