Here’s a cool guide on XDA Developers that shows you how to run PC games on your Android device using DosBox.
Games For Designers
Here’s a collection of small games that teach design concepts. The Bézier game in particular is great for learning how to use the pen tool in Photoshop.
Coding Games
Coding games seem to be pretty popular these days. The idea is you’ll either learn how to program by playing (fun!) a game or you’ll improve your existing coding skills by solving game puzzles. Two that I’ve personally tried are CodeCombat and CodinGame. CodeCombat is targeted toward beginners who want to learn JavaScript whereas CodinGame is targeted toward programmers who want to show off their algorithm prowess.
PSN discounts
Mikhail Fedosov made a cool web app that tracks historical game prices on the PlayStation store. Super handy for nabbing a deal!
Dungeon Crawl Stone Soup
Dungeon Crawl Stone Soup is an open-source, single-player, role-playing roguelike game of exploration and treasure-hunting in dungeons filled with dangerous and unfriendly monsters in a quest to rescue the mystifyingly fabulous Orb of Zot.
I’m a sucker for for retro games and Dungeon Crawl Stone Soup looks like a solid roguelike. It can also be played online via SSH and it’s open-source to boot. Win-win-win.