Most codes are of the form: 800XXXXX YYYY (16-bit write) or 300XXXXX 00YY (8-bit write). The first four hex digits after 80 / 30 are the memory address; the remaining are the value.
You can force specific characters to pilot different Gears using the base code 8006D940 00xx . Replace xx with 0F for the ultimate Xenogears or 12 for the massive Yggdrasil-IV (though the latter may crash the game outside of battle). How to Use These Codes
Gears are cool; exploding Gears are not. This keeps your giant robot topped up during mech combat. 800B5644 270F xenogears gameshark codes
| Issue | Details | |-------|---------| | | Especially with item or key item codes. Keep a separate save file. | | Event flag breakage | Disabling random encounters before a scripted fight can freeze progression. | | Disc 2 changes | Many addresses shift on disc 2. Codes for disc 1 may not work or may cause crashes. | | Emulator differences | DuckStation uses “GameShark” format; RetroArch may need .cht file conversion. | | NTSC vs PAL | PAL version addresses differ. Use PAL-specific codes if playing European release. |
8009D64C 0010 — A life-saver for exploring the world map or long dungeons without being interrupted every few steps. Most codes are of the form: 800XXXXX YYYY
Keep Fei alive through the toughest boss fights. 800B55F8 270F
80076B9C 0001 (1 EXP to next level, loop with extra code) Replace xx with 0F for the ultimate Xenogears
Note: This can sometimes glitch the story if you acquire items meant for later plot points. Use with caution. 50002802 0000 800B5BC0 FFFF
Addresses for Fei’s learned Deathblow flags (each bit = one move). Example: All Deathblows for Fei: 30076DDB 00FF (partial – actual range spans multiple bytes). Warning: Unlocking Deathblows before their level requirement can crash the battle UI.
Gear combat introduces management, which can be frustrating during long boss fights. These codes ensure your giant robots never run dry.
80008E3D FF38 — One of the most popular codes for the late game, ensuring you can use your most powerful attacks every turn.