PS Vita will use UMD Passport app to provide discounted downloads of UMD games you own - The Verge
I've never seen this different type of umd with the clear case. Is it legit? Any other UMD variations? : r/PSP
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Sony: UMD is Here to Stay | WIRED
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5 Reasons Why Sony's Universal Media Disc Failed
Universal Media Disc - Simple English Wikipedia, the free encyclopedia
Anyone experienced UMD Disc Rot yet?! I've got quite a big collection by now and was reading up on disc rot over the last days. I know it really depends on the
Best Buy: RDS Industries UMD Disc Cases for PSP (3-Pack) UMD12
Demo Disc for PSP vol. 1 (El Kadsreian) | Dream Fiction Wiki | Fandom