A very addicting game. Nice concept and visual. There r a few thing though:
1) Need more info on how new elements appeared. Is there anyway to slow it down?
2) What is the probability of each element? Are they changed when the game got harder?
The 1st element should pop up less when reach the 6th or 7th.
3) Bigger room option to enjoy the game a bit longer or puzzle games will be great.
4) Should get an ability or something that help the game less difficult. A preview of the next 3 blocks to plan a head or maybe an undo option.
5) Should there be bonus points for combining 5 blocks or more?