About this game
Need for Speed: Underground is a 2003 racing video game for the game boy advance, developed by EAブラックボックス. It belongs to the Need for Speed series.
Collector's Guide
Region & Compatibility
Unlike the region-locked PlayStation 2, the Game Boy Advance is region-free: a Japanese cartridge plays on a North American or European unit and the reverse, which makes importing simple and is part of why Japanese collectors and overseas buyers meet so easily here. There are small caveats — linking Pokémon games of different languages can misbehave, and the China-only iQue variant is its own case. On power, the original AGB-001 runs on two AA batteries, while the SP and Micro carry built-in rechargeable batteries; there is no mains-voltage worry of the kind that affects a Japanese home console abroad.
Maintenance Tips
The original AGB-001's defining limitation is its unlit screen; many surviving units have been fitted with aftermarket backlit displays, and a modded screen is a genuine value-add rather than a fault. On the folding SP, the most common age problem is the hinge — the plastic around it grows brittle and can crack, though replacement shells fix it. The SP and Micro both use internal rechargeable batteries that weaken with age and can be replaced. Cartridge contacts oxidise like any Game Boy's and clean with a cotton swab and high-strength (91%+) isopropyl alcohol. One save-data note: most Advance games save to battery-free flash memory, but a few titles (such as Pokémon Pinball Ruby & Sapphire) use a small internal battery that, after two decades, may now be failing.
What to Watch Out For
Before buying, these are the points worth knowing — from someone who handles original Japanese Need for Speed: Underground copies regularly.
Which Game Boy Advance model should I buy?
It depends on what you want from the screen. The most sought-after is the late SP, model AGS-101, which has a true backlight and is far easier on the eyes than anything before it — but it looks identical to the earlier front-lit SP (AGS-001), so confirm the seller specifies 'AGS-101', usually printed on the back label. The front-lit AGS-001 is cheaper and still perfectly playable, just dimmer and a little washed-out. The original AGB-001 is for those who want the authentic experience or a unit modified with an aftermarket backlight. Whatever you choose, the model number is the single most important thing to verify before buying.
Does the tiny Game Boy Micro play my old Game Boy games?
No — and this is the most common mistake buyers make. The Game Boy Micro (OXY-001) plays only Game Boy Advance cartridges; its slot is physically smaller, and original Game Boy and Game Boy Color cartridges will not fit. If you want a machine that plays the older games too, choose an SP or the original AGB-001 instead. The Micro is a beautiful object with an excellent screen, but it is Advance-only.
What should I check on a used unit?
Confirm it powers on and loads a game. On an SP or Micro, watch the battery — if it dies within minutes, it needs a replacement cell. Check the SP's hinge for cracks, look at the screen for dead pixels or liquid bleed, and inspect the cartridge slot for corrosion; on the original AGB-001, open the battery compartment and check for leak damage. If a game is included, start it and confirm the save works. A unit described only as 'turns on' has not really been tested.
Will Japanese games work on my console?
Yes. The Game Boy Advance is region-free, so Japanese cartridges run on any GBA and vice versa — one of the friendliest systems for collecting across regions. The main exception is link-play between Pokémon games of different languages, which can misbehave. For single-player, import freely.
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