How Multigame Upgrade Kits Work on Original Arcade PCBs

By HighScoreSaves Technical Team

Reviewed and updated August 20, 2026

A multigame upgrade can add several compatible games or game versions to one original arcade PCB without replacing the cabinet with a generic emulation system.

HighScoreSaves multigame kits are designed around specific original hardware platforms. The daughterboard adds game-selection, score-saving, Free Play, ROM Saver, settings, and other supported features while the original PCB remains the foundation of the system.

This guide explains how multigame upgrades use original hardware, how separate score tables and game selection work, why controls and monitor orientation matter, and what to verify before ordering.

Original-PCB Multigame Kits at a Glance

The original arcade PCB remains installed and active.
The daughterboard adds multiple supported games or versions.
Included games are limited to hardware the kit was designed to support.
Supported games can have separate high score tables.
Many kits offer Free Play and normal Coin-Up operation.
Some products include ROM Saver and selectable boot behavior.
Cabinet controls and monitor orientation can affect compatibility.
Optional 2.4 GHz Wi-Fi is available on supported versions.
The exact PCB and installation guide must be verified before ordering.

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What Is an Original-PCB Multigame Upgrade? Why the Original Hardware Platform Matters How Game Selection Works Separate High Score Tables Free Play and Coin-Up Behavior ROM Saver and Program Data Cabinet Controls Can Affect the Available Experience Selectable Boot and Settings Behavior Multigame Does Not Necessarily Mean Emulation Multigame Compatibility Checklist Support

What Is an Original-PCB Multigame Upgrade?

A multigame upgrade adds multiple supported games or game versions to one compatible original arcade hardware platform. The original PCB remains installed instead of being replaced by a generic multigame computer.

The daughterboard supplies the additional program logic and selection functions that were designed for the specific arcade PCB. The original board continues to provide the hardware environment required by the supported titles.

Because the games must be compatible with that platform, a multigame kit is not simply a list of unrelated arcade ROMs placed on one board.

Why the Original Hardware Platform Matters

Classic arcade games were built around specific CPUs, video circuitry, sound hardware, input systems, memory maps, custom logic, and board layouts. A multigame upgrade has to work within those electrical and hardware limits.

This is why HighScoreSaves multigame products identify the original PCB or family of PCBs they support. Cabinet artwork or the name on the marquee is not enough to establish compatibility.

A conversion, bootleg, reproduction, or repaired board may differ in ways that affect whether the kit can operate.

How Game Selection Works

Supported multigame kits provide a method for choosing among the included games or versions. Depending on the product, selection may happen through an on-screen menu, a player-button hold, a boot setting, or another game-specific control method.

Some HighScoreSaves multigame designs allow the player to hold Player 1 for several seconds during attract mode to reach the game-selection menu. Other products may use different controls.

Always follow the specific product instructions rather than assuming every multigame kit uses the same menu sequence.

Separate High Score Tables

A well-designed multigame kit can preserve separate score information for the supported games instead of forcing every title to share one table.

The exact number of entries, initials format, ranking rules, and saved information depend on the individual game. The upgrade software handles these differences in a game-specific way.

On supported Wi-Fi versions, online leaderboard behavior can also vary by game.

Free Play and Coin-Up Behavior

Many multigame upgrades support both Free Play and normal coin operation. Free Play allows the cabinet to be enjoyed without repeatedly opening the coin door or modifying the original coin mechanisms.

Coin-Up operation preserves the ability to run the cabinet in a more traditional credit-based mode when desired.

The exact menu choices and whether a setting applies globally or separately to individual games depend on the kit.

ROM Saver and Program Data

Some multigame kits include ROM Saver functionality. On those products, specified original program ROMs may be removed from active use while the daughterboard provides the required program data for the supported game set.

Only the ROMs specifically identified in the installation guide should be removed. Graphics ROMs, sound ROMs, PROMs, or other chips that look similar may still be required.

Removed originals should be labeled by game and PCB location and stored in appropriate anti-static packaging.

Cabinet Controls Can Affect the Available Experience

Adding another compatible game does not automatically add physical controls that the cabinet never had. A multigame design may therefore use cabinet-aware control mapping, alternate button behavior, or product-specific control instructions.

Horizontal versus vertical monitor orientation can also matter. The product page should identify the intended cabinet and hardware arrangement.

Before ordering, verify the cabinet controls and original PCB rather than assuming that every supported title will control identically.

Selectable Boot and Settings Behavior

Some multigame products allow the owner to choose whether the cabinet starts at a menu, starts the last-selected game, or boots a particular game automatically.

Settings may also control attract sounds, Free Play, coin behavior, Wi-Fi, and other game-specific options.

On HighScoreSaves products that use a settings menu reached at power-up, the exact Player 1 procedure is documented in the product instructions. Follow the guide for the specific kit.

Multigame Does Not Necessarily Mean Emulation

The word multigame is often used for many different arcade products, including emulation computers, replacement JAMMA boards, FPGA systems, and original-PCB daughterboards.

A HighScoreSaves original-PCB multigame kit is designed around compatible original arcade hardware. The presence of several games does not mean the original PCB has been replaced by a general-purpose emulator.

When comparing products, identify the underlying hardware rather than relying only on the word multigame.

Multigame Compatibility Checklist

The exact original PCB or supported PCB family has been identified.
The CPU type and socket condition have been checked.
The included games and versions match what you want to play.
The cabinet monitor orientation is compatible.
The cabinet controls support the required game functions.
Free Play or Coin-Up behavior has been reviewed.
Separate high score table behavior has been confirmed.
ROM Saver requirements, if any, have been reviewed.
Optional Wi-Fi support has been confirmed when desired.
The installation guide has been read before removing the CPU or ROMs.

Product Pages and Installation Guides Are the Final Authority

Features, compatibility, board revisions, CPU requirements, adapters, ROM changes, settings, and installation steps vary by game and kit.

Always use the specific HighScoreSaves product page and game-specific installation guide for the exact kit being installed. Those instructions are the final authority for compatibility, features, and installation.

Technical Support

If the exact PCB, kit configuration, component orientation, or installation requirement is uncertain, stop before applying power or making additional changes.

Email is the preferred support method. Contact sales@highscoresaves.com and include the game title, exact kit, and clear photos of the complete PCB and the area in question.

Disconnect cabinet power before removing or installing arcade PCB components. Verify the exact board, Pin 1 orientation, socket condition, and game-specific instructions before applying power.