Super Robot Taisen F Japan Rev B 21m Free

There are three "Free" states for this game:

The most loaded term. In this context, it means free of cost (i.e., downloadable via abandonware sites or ROM archives) and free of license restrictions (i.e., not locked to a dead console like the original PlayStation). It does not mean free of copyright, but given that Bandai Namco has not re-released SRW F digitally since the PlayStation Network on PSP, the "abandonware" argument persists.

Here is where the collector’s logic kicks in.

Sega Saturn discs have matrix numbers printed on the inner ring. A standard launch copy of SRW F might read T-20108G or something similar. The "Rev B. 21M" indicates a specific manufacturing revision: super robot taisen f japan rev b 21m free

Revisions were usually invisible to the player—bug fixes, typo corrections in the Japanese script, or adjustments to save file detection.

But why does Rev B. 21M matter?

Super Robot Taisen F is the first half of a two-part story (concluded by Super Robot Taisen F Final). Because of this, the story starts slow and builds to a massive cliffhanger. The plot revolves around the "Aerogators" and the moon crashing toward Earth, weaving together the disparate plotlines of the various anime series into a surprisingly cohesive narrative. There are three "Free" states for this game:

If you do not read Japanese, the navigation can be difficult, but the menu icons are intuitive enough that genre veterans can muddle through. The translation patches available in the emulation community (often compatible with the file versions discussed) make the complex plot accessible to English speakers.

Release Year: 1997 Platform: Sega Saturn (Also ported to PlayStation) Region: Japan (Import Required)

For fans of the Strategy RPG genre and the mecha anime culture of the 80s and 90s, few titles command as much reverence as Super Robot Taisen F. Released by Banpresto for the Sega Saturn, this game is often cited as the turning point where the franchise evolved from a niche hobbyist series into a graphical and gameplay powerhouse. While the "Rev B" and "21M" specifications are technical backend details, they represent the robust nature of this massive Saturn title. Here is where the collector’s logic kicks in

Super Robot Taisen (Taisen) F: Japan Rev B 21M Free appears to refer to a specific release/patch/ROM variant of Super Robot Taisen F (known internationally as Super Robot Wars F), a tactical role‑playing game originally released by Banpresto for the Super Famicom (Super Nintendo) in 1997 and later ported and expanded for other platforms. This report covers the game's background, versions and regional releases, notable gameplay and mechanical features, unit and character highlights, scenario and story structure, fan translations/patches and ROM distribution context, technical notes for ROM hacks/variants, legal and preservation considerations, and recommendations for further research or usage.

This is where online forums (2channel, old GameFAQs, and Saturn collecting Discords) have pieced together the puzzle. The original Rev A and early Rev B pressings contained a specific copy protection quirk or save data conflict involving the 21-megabyte internal Saturn memory.

The Saturn’s backup memory was notoriously small (32KB for saves). However, SRW F used a unique "System Data" file combined with scenario branches. Rumors suggest that on certain revision A discs, if your internal memory had exactly 21 megabytes free (possible with a RAM cart or external backup), the game would crash upon loading Stage 36: "Devil's降临."

Banpresto never admitted this publicly. But Rev B. 21M is believed to be the pressing where the master ROM was patched to ignore the "21M free" memory check entirely. Hence, "21M free" became shorthand for the fixed disc: "This copy is safe. You can have 21MB free and it won't crash."