VMU

Lore & Background

The VMU was mostly purchased separately from the console. Upon initial use, the player is prompted to set the date and time, and then select from a group of bitmap images to serve as the default background for the VMU. Various Dreamcast titles may offer players additional background images for the unit. This image is displayed while the Dreamcast console is in the operating system menu. When operated independently of the Dreamcast console, the VMU acts as a file manager, clock/calendar (with selectable clock animations), and handheld game console. VMUs may also connect to each other directly to facilitate file transfer or multiplayer gaming.

For use as a memory card and second screen, the VMU is plugged directly into one of two slots on a Dreamcast controller. The VMU runs on two CR-2032 lithium batteries inserted into the rear under a screw-secured lid. Without battery power, the VMU still functions as a memory card and auxiliary display, but cannot play downloaded mini-games. Additionally, a VMU without battery power will beep when the Dreamcast is powered on if the VMU is inserted into a connected Dreamcast controller.

Several titles for the Dreamcast include mini-games that can be downloaded onto a VMU. The Sonic Adventure series includes the Chao Adventure mini-games, where players can transfer Chao eggs to the VMU and partake in various activities to increase the stats of their hatched Chao. Sega GT includes Pocket GT, a top-down racer. In other video games, statistics such as current health condition are displayed on the VMU for convenience or to enhance multi-player gaming. There are also numerous homebrew games freely available on the internet that can be installed and played on a VMU, including Metroid, VMU Mini Pacman, Breakout, Space Invaders, Tetris, VMU Fighter, VMU Football, VMU-a-Sketch, and 3D FPS.

Reader's Guide

The VMU is notable as an important evolution of the memory card concept, combining removable storage with a handheld game console and auxiliary display. Its console-like features include a screen, speaker, proper directional pad, four action buttons, the ability to connect and interact with other VMUs, and the ability to download additional games. In a 10-year retrospective, GamesRadar called the VMU one of their favorite storage devices, praising its originality and flexibility while noting that most games did not find a useful purpose for it and that the device drained batteries quickly. In 2024, Time Extension called the VMU an important evolution of the memory card concept. Multiple Dreamcast memory cards with no VMU features have been released, including Sega's official 4x Memory Card offering four times the data storage of a standard VMU, and various third-party cards such as the Nexus Memory Card, Nyko's Jumbo Memory Pak X2 and Hyperpak, and Performance memory cards. In September 2023, following a successful crowdfunding campaign, Dreamware Enterprises released an aftermarket VMU update called the VM2, featuring a backlit screen, rechargeable battery with USB-C support, and MicroSD storage.

Did You Know?

• A special Godzilla edition VMU, preloaded with a virtual pet game, was released on July 30, 1998, in Japan.
• The VMU has 128 KB of flash memory, with 100 KB available for data storage divided into 200 blocks of 512 bytes each.
• Homebrew programs can unlock an extra 44 blocks (22 KB) of reserved space, increasing capacity to 244 blocks, though a handful of games may be unable to detect the card if this is done.

A Fifteen-Year Sprint: Timeline & Competitive Landscape

The sixth generation of video game consoles opened its curtain on November 27, 1998, when Sega's Dreamcast hit shelves, and it did not close until the very last PlayStation 2 titles arrived in 2013. Four major manufacturers entered the fray during those fifteen years: Sony released the PlayStation 2 in March 2000, Nintendo followed with the GameCube in September 2001, and Microsoft launched the Xbox in November of that same year. The retirement order told a different story from the launch order. The Dreamcast was the first to be pulled from the market in 2001, followed by the Xbox in 2006, the GameCube in 2007, and finally the PlayStation 2 in 2013. The generation also bled into the next one, as the Xbox 360 arrived on November 22, 2005, while sixth-generation hardware was still being sold. In fact, GameCube units were still being manufactured when the Wii debuted in late 2006, and the PlayStation 2 was still in production after the Wii U's 2012 launch. This remarkable overlap made the sixth generation the second-longest console era in history.

Wiring Up the Living Room: The Internet Revolution

The defining technological leap of this era was the full embrace of the internet as a core gaming feature rather than a novelty. Earlier systems like the Apple Pippin had offered online connectivity, but they achieved so little market penetration that the feature barely registered with the broader audience. The sixth generation changed that equation entirely. Microsoft's Xbox, in particular, made online play an industry standard through Xbox Live, a service whose influence carried into every subsequent generation. The Xbox also pioneered two hardware features that reshaped how players interacted with their consoles: a built-in ethernet port and an internal hard disk drive. The hard drive allowed developers to store program data alongside save files, dramatically cutting load times, and it opened the door to downloading games directly over the internet instead of purchasing physical discs or cartridges. Sony responded by producing peripheral storage devices for the PlayStation 2, and by the time the seventh generation arrived, internal storage had become the expected norm across the industry.

Beyond the Bit Wars: Marketing Myths & Real Performance

For decades, console marketing departments leaned heavily on a single number to signal raw power: the CPU word size, expressed in bits. The fifth generation had been defined by the 64-bit versus 32-bit debate, and the sixth generation carried that tradition forward in its early days, with both the Dreamcast and the PlayStation 2 promoted as 128-bit graphics machines. However, the industry quickly moved past this metric. Once a processor reaches 32 or 64 bits of word size, simply doubling that number yields diminishing returns. Real-world performance depends on a far broader mix of factors, including clock speed, memory bandwidth, and the size of available memory. The bit-rating label, once a reliable shorthand for a faster machine, became increasingly misleading and was largely abandoned in consumer-facing marketing. The rare holdouts in this generation were the Dreamcast and PS2 promotional materials, which still invoked the 128-bit figure at the start of the era, but by the mid-2000s the conversation had shifted decisively toward more meaningful performance indicators.

The Long Reign of the PlayStation 2: Sales & Legacy

No console in this era came close to matching the PlayStation 2's commercial footprint. By November 2024, Sony's machine had surpassed 160 million units sold worldwide, cementing its place as the best-selling console of all time. The Xbox trailed at over 24 million units as of May 2006, the GameCube reached 21.74 million by September 2010, and the Dreamcast, despite launching first, finished last with 9.13 million. The PlayStation 2's longevity was remarkable: it continued to outsell both the PlayStation 3 and Xbox 360 in the United States as late as February 2008, buoyed by its enormous software library, ongoing developer support, and an affordable price point. Games were still being produced for the PS2, Xbox, and GameCube into 2008, and the final PS2 titles appeared in 2013, with Final Fantasy XI: Seekers of Adoulin in Japan in March, FIFA 14 in North America in September, and Pro Evolution Soccer 2014 in Europe in November. The Dreamcast's last official titles came in 2002 for North America and Europe, though a handful of small-run NAOMI arcade ports appeared in Japan as late as 2007.