Met Abandonware wordt (oude) software bedoeld, waar oorspronkelijk wel copyright op zat, maar die door de makers niet meer wordt geclaimd, bijvoorbeeld omdat het bedrijf niet meer bestaat, of wanneer het te duur zou worden om de copyrights te claimen.

Het gaat meestal om oude computerspellen voor DOS en spelcomputers.

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Four
Developer: John Augustine
Publisher:
Year: 2002
Category: Traditional
Description:
(written by John Augustine)
The object of the game is to be the first player to get 4 of your pieces in
line (next to each other), either in a vertical column, in a row (across), or
diagonally.


Your opponent has artificial intelligence. In time, you will notice that "it" develops into a more challenging opponent as it "learns". Initially, with just a little "knowledge" (FOUR.DTA), it performs well. Don't expect a
dramatic change overnight.


Four was written in Assembly for MS-DOS systems. CGA or better graphics is
required. Uses very little memory, and no installation is required.