Hi there,
My first iPhone game is now out on the app store!
http://itunes.apple.com/gb/app/alone/id356286001?mt=8

And a video, from an old development version though:
It's an isometric platformer game, I love these kind of games, been playing them since I was a kid with my ZX Spectrum!
There is a download section to get new levels, once I get new ones! (working on a couple of new levels it right now)
I have used cocos2d for the menus, and to render the layers and sprites, got some performance issues at some point, but so far is working fine, I think. I didn't use the isometric tiling support on last version of cocos2d as I started working on this like a year ago, can't remember, it feels a while now! I got stuck in version 0.8.2 and didn't have time to migrate to 0.9, to be honest I may need to implement from scratch the rendering routines, as implementing 2D sprites in isometric is such a pain! So I am thinking in some ray-casting or something at the pixel, lot of works I guess...
And also, some promo codes, I have already gave away a few, so until I get a new update, here you go 7 of them:
9P9TAR94E99P
XW3MEYXTLM64
6KAMHJJEMR4P
PLLWYXHY7EM3
L9L9AM9XNATF
ETFY4KHAPJXF
EFYXPLTFPEM9
Please have mercy with me on your ratings! ;)
Any troubles let me know and will try to help.
Thanks to all of you and thanks to cocos2d to help us developing our games.