Which gaming company pioneered the 'Steam Wallet' digital payment system that revolutionized how PC gamers purchase and manage their game libraries?

The intersection of gaming and payment systems has evolved dramatically over the past decade. From simple in-app purchases to complex virtual economies with real-world value, gaming platforms have pioneered innovative retail payment solutions. Test your knowledge about how major gaming companies have revolutionized digital transactions and virtual commerce!

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Valve Corporation
Epic Games
Blizzard Entertainment
Electronic Arts (EA)