See! Look over at RADiance. They are going to do well because THEY did something new and fun. Not the same d&*m game that has been done 34,987 times since flash came out.
People are actually giving four and five stars for this? Is the author paying you?
Seriously, you have to rate these things based on the games merit, not the author going "This is my first game."
I'd put in some mouse controls. Improve the artwork. Add some different play modes. Definitely a short tutorial or bit of instruction. You have a good piece of work here, but it feels unfinished. The "old school" look is neat but... it doesn't fit here.
I'd really love to say something positive and reassuring about this game. Sadly, I'm honest. Well done for a first published game but no special treatment for newbies in the ratings dept. If the guardian had momentum or some other foil-able with skill trick to get past him (past level 3 or so) then maybe you might have something here. As it is... Unwinnable means boring. Boring means bad. Better luck next time though!
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