First, let me say that I really like this game. It’s fun and easy to do, and I realize that seeing ads is the trade-off for using the free version. However, I’ve noticed the longer my session goes, the more ads I receive. It’s gotten so bad that my game is often interrupted by ads about every two to three moves. I don’t mind watching the occasional ad, but think it’s ridiculous to have so many during a game. I’ve thought about deleting XBlocks a couple of times.
If the number of ads are reduced, I would give this a higher rating.
It would also be nice to have a “back” or “undo” button. I play on an iPad, and every so often the blocks end up in a different place than where I intended, which is another source of frustration.