Cocos2D-x for Qt is an open-source mobile 2D game framework. It is a port to Qt of the Cocos2d-x open-source C++ mobile 2D game framework (which was in turn ported from the original cocos2d-iphone project).
The project, which makes it very much easier to write mobile games for Qt platforms, has now made its first candidate release (1.0). It delivers a feature-complete version for Qt and has been verified on Symbian Anna and Belle devices (Qt 4.7.4, Qt Mobility 1.2.1) and the Nokia N9 (MeeGo 1.2 Harmattan).
There is good documentation on the wiki, including a porting guide and a tutorial for the JumpingGame example. A short video of JumpingGame is shown below:
The project team are responsive to discussions and suggestions, so you if get stuck, just ask!
– Hamish Willee (on behalf of the Projects Moderation team)

Si le jeu sors comme ça je n’y voit aucun interet.
Qt offre tellement de possibilité et voilà avec quoi onse retrouve, un jeu lent, moche.
Quand on vois des jeu comme SpeedX sur Symbian on se dis ouaaa y a des bons jeux.
Mais y en a pas assez et beaucoup de jeu sans interet comme celui ci.
Its a game FRAMEWORK – you can write any 2D game you like. The example is a demo only – not intended to be the best game ever.