Hi! I've very recently created a romhack that adds an ingame timer to NES Tetris. I programmed it to stop when 100 lines has been reached, so I think it would be wonderful if you allowed its use for official leaderboard times!

More detailed notes on the hack will be in the post below. I've taken great care to disturb the existing code as little as possible. If needed, I'd also be happy to show you a comparison of the disassemblies so you can verify that everything that needs to be there is indeed there.

Unfortunately I seem to be unable to upload files to forum posts, so I'll leave this link to the Classic Tetris Monthly Discord where I released it: https://discord.com/channels/374368504465457153/405470199400235013/984173583519592538