HT Games
No cheat code exists to unlock all content in Grand Theft Auto IV. Progression (missions, map areas, weapons, outfits) is tied to story completion.
| Effect | Code |
|---|---|
| Full Health & Armor | 362‑555‑0100 |
| Full Health, Armor, Ammo | 482‑555‑0100 |
| Weapons Tier 1 (Base) | 486‑555‑0150 |
| Weapons Tier 2 (Advanced) | 486‑555‑0100 |
| Remove Wanted Level | 267‑555‑0100 |
| Raise Wanted Level | 267‑555‑0150 |
| Spawn Annihilator Helicopter | 359‑555‑0100 |
| Spawn NRG 900 (Sport Bike) | 625‑555‑0100 |
| Spawn SuperGT (Sports Car) | 227‑555‑0168 |
| Change Weather | 468‑555‑0100 |
Consequences: Activating cheats disables Achievements/Trophies for the current session. Saving with cheats active permanently marks the save file as "Cheated" (blocks 100% completion achievements).
To unlock everything legitimately: Complete all story missions, 100% friend activities, 200 pigeons, 50 stunt jumps, and all random encounters.