Action Replay 4M Plus - Ultimate Saturn RAM, Cheats & Import Adapter

In this review the Action Replay 4M Plus is judged as a practical must-have for anyone restoring or collecting Sega Saturn systems who wants to play import titles and RAM-dependent releases. The single biggest reason to buy is straightforward: it combines a 4M memory card, selectable 1M/4M RAM expansion and an Action Replay cheat function in one cartridge, making it the simplest way to run Japanese imports and RAMrequiring games on a single console. For collectors and players who value compatibility and convenience, this cartridge delivers those essentials without extra modules.

Key Features

• 4M memory card: Provides ample save storage for Saturn games that use larger memory files, removing the need for separate memory accessories.
• 1M and 4M RAM expansion: Auto switchable RAM lets users run titles that require 1M or 4M expansion without swapping hardware manually.
• Action Replay cheat function: Built in cheat compatibility enables code entry and active cheats during gameplay for experimentation or to bypass difficult sections.
• Import adapter: Lets you play foreign region Saturn cartridges on any Saturn console so import libraries are accessible on a single machine.
• All-in-one convenience: Combining memory, RAM expansion and cheat functions reduces clutter and simplifies setup for retro gaming sessions.

Who It's For

This accessory is aimed at Sega Saturn owners, retro collectors, and enthusiasts who want to play Japanese imports or titles that explicitly require RAM carts, such as certain Capcom fighters and Neo Geo conversions. It suits anyone who prefers a single cartridge solution rather than juggling multiple peripheral modules.

It is less relevant for casual players who only run standard region retail games that do not use extra RAM or memory cards, or for those who avoid cheat functionality. If you already have dedicated separate RAM and memory peripherals and prefer original hardware authenticity, this all-in-one may duplicate capabilities you already own.

Pros & Cons

Pros

• Combines memory expansion and RAM options in one cartridge, simplifying setup.
• Enables playing Japanese imports on any Saturn with the built in import adapter.
• Includes Action Replay style cheat compatibility for codes and gameplay tweaks.
• Good value for collectors who need both 1M and 4M support without extra purchases.

Cons

• Not every niche Saturn peripheral is covered; users seeking strict original peripheral authenticity may prefer separate branded modules.

Specifications

Product	Action Replay 4M Plus cartridge
Memory card	4M memory card included
RAM expansion	Auto switchable 1M and 4M RAM
Cheat function	Action Replay compatible codes
Import support	Built in import adapter for foreign cartridges
Compatible systems	Sega Saturn consoles

Our Verdict

The Action Replay 4M Plus is a practical, well rounded accessory for Saturn collectors and players who need both memory and RAM expansion plus import compatibility. It removes the hassle of multiple add ons and provides cheat functionality while offering clear value for money for those who play Japanese imports and RAMdependent titles.

Frequently Asked Questions

Will this let me play Japanese Saturn games?
Yes. The cartridge includes an import adapter so Japanese and other foreign region carts can run on any Saturn console.

Does it provide both 1M and 4M RAM?
Yes. It auto switches between 1M and 4M RAM expansion modes to support games that require either size.

Can I use Action Replay codes with it?
Yes. The built in cheat cartridge function is compatible with Action Replay style codes for gameplay modifications.