As usual, Tetris Blitz pushes the freemium model right to the edge of acceptability, diluting the 'score as many points as you can in two minutes' concept through some incredibly strong power-ups you can purchase, but it is a great adrenaline rush - see our review here on AAWP:

Tetris Blitz is brazen about all of this, and it's the cocky swagger of knowing that even if it is called out by some, this is 'Tetris' and it will still be downloaded by the metric tonne, and as long as 1% of people buy a boost package, then the developers will be in profit.

But there's so much to buy that it's crazy! How about the ability to see more than one tetronimo piece coming up? That function, which is part of the fabric of the traditional game, will cost you £2.79. Want to hold two pieces instead of one? £4.49. Remove the in-app advertising? £3.49. I'm up to £10.77 already and I've not even started on the limited use boosts (three shots of 'crusher' block for £4.49?) It's ridiculous.

Have a pure experience and never beat the high score you made in the tutorial move, or cough up and pay for the boosts, knowing that it's the only way to get to the top of the high score table... hoping your friends don't care that you bought your way there.

Here's the pitch for this new Tetris 30th Anniversary version: 

• Retro Tournaments – Pay tribute to the original game with retro-skinned gameplay, Power-Ups, Finishers, and new 80’s inspired Tetris music
• New Avatars – Get your hands on new Anniversary avatars
• Anniversary Finisher – Enjoy sweet success without the calories with the all-new Tetris Birthday Cake Finisherd

Here are a couple of screens of the new update in action:

So, in short, enjoy the action, enjoy the retro, but watch out for swingeing in-app-purchases! Tetris Blitz is a free download from the Windows Phone Store, and you can find the link via the AAWP App Directory.