"I think there is no better place that the top"
> Why not the bottom, for example? (or (better) - the keypress)
"the game itself isn't made just be lean and nice as graphic and music."
> It absolutely doesn't need to be easy, just there are many various ways to make it more challenging:
- Increasing camera speed
- Making more objects
- Making vertical levels
- And you will find many more as you continue developing
Just these things make the game itself more challenging, dynamic and fun instead of making it harder by keeping not very convenient ui