this morning ct, showed me this wiki update about the grade recognition system implementation. i'm not here to explain what people wrote on the wiki but maybe it could be useful to sort out important information for players who focus on "how to get a better grade" once they pass level 500 in master mode (assuming grade 1 is earned) : - From 500 to 750, alterning tetris and double is more efficient on internal grade system reward than only tetris. (combo not necessary if faster enough). - From 750, Tetris should be the only focus. - From S7 and level 750, 2 tetris automatically reward you S8. - From S8 and level 750, 2 tetris automatically reward you S9. now i know how to do for getting S9 edit: corrected S9 condition and table rounded value.