The vintage game Karateka

If you install the AppleWin emulator and google for karateka.dsk.gz, you can experience the original gameplay from the Apple version of Karateka.

A snapshot from the DOS version.

For lazy players

The patch below allows to quickly win the game, for example: http://www.youtube.com/watch?v=HjeuB6pxMzI (don't miss the funny episode at the end of the video).

Immortality
KARATEKA.EXE
00003066: 48 90
00003D7E: 48 90

Steel breast
KARATEKA.EXE
0000306E: 83 C6
0000306F: 3E 06
00003072: 3F 01
00003073: 7E 75

Flying kick for humans
KARATEKA.EXE
00002F30: 7E 00

Flying kick for bird
KARATEKA.EXE
00002E2F: 7F 00
00002E30: 01 00
00002E34: 3D 25
00002E35: 04 00
00002E44: 06 00

Kill bird by first kick
KARATEKA.EXE
000031BA: 85 33

Kill humans by first kick
KARATEKA.EXE
00002F3A: 85 33

Applying the patch

cd patch
cp ../KARATEKA.EXE .
ruby patch-xck.rb KARATEKA.XCK

Answer YES to the questions and it procudes the KARATEKA_patched.EXE file.