One of the cool things about Amplitude's Endless games is that, despite their vastly different settings, they inhabit a shared fictional universe. A universe that's about to get a lot closer as a faction from Endless Legend makes the jump to Endless Space.

There have been a lot of 4X games set in space lately, from Stellaris to the Master of Orion reboot. Some of them have been good! None, however, have been as good as Endless Space 2.

The new Amplitude isn't an evolution of the track-mixing music gameplay that made the original and its predecessor, Frequency, so popular with rhythm game fans. It's almost exactly the same, and that's perfect.

Video: Harmonix's Amplitude revival finally has a release date: January 5. Backers at the $US40 ($55) or higher tier will gain access a little earlier, however, on December 23.

Briefly: Everyone's gonna have to wait a few more months for Harmonix to bring back Amplitude, as the studio announced today its Kickstarter-funded revival is moving from March to (northern) "summer".

For a while there, it looked like the Kickstarter campaign to revive Harmonix's much-loved music gameAmplitude wasn't gonna make it to its $US775,000 goal. But with a lot of Twitter shouting, a telethon and some very generous backers, they have passed the mark with just 21 hours to go.

Maybe it's scepticism. Maybe it's Kickstarter malaise. Maybe people just don't care.