Good Old Tetris - Play Tetris Online. The game that will never get old.
Nestopia - A portable and cycle-accurate NES emulator written in C++
Word Tetris - Tetris with words
FCEUX - FCEUX is a Nintendo Entertainment System (NES), Famicom, and Famicom Disk System (FDS) emulator.
Tetris Blitz - Race against the clock in a two-minute blitz to clear lines and rack up points before time runs out.
puNES - PuNES is a high accuracy NES emulator.