Rovio's physics puzzler has become the Doom of the mobile generation - you aren't a platform until you have to play through the same levels of bird on pig action. Xbox Live makes the grade, and has Angry Birds. It's just as you expect, with smooth graphics, impeccable physics and no compromises. That's probably the most important thing for new users to a platform, to feel reassured that their smartphone isn't crippled compared to others on the market. Angry Birds, like the gaming benchmark it is, shows Windows Phone can mix it with the best.
The only other game that could match Angry Birds as "the standard" is Flight Control, but it's listed here for another reason - to show that developers are taking Windows Phone seriously as a smartphone platform. I really like Flight Control, but when Namco brought it to Symbian, they ported a poor java implementation that was, frankly, unplayable, and soured me on every other Namco release. The confidence in seeing a smooth conversion to Windows Phone is worth far more to me mentally than the game itself - which is worth a lot if I'm honest!
Plants v Zombies
The first of two appearances from PopCap, and probably the slickest implementation of a Tower Defence style game for a mobile platform. Just a few lanes of action in your garden to defend from the zombie hordes. With very limited resources to grow your killer plants and levels that take around five to ten minutes, this game was designed to be the perfect casual game and it shows. There's a huge amount of game play in here, the difficulty curve is pitched perfectly, the graphics are cartoony yet very clear... it just all works.
It's PopCap again, so lots of balanced game play, clear graphics, and a choice of game modes make this suitable for all sorts of gamers, be they fans of tightly timed games needing arcade reactions, or more cerebral thinking and planning on offer here. Bejeweled is a simple concept, switch two of the game pieces to make three, four or five in a row line, which disappears and the gaps are filled up with new jewels arriving at the top of the grid. Dangerously simple, a personal favourite of many since it's debut on the web and Palm OS over ten years ago, and I'm still happy to keep playing it.
And then there's Doodle Jump. An unassuming game that everyone loves. Just bounce as high as you can, move by tilting your smartphone, and shoot if you feel the need to be violent. it's delightfully low-fi in graphics, but packs a huge amount of addictive game play even before you start to look at the achievements that make up the additional fabric of the Xbox Live gaming arena
Electronic Art's Tetris, for implementing a version that respects the simple mechanics of the original (Marketplace link); Harbour Master for being the next best Flight Control after Flight Control (Marketplace link); Uno HD for proving card games can work (Marketplace link); and Gravity Guy for bringing an old-school arcade feel to my smartphone (Marketplace Link, plus you can read our review).
So, what have we missed?