I have some ideas and questions
I'll tell you my ideas first:
1) Make a Tux animation when it unfolds and the door opens.
2) When there is a slide, hold the button down, and Tux rolls down, like super Mario Bros 3 and world. And when he runs. It rolls down the belly quickly
3) running Animation when Tux goes to hold the shot button, he runs fast.
Questions:
1) How are you doing with multiplayer?
2) in 3 world will be levels with vyazano with pirates and ships?
3) You can change the green dragon sprite, because it looks strange to me.
I hope you like my ideas, if you like them for earlier thank you very much!