Excellent work! In all aspects! Your game is top notch. The graphics look fantastic, the animations are great, the color palette is harmonious, the sound FX (they even come from different directions!!!) and background music - all great. The controls also feel really good. It's late here, so I had to quit for tonight when I found the robot. Will continue tomorrow.
BUT one thing really breaks my heart. Why don't you provide a browser based version of your game? So many people will just turn away because of this - and will miss the chance to enjoy such a great game. This is a petty...