Played couple of games. Idea is fairly okay, but cant say I enjoyed the game, especially since these kind of games are not much to my liking. I can see this is at least okay game for those who like these kind of games.
Main problem for me is that it seemed too random how to survive. Seems those blocks just come from where ever and I cant quite do much about predicting where they are coming from (although this might be simply that I didnt figure out the pattern yet with just couple of games).
That said, I could see this as a good subgame on some game, and basically if adding something bit more, this could become more appealing.
Like maybe you need to pass levels, maybe even some story there. As in, first level, survive 10 moves, and very easy, then higher level you get, more difficult it becomes, and there could come all kind of different things, like survive 10 moves in very difficult environment, or survive 100 moves in less difficult environment.
Could come even levels which seem first easy ,but start getting harder. As in, first there is only one of those obstacles. When it does its cycle, it becomes 2, when those 2 do their cycles, becomes 4... That could be fun, all kind of variety, and maybe even a possibility to buy some sort of sheld. That like those coins, but a shiled. Pick it up, and you can fail once in that level without dieing.