$15? no. Interesting yes.
Had this been released as a full version game (FREE) it would have been an easy 8/10 however I do not believe whatsoever that it is an intellegent decision to make people pay to play the full version of what looks like something that the atari 2600 threw up and served in an age where you can purchase much better console games for the equivilant price. Bad idea, bad score.