CatFlash GG (4Mbit GameGear Flash Cartridge)
Description
Put your own ROM on real hardware. The CatFlash GG is a reprogrammable 4 Mbit (512 kB) flash cartridge for the Sega Game Gear.
Perfect for homebrew releases, dev builds, demos, and getting a single game running on an original console.
An onboard CPLD mapper handles Sega-style bank switching, so it runs games well beyond the standard cartridge size limit, and it's fully compatible with devkitSMS banked code. Saves are written straight to flash — no battery to or replace — and the board drops into a standard cartridge shell for a clean, original-looking cart.
Built on raphnet's proven open design, manufactured and tested by Two Black Cat Games. In stock and ready to ship.
- 4Mbit (512kB)reprogrammable flash
- Works on Game Gear
- CPLD mapper with Sega-style banking (devkitSMS compatible
- Flash-based saves possible
- Native 5 V operation
- Fits standard cartridge shells (shell not included)
Shipping
- EU: 3–7 business days. Free over €50.
- UK: 4–8 business days. Free over £45.
- US: 5–10 business days. Free over $75.
- Japan: 7–14 business days. Free over ¥8,000.
- Rest of world: 10–21 business days. Tracked international shipping calculated at checkout.
Returns
We accept returns within 30 days of delivery for unopened, unused items in original packaging. Buyer covers return shipping unless the item arrived damaged or defective.
See the full refund policy for details, or contact us if anything's wrong with your order.
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