I can 'dodge' a locked tetromino for a while on lower levels, but not so on these higher levels.
Also, once I reach level 6 (I fully understand, btw, low levels for someone playing Tetris as long as I have), the pieces just fall and I can't move them fast enough and eventually the game just ends. I've yet to be able to pass level 7 because suddenly I'll have 5, 6, or 7 of the same S and Z pieces thrown at me, and I'm definitely not THAT good to figure out how to get them all pieced together. Also, the randomness changes to a more 'difficult' randomness as the game progresses into harder levels. There is a difference between true randomness and the illusion of randomness. Randomness is a major issue, as seen in other comments and links to other forums below. I've been playing this game for a month and it's no replacement for some of the older, obsolete, or other online versions I've played on other systems, but this one has the best graphics and (sort of) response.