| GAME | YEAR | MANUFACTURER | MAME ROM's NAME | HISTORY.DAT |
|---|---|---|---|---|
| IO4 PROM and flashio Patches | 1996 | Silicon Graphics | io4_prom_patch | Add it |
| O2 Out of Box Experience 2.2 for IRIX 6.5 | 1998 | Silicon Graphics | o2_oobe_2_2 | Add it |
| OCTANE Demos 1.3 and OCTANE2 Demos 1.0 for IRIX 6.5.9 and later | 2000 | Silicon Graphics | oct2_demos_1_0 | Add it |
| Octane2 VPro Patches 3927 for 6.5.8m and 3928 for 6.5.8f | 2000 | Silicon Graphics | oct2_vpro_patch1 | Add it |
| Octane2 VPro Patches 4103 for 6.5.10m and 4104 for 6.5.10f | 2000 | Silicon Graphics | oct2_vpro_patch3 | Add it |
| Onyx2 - As Real As it Gets Demo CD - Volume 1 | 1998 | Silicon Graphics | onyx2demo1 | Add it |
| Onyx2 - As Real As it Gets Demo CD - Volume 2 | 1998 | Silicon Graphics | onyx2demo2 | Add it |
| Onyx2 - As Real As it Gets Demo CD - Volume 3 | 1998 | Silicon Graphics | onyx2demo3 | Add it |