GBA Cheat Codes: Action Replay & Gameshark Guide (2026)

How GBA cheat codes work, the most useful Pokemon codes, and what browser emulators support.

Stuck on the Elite Four? Want a level 100 Rayquaza before the first gym? GBA cheat codes — Action Replay and Gameshark — make it possible. Here is how they work and how to use them on EggerMath.

Action Replay vs Gameshark: What Is the Difference?

Both devices patch game memory while it runs. Gameshark codes are older raw memory writes (e.g. 030055C4:0064). Action Replay v3+ codes are encrypted and more powerful — walk-through-walls, shiny starters, complete Pokedex in one line. For Pokemon Emerald, Action Replay codes are the standard everyone shares.

The Most Useful Pokemon Emerald Codes

• Rare Candy (PC slot 1): 82005274 0044 — stock up then train anything fast.
• Master Balls: 82005274 0001 — never lose a legendary again.
• Walk through walls: 7881A409 E2026E0C — explore unfinished maps and reach event islands.
• Shiny starter: 1670047D 1501006C — gold, silver and sparkling from the first rival fight.

Do Cheats Work in Browser Emulators?

mGBA — the core behind EggerMath — supports cheat files natively on desktop, but browser builds vary. The reliable path in-browser: play normally and use save states (F5/F9) as your safety net instead. Save before a legendary, throw balls freely, reload if it faints — same result, zero codes needed. For full code support, see our mGBA vs VisualBoyAdvance comparison for the desktop route.

Will Cheats Break My Save?

Bad eggs and corrupted boxes come from stacking conflicting codes (especially walk-through-walls + event triggers). Rule of thumb: enable one code at a time, save with F5 before activating anything, and never save the game with a walk-through-walls code active. See the best GBA games of 2026 for what to play once you are powered up.