I enjoyed this game quite a bit. There's a lot of positive points going for it. Firstly, the jump is really good. It feels nice, has a good height and timing, it's easy to predict and it's overall quite satisfying. The Ninja is animated well, I can tell exactly when its in the running state and jumping state. The background works as all backgrounds should. It's plain enough to not get in the way but still gives me a sense of being in a forest and a good sense of the speed of the game. The colours blend well together, nothing standing out too much and everyting is very readable.
Some very minor improvements for usability:
- Giving me the choice to go back to title when I die is simply not needed. I never need to go back to the title screen. Instead, having a Retry option only, and filling the space with X distance travelled stat, or something to tell my how far through the level I got. It makes the game more compulsive, makes me want to play more.
- Zooming the camera out slightly would help make the game feel a bit fairer. At the moment, the reaction time between seeing a hazard and jumping it is a bit short, especially if I over-jump and have to recover. It becomes a game of memory after a while. Zooming the camera out would allow me to see what's coming easier and react accordingly. It makes me feel more skillful that way.
All in all though, this is a solid runner game and you've nailed all the basics with it perfectly. There's many runner games that get sold on app stores that miss the basics by miles.
Really well done!