The 1992 game Comanche: Maximum Overkill by NovaLogic uses a nonstandard DOS extender and an unconventional method to enter protected mode, which works on 386 and 486 processors but can fail on Pentium and later CPUs due to changes in how the Intel Pentium handles the writability of the CS segment in real mode. This subtle CPU architectural difference, combined with variations in system BIOS behavior, causes the original game to crash on some Pentium systems, especially after the first run, though patched and updated versions improve compatibility.
Maximum Overkill | OS/2 Museum
