Features

  • Easy installation: No soldering, board modifications, or special wiring—just plug in and play.
  • Reliable score saving: Uses serial EEPROM instead of failure-prone NVRAM or batteries.
  • High Score Save: Stores the Top 7 scores.
  • Attract Sounds: Play sound during 100% of attract screen rotations.
  • Freeplay mode: Unlimited play without coins.
  • Coin-Up support: Quarters/tokens still accepted if desired.
  • Attract Mode: Prevents static images, reducing screen burn.
  • On-screen DIP settings: Adjust game options from the menu without opening the cabinet.
  • ROM Saver: Option to remove original program ROMs to reduce power use.
  • Cabinet compatibility: Works with Upright and Cocktail cabinets.

Additional Features

  • Separate score tables: Eight different high-score tables—one for each difficulty and lives setting.
  • Backup & Restore: Save and restore scores for tournaments, parties, or practice sessions.
  • Stealth Mode: Boots to look like the original game while retaining save kit functions.

Important

  • This kit requires a Z80 processor.
  • Ensure your processor is socketed. If not, install a 40-pin socket for proper operation.
  • Always review the official Installation Guide before setup.

Just the FAQ's

How many scores are saved?

This kit saves the Top 7 scores on-screen.

Does this kit support Freeplay and coin use?

Yes. You can enable Freeplay or keep Coin-Up enabled to continue using tokens or quarters.

Are separate score tables included?

Yes. There are eight distinct high-score tables, one for each difficulty and lives setting.

What is Stealth Mode?

Stealth Mode makes the kit boot up to look like the original game while maintaining all save kit functionality.

Which processor does this kit require?

This kit requires a Z80 processor. Ensure it’s socketed or install a 40-pin socket before setup.

Where can I download the Installation Guide?

You can download it here: Cosmic Avenger Installation Guide (PDF).

Important Information Regarding Your Purchase and Delivery
Ways to Pay | Shipping | Returns | Contact Us
Ways to Pay

In most categories, the following payment methods are accepted:

Please note:
  • American Express is not accepted on eBay.
  • Checks and money orders are not accepted.
  • Alipay is available for buyers in mainland China, but only on items listed in USD on eBay.com. To use Alipay, sign in to your eBay account and select it at checkout (if available).

You do not need a PayPal account to pay. When directed to the PayPal page, you may enter your credit card information directly.

Sales tax is required on all eBay purchases. The total tax is automatically calculated by eBay based on your location at checkout.

Shipping
Domestic Buyers
International Buyers
Returns

Please give us the opportunity to resolve any issues before leaving feedback.

  1. 30-Day Satisfaction Guarantee
    – All products are backed by this guarantee. Items must be returned in their original condition for a refund or replacement.
  2. Defective or Non-Functional Items
    – These items will be fully refunded or replaced once returned.
  3. If your order arrives incorrectly or is damaged due to the carrier, you must notify us within 72 hours of delivery.
  4. For quality issues or malfunctions, please contact us immediately so we can resolve the issue quickly.
  5. Returned items must be securely packaged and shipped with tracking. We cannot be held responsible for lost or damaged return shipments.
Contact Us

Customer satisfaction is our top priority. While we strive for perfection, mistakes can happen. When they do, we take responsibility and work to resolve the issue—even before you notice it, whenever possible. As the saying goes, “mended fences are often stronger than those never tested.”

If your experience does not meet or exceed expectations, please let us know immediately. We are committed to earning your loyalty.