When considering integrating a payment gateway for your game, it's crucial to choose one that is reliable, secure, and supports multiple payment methods to cater to a global audience. From my experience, options like Stripe and PayPal are quite popular due to their extensive feature sets and robust security measures. These platforms ensure smooth transactions and have a good reputation among users.

Additionally, you might want to look at how well these payment gateways integrate with other services that your game might offer. For instance, if you're planning to sell in-game items or currencies, like the Buy Cataclysm Classic Gold on wowvendor, you'll need a gateway that can handle transactions smoothly and securely without compromising user experience. This integration can significantly enhance your game's monetization strategy and provide players with easy access to the resources they need to enjoy the game fully.