The original Sonic the Hedgehog, which first made its debut on the Sega Genesis back in 1991, is finally available on Android, four years after coming to the iPhone. The title is largely identical to the 1991 release, but it’s been optimized for modern, touch-based devices and offers some exclusive content only available on mobile.

You’ve probably already heard about the awesome things announced at Google I/O yesterday, but if you didn’t get a chance to watch it yourself — or you just tuned out because it went on too long — then you can now watch the whole thing online.

We suggest skipping to the best bits, though, because it’s almost four hours long.

Following its mammoth I/O keynote yesterday, which saw a number of services updated and new ones introduced, Google has added support for a number of additional devices — including the latest flagships from Samsung and HTC — to its Google Wallet app for Android.

Google unveiled a shed-load of astonishing new features at the Google I/O keynote on Wednesday, some of which were more exciting than others. One of the company’s smaller — but still important — announcements was the ability to send money via a linked bank account through Gmail and Google Wallet.

A new version of the the popular keyboard application SwiftKey is available to download from the Google Play Store. The update brings three new themes for you to enjoy, in addition to a variety of bug fixes and improvements.