Call Of Duty: Warzone- A battle royal game is a first-person shooter where players are going to fight to the death in a shrinking area to be the last man standing.
Played by a 150 player in a massive world, it is reported that the game is going to feature its own virtual currency for buying upgrades in the game and "generally creating revenue for the developer".
Developing the game could cost a big amount of money, so developers tend to use their own currency in the game so that players could purchase upgrades in the game using their own real money.
"However in the New COD: Warzone it is reported that completing a mission or task in the game could earn you cash where you could spend at the "Buy Stations". Buy Stations can be used to buy upgrades and respawn tokens to resurrect dead teammates."
The blockchain technology already uses a lot in the gaming industry and tend to be stronger as the gamers support cryptocurrency. There is no doubt that the connection between the two increases the use of cryptocurrency.

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https://bitcointalk.org/index.php?topic=5225662.0Reference:
https://bitcoinist.com/call-of-duty-battle-royale-with-virtual-currency/