In a statement, Crucible's Colin Johanson said: "While there’s been a great response to the premise of our game from many players, we’ve also heard the feedback that there are features that we need to add as a top priority, like voice chat.
"We're going to be making a lot of changes based on your feedback, and at the end of this we'll have built a great game together."
Respected games journalist Jason Schreier said: "Amazon's new game flopped so badly that they're...un-releasing it?
"Not only will you be going toe-to-toe with your fellow competitors, but you’ll have to adapt and overcome all the challenges the planet itself throws your way.
"You and your teammates will need to work together to take down alien creatures, capture objectives, and pursue your opponents in search of victory."
Insiders at the firm said that Crucible is designed for competitive play, but it's not clear that the game won't have a proper esports scene for some time.