Last night (or earlier today), developer Housemarque released patch 1.3.3 for Returnal but players then reported getting errors that pretty much broke the game. Because of that, they have pulled patch 1.3.3 and have since reverted the game to patch 1.3.1.

They have confirmed that a new patch is coming in “a few hours”, but in the meantime, Housemarque is advising players NOT to even start the game before the new patch is out. For those who have already updated to patch 1.3.3, the developer is advising them to re-download the game.

Q: How do we know we are affected?
A: You'll get the CE-100028-1 error popup.

..Just wait for the next patch coming soon if you're not sure.

— Housemarque (@Housemarque) May 5, 2021

Some players are reporting errors even after redownloading the game, so it’s better to follow the developer’s advice and to NOT even start the game until a new patch is out.

This is like every 2 seconds ….. pic.twitter.com/wtVWHE1bot

— Top Titans Fan ?? (@TopTitanFan) May 5, 2021

So to be safe, don't start the game before the upcoming patch is available and downloaded.

— Housemarque (@Housemarque) May 5, 2021

In the meantime, you can check out my review of Returnal here, or head on over here for a guide to surviving the game.