Great game

I really like this game, playing only against other people. Its a lot of fun. The latest version added good feature that now during race you can see peoples names next to their car.

However I have the following comments:
1. I cannot enter my name or sign in to Game Center (I have iPhone 4S, latest iOS).
2. Once race is over, you have less than 1 second to read who took which place and using what car. I am personally very interested in people with whom I am playing, and I cannot even read their names in 1 second.
3. It would be great to chat with other people.
4. It would be nice if people were ranked based on the number they come first among their level and the system would match people of the same level.

O_l_e_g about Tiki Kart 3D, v4.0