Is purchasing a video game "battle pass" with real money permissible?

Many modern video games feature a free "battle pass" with various rewards, and often include an additional premium tier which can be purchased with real money which gives much more or higher quality rewards, but otherwise works exactly the same. These battle passes feature rewards which are not received immediately, but rather which are earned over time by playing or achieving set goals in-game. The rewards are often fixed, but may also include randomized drops. There is also a time limit so if the required achievements are not met before the deadline, all remaining unredeemed rewards are forfeit. **Would paying real money to access the premium tier of these battle passes be acceptable in Islam?** So as not to distract the focus of the question, assume that the video game in question is otherwise permissible.