Thoughts about a game involving a cat with no legs jumping around.

So I've decided to make a change to my game. It's not going to be a platformer anymore, it'll be something like this: http://www2.sunflat.net/en/games/papijump.html

This particular game is a high score game - the aim is to just rack up the points by jumping from platform to platform until you fall off.

With my game, I want there to be an ending - maybe when Mr kitty reaches the top he could collect an item, which completes the level/game? But then again maybe just a high score (kind of infinate) game would be better?

I think it would be sweet to have the backgound change depending on the time of day - initially I'll just do colours, but if I have time I could add clouds and gradients. or maybe the cat could jump on clouds? I'm not entirely sure but I do need to get this sorted. Right now I've just finally got my sprite sheet put together. I made it difficult for myself by saving the original images I drew in a silly format and making the backgound not transparent, but it's all done now I hope. Now I just need to animate them in a movie clip so I can use them in my game (I realised that .gifs wouldn't really work...) >__<