GameShark Codes for Eternal Poison (PS2/PSP): None Officially Exist

No official GameShark / Action Replay codes were released for Eternal Poison (PS2 / PSP — not Saturn).

Why Codes Are Scarce

• Platform: PS2/PSP cheat devices (GameShark, AR Max, CodeBreaker) had limited code databases for niche JRPGs.
• Complex Engine: Eternal Poison (Flight-Plan / Atlus) uses a unique isometric SRPG engine with heavy scripting—memory addresses shift per battle.
• Small Community: Cult classic → few code hunters.

What to Do Instead

• Walkthroughs: GameFAQs, Neoseeker, RPGClassics have full maps, recruit guides, and strategy.
• Emulator Cheats (PCSX2 / PPSSPP): Cheat engines (Cheat Engine, built-in Pnach/CWCheat) let you search values (HP, MP, Gold, Item counts) dynamically—more reliable than static codes.
• New Game+: Carries over levels/items; eases difficulty legitimately.
• Grind Smart: "Majin" capture mechanics reward experimentation; use the compendium.

If you're on original hardware with a cheat disc, you're likely out of luck. Emulation + cheat search is the modern path.