"Mobile"* apps:
1. Slim Social for FaceBook
2. Tubecast for YouTube Pro
3. Adobe Photoshop Express
4. Instagram
5. Notify Mi Band
"Mobile"* Games:
1. Leo's Fortune
2. Shadow warrior 2
3. Deus Ex GO
4. Lara Croft: Relic Run
5. Tiny Troopers
Desktop/Tablet Apps:
1. Aviary Photo Editor
2. Hand Off
3. Netflix
4. FlipBoard
5. Book Viewer
Desktop/Tablet Games
1. Wasteland 2
2. Quantum Break
3. Rise of the Tomb Raider
4. Ori and the Blind Forest
5. Forza Horizon 3
Non-store Desktop/Tablet Apps
1. FL Studio
2. Macrium Relect Free Edition
3. Adobe Illustrator
4. GIMP 2
5. Mu Torrent
Non-store Desktop/Tablet Games
1. Torment: Tides of Numenera
2. Pillars of Eternity
3. Trine 2 (Steam edition, cause its touch enabled)
4. Divinity Original Sin
5. Room 2
*Obviously most mobile apps and games these days are UWP, and are just as good on desktop or tablet too, and some vice versa applies as well (apart from centennials and win32s).