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200121: Two One game familyGame family

Sega · Game family

21: Two One

21: Two One, was released for Sega Dreamcast in Japan on 2001-12-27. Its documented physical format is GD-ROM. PLAYBACK links 1 documented physical package to this game family.

Verified catalog factsA source-linked factual history appears below. Undocumented development, regional, and package details are left unclaimed.

21: Two One is documented as a physical GD-ROM release for Sega Dreamcast. The archive records this package family for Japan with a documented release date of 2001-12-27. This family currently groups 1 documented physical package.

Released
December 27, 2001
Platform / family
Sega Dreamcast
Format / type
GD-ROM
Region
Japan
Exact physical item

Source-verified package identity

1 ID

This panel separates the exact physical package from its broader game family. Only identifiers and contents tied to a stored source are shown as verified.

Verified identifiers

Documented package components

Manuals, inserts and extras not listed here have not yet been source-verified. They are not assumed absent.

Catalog source ↗Image source ↗Suggest a correction ↗

Documented item history

Release and collector context

Source-linked facts

21: Two One's developer and publisher are not identified in the archive's current structured sources. The source-linked collector record documents a GD-ROM release for Sega Dreamcast in Japan, dated December 27, 2001.

Research status
Structured source record
01

Release context

The documented release is December 27, 2001 for Japan on Sega Dreamcast. Date precision is preserved exactly: the archive does not invent a day when the source records only a month or year.

02

Regional differences

This record is scoped to Japan. The linked structured source does not document a separate regional title or package difference, so PLAYBACK does not infer one.

03

Physical packaging

The physical format is documented as GD-ROM. The current structured source does not enumerate every insert, manual, sleeve, or bonus item, so no unverified contents are claimed.

04

Editions and revisions

No separate limited, bundle, or collector's edition is currently documented beneath this game family.

Research sources

  1. en.wikipedia.org — catalog record ↗