The release of Alien: Isolation this week did not go smoothly for everyone. Some gamers are reporting that they are not able to download the bonus missions promised to them for preordering.

The good news is that publisher Sega is aware of the issue and is working towards a fix. Responding to fans on Twitter, the official Alien: Isolation channel says, "We've had a few reports on this and are looking into this now."

On the Alien: Isolation forums, numerous players are reporting the issue, which appears to be most widely affecting PlayStation 4 users. Representatives for developer The Creative Assembly recommend that you contact customer support if you're experiencing the bug.

Alien: Isolation launched on October 7 for Xbox 360, Xbox One, PlayStation 3, PlayStation 4, and PC. For more, check out GameSpot's review and what other critics are saying.

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