Android
Business Model Attribute Image Freeware / Free-to-play / Public Domain
Minimum OS Class Required Attribute Image Android 2.2 (Froyo)
Media Type Attribute Image Download
Input Devices Supported Attribute Image Touch Screen
Number of Offline Players Attribute Image 1 Player
Notes 2.8MB required to install

DOS
Business Model Attribute Image Freeware / Free-to-play / Public Domain
Media Type Attribute Image Download
Text Modes Supported Attribute Image 80×25
Input Devices Supported Attribute Image Keyboard
Number of Offline Players Attribute Image 1 Player

Mainframe
Business Model Attribute Image Freeware / Free-to-play / Public Domain
Supported Languages and Operating Systems FORTRAN
Input Devices Supported Attribute Image Keyboard
Notes "Originally written for the HP1000 running RTE"

Windows
Business Model Attribute Image Freeware / Free-to-play / Public Domain
Media Type Attribute Image Download
Input Devices Supported Attribute Image Keyboard
Number of Offline Players Attribute Image 1 Player


Technical information contributed by havoc of smeg (22285), Xoleras (66798) and Pseudo_Intellectual (60614)