You may have a message, while playing, indicating there isn't enought
memory to continue the game. 

In this case, just remove resident softwares ( for example HIMEM.SYS,
SMARTDRV.SYS, VDISK.SYS etc.. ) by modifying files AUTOEXEC.BAT and
CONFIG.SYS.

Please verify that you have at least 550 Kb of free RAM ( using CHKDSK ).
