Just in case anybody wants to learn this here's a not-so-good guide aboout certain things first you can choose your stack height value and change it for example the wr for 40 line by china uses a 5 for her height value the highest possible value why is this usefull? becasue the lower the longer it takes you to place the piece so the higher the faster I recomend to start with the deafault value becasue I find it very hard to complete 40 line with it so yeah now about level level determines how fast the piece falls so ofcourse the higher the value the faster but I also recommend to start woth the lowest value becasue it's a bit easier to pb so yeah sorry if this isn't too good or doesn't help much and my english is not too good either so yeah hope this helps OneHand