While Apple spent the first morning of its Worldwide Developers Conference showing off its new iOS 8 and OS X Yosemite operating systems, the company ended the day by announcing the winners of its annual Apple Design Awards .
Apple describes the recipients as apps that "raise the bar in design, technology and innovation". Developers of the winning apps haul in a load of Apple hardware, including several Macs and iOS devices, as well as an ADA trophy-cube (right, photo by Ustwo Games).
Use the slideshow controls above and right to see this year's winners, which are all must-haves for your iPhone and/or iPad.
The Apple judges described Monument Valley (£2.49/$4, iTunes Store link) as a game that set out to do something big, and it succeeds. The game takes Escher-type images and constructions and incorporates them into original gameplay, as you guide a princess through each map and figure out the optical illusions.
The game was created by east London-based Ustwo Games. Watch our interview with the team behind Monument Valley.
You must save the city of El Sumado by solving math problems that exercise different maths strategies.
A platform game for iOS, Leo's Fortune (£2.99/$5, iTunes Store link) has you looking for the thief that stole your gold. The game has 25 levels filled with lush environments, active backgrounds, and challenging obstacles. The judges liked this game for its integration of graphics, gameplay, and easy controls.
You can integrate text, video, and photos into entries, and a calendar and support for tags and hashtags helps you organise it all.
The point of this game is to draw lines that then animate to knock out dots that appear on the screen. Blek (£1.99/$3, iTunes Store link) sounds easy enough, but it gets more complicated as you figure out the right gestures and avoid obstacles.
While it's also simple in its presentation, it's a good example of how you can make a great game without being complex.
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A favourite among editors on our sister site Macworld, Threes (£1.49/$2) is a tile-matching game that's challenging and nicely designed. Apple judges called out Three particularly for its 'personality', expressed in the game through whimsical visuals and comical sounds.
A professional graphics tool for creating "flixels" – combinations of video and photo. Cinemagraph Pro (£17.49/$25) can let you quickly make animated GIFs from video clips, apply filters to videos, fix blemishes, mask a specific area for animation while the rest of the image remains still, and a lot more.
The Apple judges call Device 6 (£2.49/$4, iTunes Store) a "game-changing" type of app. Device 6 is a combination novel and game that integrates sound and visuals, requiring you to rotate your iOS device in different directions.
Designed for the iPad, Storehouse-Visual Storytelling (free, iTunes Store link) allows you to create a rich story-telling experience. You can combine photos, videos, and text to create a story using built-in templates, and you can publish your story to the Storehouse community or distribute it to friends and family via email, Facebook, or Twitter.
Apple judges pointed out that the app uses all the latest app technologies to create an app that performs well on the iPhone or iPad.