Ads are definitely there but I don't get them between every level and they're all super fast and easily skip-able within seconds.Some of the levels are tricky and it takes me some time to get through them. For reference, I'm at level 52 and had a few pretty tough levels, but I was able to pass them within 24 hours of casual playing.One thing I liked at the beginning of the game was that it would let me watch an ad to continue, but that seemed to stop at a point, which makes it frustrating to keep playing the tougher levels. I wish the devs would let us watch ads when we lose to keep playing, but for some reason, I no longer have this option and it forces me to pay coins to continue, which is not sustainable at all with the small amount of coins awarded for level progression.I really hope the devs will decide to allow unlimited ad watching for continuation on failed levels, especially in a game with limited lives. I could easily leave a give star review if this was an available option for players.All the same, the game is enjoyable, but you may be stuck for a while on some of the more difficult levels.

It updated a week before I posted but it used to be no ads and had about 170 levels before repeating so when it updates again making you watch an ad every reset and pay weekly for no ads remember it was good

This is a fun and challenging game. I really enjoy it but there are often times you can’t make a move because none of the blocks are below the line and you may have open spots but no matter what you do, you’ll lose the game. I have run out of lives many times on the current level because of this design flaw. I don’t mind playing games that are difficult but when it’s a flaw of the game itself, the game is no longer fun. Hopefully, the developers will fix this but I’m not wasting my time on a flawed game that requires spending money to move on to another level.

Can be amusing enough for what it is (at least until their dodgy physics stop working). I recommend playing through the first 50 levels to enjoy what you can, then delete it and move on to something else.