What Sony's '4.2 Million PS4s Sold' Figure Actually Means - IGN
PS4 Sales falling in Japan | Attack of the Fanboy
PS4 sales hit 88 million, surpass PS3 | TweakTown
Yes, PlayStation Is Sidelining Japan, And It's Time To Accept That And Stop Making Excuses
Japan: sales volume of PlayStation 4 games by distribution type | Statista
List of best-selling PlayStation 4 video games - Wikipedia
Sales-Age - Japan sales week 3: Switch hardware +77% YoY and Software +52% YoY. PS5 hardware ~7K. | NeoGAF
PlayStation 4 goes on sale in Japan, and there's no competition - The Verge
Japanese Sales Charts: PS4 Numbers Increase Dramatically, But Nothing Can Stop Smash - Push Square
PS5 vs PS4 Sales Comparison - April 2021
PS4 vs Xbox One vs Switch Japan Lifetime Sales – October 2017
Nintendo's Switch Passes the PlayStation 4 in Lifetime Sales in Japan
Sony Japan Discontinues All But One PlayStation 4 Model – GTPlanet
PlayStation 5 Has Surpassed 1 Million Units Sold in Japan
PS4 vs Xbox One vs Switch Japan Lifetime Sales – November 2017
PS4 sales hit 5.3 million ahead of Japan launch, while Xbox One sits pretty at 3.6 million - ExtremeTech
PS4 vs PS3 in Japan Sales Comparison - PS4 Falls Further Behind in August 2020
PS5 vs PS4 Sales Comparison - April 2021
PS4 vs Xbox One vs Wii U Japan Lifetime Sales – May 2017 Update
PS5 Has Been Rapidly Outpacing PS4 Sales In Japan : r/PS5
PS4 vs Xbox One vs Switch Japan Lifetime Sales – October 2017
Sony Tops Nintendo in Game-Console Sales | Time
Japanese Sales Charts: PS4 Passes 5 Million Milestone - Push Square
Big in Japan”: 1 million de PlayStation 4 sold in country - theGeek.games
Switch vs PS4 Sales Comparison - October 2021
