Indie developer Curve Digital has confirmed that its latest lineup of games will not be coming to Xbox One due to Microsoft's controversial Xbox 'parity clause'.
The clause in question demands that games must be released on Xbox One at the same time as versions on other platforms - not afterwards.
Curve's latest games, The Swapper, MouseCraft and Titan Attacks, are to debut on PlayStation consoles, which makes them ineligible for release on Xbox One, Curve confirmed to Digital Spy.
"Unfortunately, all these titles here get ruled out by the parity clause," said Curve's managing director Jason Perkins.
Design director Jonathan Biddle chimed in, "We feel like it's unnecessary handcuffs really. But that's the way they've decided to run that."
The duo explained that their games were in development for PlayStation before Microsoft's indie-friendly ID@Xbox program came into effect.
Microsoft has admitted to 'reviewing' and enforcing its parity clause on a case-by-case basis. This would indicate that the platform holder has chosen not to make an exception for Curve's games.
But Curve says its future titles will make efforts to accommodate Xbox One owners.
"We're platform agnostic. We'll support everyone. What works for us is having many as healthy competitors as possible," commented Biddle.
"They'll all try and promote the games they've got, and that's what we want. We want a healthy ecosystem, so we want everyone to do well."