1 tuxnes is a NES emulator.
5 - dynamic recompilation from 6502 opcodes -> x86 native opcodes
6 - mappers: 0, 1, 2, 3, 4, 7, 9, 11, 32, 66, 99
7 - experimental mappers: 15, 22, 23, and 71
8 - gzip and zip file support
10 - built-in disassembler
11 - joystick support (2- & 4-button)
12 - experimental sound support
13 - capture screenshots in X pixmap (xpm) or portable pixmap (ppm) format
14 - Game Genie code support
16 - alternate palette support