[dgently7]

awesome glad you liked it. id love to try it out again if you implement any of them. idk what else to call the black squares so "enemy" felt right for the board fights back vibe.

another nice thing i thought of with enemy block types idea is that you don't need to look anywhere but the board if you get rid of powerups that you just have so your whole interface gets simpler. if you still needed powerups you could have them show up as normal pieces in the chain of pieces.

it def starts to veer into more of a classic tetris how far can you go vibe than maybe the puzzle thing you are going for, but maybe its actually two games. puzzle mode is as now but starts with a fixed set or fixed progression of enemys. you finish the puzzle when you defeat them all. winning then is time or rows cleared or minimum number of pieces even. infinite mode is more like the current. or classic tetris, how far can you go while new enemies spawn in of increasing number and difficulty. winning is how many enemies you clear + lines + time

[Humanista75]

I call the 'enemy blocks' 'blocked cells', but I actually like 'enemy blocks' better! :)

Regarding changing the game dynamics by having power-ups appear as just another piece in the game, I think that would overcomplicate the gameplay and alter the flow of the game too much. I don't really see it as an option right now. I prefer the infinite game mode.

Thanks again!