Hi the game is pretty cool, but I can't make 5 4-line combos (did up to 3). It seems very hard or impossible due to the way pieces are randomly generated (is there any specific strategy tho ? I am not especially good at tetris games)
it’s just like any other Tetris game; finishing four lines at a time is possible but challenging. Try to stay to the left corner at the beginning of the game, and use the long 1x4 pieces to finish rows.