Harmonix has announced Amplitude will be missing its original release date window of this summer and is now expected to launch on the PlayStation 4 in December for those who paid for the early access reward. Everyone else should now expect the game to launch in January.

Harmonix made today’s announcement on Amplitude’s Kickstarter page. CEO Alex Rigopulos shared why the company made the difficult decision to delay the game. “It’s impossible for us to finish all of these extra songs, environments, features and modes on the same schedule,” he writes. “Now that we’ve committed to this expanded scope, though, we won’t be able to complete and ship the game until the end of this year on PS4.”

Today’s news wasn’t all bad as Harmonix revealed Amplitude will now launch with 30 songs, instead of 16, and added two more playable environments, unique path topology per song, and more play modes. When Amplitude is shipped, it’ll feature a solo campaign, solo free play, 2-4 player “free-for-all”, and an all-new team play mode (1v3, 2v2). Additional nanoblasters, leaderboards, and a still-to-be-announced method of playing Amplitude round out all of the changes.