iDOS - Dospad is a DOS emulator for iOS. It a port of DOSbox for iOS. The app includes Wolf3d, Duke I/II, Major Striker, SuperNova, and Kingdom of Kroz II.
Features
PC Compatible Soft Keyboard
Mouse/Virtual Gamepad/Joystick
Landscape support
Force 4:3 aspect ratio
Customizable floating gamepad
Known Issues
Keypad sounds cannot be turned off by option setting.