Tony Hawk's Underground (GBA) Cheat Codes: None Official—Legit Progression Tips

No official cheat codes exist for Tony Hawk's Underground on Game Boy Advance. The GBA version is a distinct 2D isometric game (developed by Vicarious Visions) with a focus on progression through objectives.

Legitimate Progression Tips

• Master the manual/revert system: Chain combos across gaps for massive scores.
• Collect all stat points: Hidden in each level; maxing stats makes goals trivial.
• Unlock better boards: Complete sponsor challenges; each board improves stats.
• Use the map: Press Select to see objective locations and gaps.
• Adjust difficulty: Options menu lets you lower goal requirements.

The GBA THUG is challenging but fair—practice and exploration are the intended path.