The ninja game is awesome especially the Qi balls. lol. The music is very familiar?

Not too bad. I'm not sure I've seen this concept done before, pretty sure I've seen something similar though. It's got a steep learning curve to get the arcs and angles just right. It's fun to play and gets you stuck thinking sometimes.

Level 10 bugs out sometimes. You're supposed to blast the enemy to where he can be shot, but sometimes he will bounce off the peasant and back under the ledge where he can't be shot at. It's not too big a deal as you can just retry but might wanna fix it.

Tutorial text sometimes gets hidden and can appear to be wrong, I suggest bringing it to the foreground and moving it away from things the player needs to see. On level 6 for example it's completely unreadable. Also on level 5 it asks you to check out the buttons in the lower right corner... but there are no buttons there. Did it mean the ones on the top right corner? Because those are just the sound and option buttons. Also on level 9 it tells you to shoot the switches, but there are no switches, almost like it's for the wrong level. You can complete the level as normal without shooting any switches.

Overall it's a good game but comes off as a little unpolished.