Welcome to Josh's Classic Nintendo Tetris Hacks and Mods! I have developed something of a hobby: creating hacks and mods for NES Tetris. (I dabble with SNES, too.) My ultimate goal is to create a modified ROM of NES Tetris which features hard-drop, hold, T-spin recognition, and some sort of scoring modification. I currently do have all of those functions in different individual ROMs, but I have not combined them all into one ROM. Here is the list of current working mods: Hard Drop NES (this shit is the bomb-digetty) T-Spins Count NES Piece Swap NES ("select" swaps current piece and "next" piece) "Masters' Edition" NES (fall rate [gravity] is harder; 1.5 falls Level 9 and up) New Prototype (Level 29 and up new gravity rules) Links and Info coming soon! Oritinal post: Wow, where'd this forum come from? I have a hobby of making ROM mods and Game Genie codes for NES and SNES Tetris. Eventually I intend to have a completed ROM of the game that has hard drop, hold, t-spins, and score rollover. I have mods that have these features, but not one that has all features in one game. I will soon have links and lists of mods and GG codes, but not today What brought me here today was a new idea for Levels 29+ that I thought up a couple weeks ago and wrote the code for today. The idea is that instead of the sudden jump from 2 frame fall-speed to one frame falls at the 28->29 transition, I would instead gradually increase the speed. So what I came up with is this: At 29, the top 25% of the playing field (the top 5 rows) would feature one frame fall-speed and the bottom 75% would have 2 frame falls. Then at 30, the top 6 rows would be one frame, the bottom portion would be 2 frames. 31 would be seven rows of single frame drops, 32 would be 8 rows of single frames, and so on until the game becomes unplayable. I wrote the code and tried it out on a PowerPak. It's okay. Not sure if anyone would be interested in trying it out, let me know.