Our first Cocos2D game, Tap4Two, just got released today! We are very grateful to the Cocos2D tem, it's a tremendously good engine and great fun to work with. Especially with such a community as this!
In Tap4Two 2 players on 1 iphone can compete against each other in solving puzzles. The game has almost no learning curve – what matters is your wit and reflex. When you spot the solution - tap your button. Your reflex will be measured, and statistics will be computed. Compare your skills with your mates in a competitive environment.
It's $0.99, available in App Store:
http://bit.ly/fw0pDq
Making of gameplay video on a homemade tripod for iPhone4 (it was loads of fun ! :) )
We've got big textures:

And a sunflower:

Even a letter puzzle:

Gameplay video:
We had some problems with smooth animation of the huge textures and of UIScrollView (options screen), especially on the 3G, but eventually we solved (with great help from you people, on this forum!)
If you have any questions about those issues, or anything - PM me!
Some PROMO CODES:
N7N9773KTFEL
XARMN9AHWTXA
Thank you guys,
Tomek Kopczuk