Six of the top 10-grossing MMOs are free to play games. WoW is one of them. : wow
Top grossing F2P MMO games worldwide 2017 | Statista
The best free PC games | PCGamesN
Top Mobile Games by Worldwide Revenue for August 2020
Only 0.15% of players account for half of free-to-play game revenue - ExtremeTech
Top Grossing Mobile Games Worldwide for August 2019
CrossFire: Tencent's Top Earning Free-to-Play Game You've Never Heard Of
App Revenue Statistics (2019) - Business of Apps
The true cost of free-to-play games | iMore
PUBG Mobile falls one spot in highest-earning mobile games rankings in 2020 (Q3) post India ban
The best free games on Steam 2020 | TechRadar
Fortnite made $2.4 billion in 2018 as free-to-play and mobile games dominated the market
Fortnite Usage and Revenue Statistics (2020) - Business of Apps
Best free games 2020: the top free PC games | TechRadar
The best free PC games | PCGamesN
25 Ways to Earn Free Google Play Credits: Hack Your Way into Free Codes - MoneyPantry
Free games like 'Fortnite' earned $87.7 billion during 2018 - Business Insider
Top Earning Mobile Game Genres 2019 | bencinStudios
Best 10 Ways to Earn Money Playing Games Online | Dream Home Based Work
Fortnite becomes the top-grossing free game in the world after raking in $2.4 BILLION in 2018 | Daily Mail Online
The Top Mobile Apps, Games, and Publishers of Q1 2019: Sensor Tower's Data Digest
Fortnite and FIFA 2019 were the top-earning games last year
Top 10 online games by free-to-play earnings, League of Legends takes second place to CrossFire | hackislash
Chart: The Biggest Free-to-Play Cash Cows of 2019 | Statista
40 MONEY MAKING GAMES OF 2020. GET PAID UP TO $3000 WITHOUT INVESTMENT
Chart: The Biggest Free-to-Play Cash Cows of 2019 | Statista
Play games and earn money on India's leading real money games platform
Chart: Cashing in on Free-to-Play Games | Statista
