Free to play games rule the entertainment world with $88 billion in revenue | TechCrunch
Fortnite earned $223 million in March - Superdata | GamesIndustry.biz
Top Free to Play PC Games by Revenue 2017 - SuperdataResearch - MMOs.com
Top Grossing Mobile Games Worldwide for August 2019
Russian Gaming Survey 2019
TOP Video Gaming Industry Trends of 2018 | DMarket | Blog
Chart: The Biggest Free-to-Play Cash Cows of 2019 | Statista
EU video games industry: 2018 stats - Game World Observer
Fortnite is the world's highest-earning game for the second consecutive year | MCV/DEVELOP
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Fortnite generated a record $318 million in revenue in May - Vox
2019's Top 'Free' Games Each Made $1.5 Billion-Plus | PCMag
Steam names the highest-grossing PC games of 2018 - Business Insider
Steam names the highest-grossing PC games of 2018 - Business Insider
Steam names the highest-grossing PC games of 2018 - Business Insider
Fortnite tops SuperData's 2018 chart with $2.4 billion digital revenue | GamesIndustry.biz
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Fortnite generated a record $318 million in revenue in May - Vox
PUBG was 2017's breakout success, one in three people on the planet play free-to-play games
Chart: The Biggest Free-to-Play Cash Cows of 2019 | Statista
Global F2P PC games revenue by region 2020 | Statista
The World's 2.7 Billion Gamers Will Spend $159.3 Billion on Games in 2020; The Market Will Surpass $200 Billion by 2023 | Newzoo
SuperData: Worldwide digital spending down 2% last month | GamesIndustry.biz
Fortnite made $2.4 billion in 2018 as free-to-play and mobile games dominated the market
Top 10 most profitable free to play and premium games 2018
Top 10 premium games of 2018 in revenue | TweakTown
Top 10 premium games of 2018 in revenue | TweakTown
Global F2P PC games revenue by region 2020 | Statista
