Despite differences in appearance and specs the PlayStation 4 and Xbox One are quite similar. However, there is one area where this is not the case. From having released their games for the Xbox 360, at least 20 notable indie developers now develop, favor or are exclusive for PlayStation 4 meaning their games won’t be available on Xbox One.
For some indie developers it is because of bad experiences from a previous collaboration with Microsoft, but generally it seems like the PlayStation 4 is the platform that these developers prefer to see their games on. Could it be because of Sony's respect for indies made clear by Santa Monica's collaboration with The Chinese Room (Dear Esther, Amnesia: A Machine for Pigs) on Everybody's Gone to the Rapture and Naughty Dog's praise of indie developers especially for their creation of characters?
17-BIT: Skulls of the Shogun on Xbox360 - Galak-Z exclusive for PS4 (says: Microsoft are not a decent publisher)
Arc System Works: Guilty Gear 2: Overture on Xbox 360 - Guilty Gear Xrd exclusive for PS4
Double Fine Productions: Iron Brigade on Xbox 360 - My Alien Buddy exclusive for PS4
Grasshopper Manufacture: Diabolical Pitch on Xbox 360 - Let It Die exclusive for PS4
Haemimont Games: Tropico 4 and Omerta: City of Gangsters on Xbox360 - Tropico 5 exclusive for PS4.
Iron Galaxy Studios: Wreckateer on Xbox 360 - Divekick timed exclusive for PS4
Klei Entertainment: Mark of the Ninja on Xbox360 - Don't Starve exclusive for PS4
Metanet Software: N+ on Xbox 360 - N++ exclusive for PS4
Mojang: Minecraft on Xbox 360 - Minecraft nextgen releasing first for PS4
Number None: Braid on Xbox360 - The Witness timed exclusive for PS4 (says: Xbox One not about gaming)
Oddworld Inhabitants: Oddworld MO and SW on Xbox - New N' Tasty! timed exclusive for PS4
Playdead: Limbo on Xbox360 - Inside for PS4 (says: regret that Limbo wasn’t multiplatform from the start)
Polytron: Fez on Xbox360 - Fez for PS4 (says: will never work with Microsoft again)
Red Barrels Games: Gathering of developers behind games such as Splinter Cell: Conviction on Xbox 360 - Outlast timed exclusive for PS4
RedLynx: Trials on Xbox360 - Trials Fusion for PS4
Supergiant Games: Bastion on Xbox360 - Transistor exclusive for PS4
Team Meat: Super Meat Boy on Xbox360 - The Binding of Isaac: Rebirth by Edmund McMillen exclusive for PS4 (says: will never work with Microsoft again)
Tequila Works: Deadlight on Xbox 360 - Rime exclusive for PS4
Tribute Games: Wizorb on Xbox 360 - Mercenary Kings exclusive for PS4
Vblank Entertainment: Retro City Rampage for Xbox 360 - Retro City Rampage DX for PS4 (says: Xbox 360-version was the most expensive, a bottleneck, damaged overall PR and hindered other platform's success)
Team Meat: http://www.destructoid.com/team-meat-probably-won-t-work-with-
Number None: http://www.playstationlifestyle.net/2013/06/13/jonathan-blow-talks
Oddworld Inhabitants: http://zoknowsgaming.com/2013/06/16/oddworld-new-n-tasty-not-
Vblank Entertainment: http://www.penny-arcade.com/report/article/xbox-one-vs.-indies-
Just a fan of great games..