You know your game is successful when Forbes, the leading online financial publication, bases future predictions on the sales figures of your microtransactions alone. GTA Online has turned out to be such an absolutely massive business juggernaut that Take-Two might decide that always-online is the way to go. They might have passed the 60 million shipped copies mark (plus sales from digital distribution), but it is the Shark Card sales for GTA Online that are bringing in the serious cash.

By serious cash, we mean $500 million. That's right, the entire budget of Destiny, the most expensive game ever made, can be covered by the profits from microtransactions. Shark Card sales have made back twice the budget of GTA V. Considering that Take-Two expects the popularity of Online to only increase with time — which seems to hold true — that rate of profit is only going to go up along with the player count. Even now, there are over 8 million unique log-ins per week.
We've compared the average player counts for other popular games in the past, but for a monetary comparison, consider that Halo 5, the biggest exclusive title on the Xbox One, has only made $1.5 million from microtransactions. This insane number drives the stake through anyone's hopes for singleplayer DLC, according to Forbes.