@dalewj The robot can be killed. Use the stalactite enemies to drop on it, when those hit him, he takes damage. It's actually a pretty easy boss once you figure out that little trick.
Many puzzle games seem to fall into one of two categories that ultimately ruin a game. Either it's fun but too easy, or it's boring yet challenging. This game manages to walk this line beautifully, by being simultaneously fun and challenging (without being mind numbingly too difficult for the average person to be able to pick up and eventually beat). For this, I give the game a perfect 5/5.
This game is generic, and exactly like every other 'match' style puzzle game. Playing the first like ten levels, I got a feeling of de-ja-vu. This is because I am approximately 99% certain that these levels are all directly ripped from "Yoshi's Cookie". If I could give this game less than a one, I certainly would. 1/5.
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 "Epsilon"){kind=icon}
 "Match-3 Puzzle"){kind=icon}