Hack103 and Ansi.sys
Hack (1985) was arguably one of the greatest PC games of all time. Currently, it has evolved into NetHack (see wikipedia), but the original version from the dawn of the PC era is here for fun.
For the old Hack103 game, one needs the ansi.sys
to be loaded to get the movement commands working
To get the ansi.sys loaded into the command prompt,
do the following
add the line