Mahjong Cop Ryuu: Shiro Ookami no Yabou
Mahjong Cop Ryuu: Shiro Ookami no Yabou — frequently asked questions
- What platforms is Mahjong Cop Ryuu: Shiro Ookami no Yabou on?
- Mahjong Cop Ryuu: Shiro Ookami no Yabou was released on Sega Mega Drive/Genesis.
- When did Mahjong Cop Ryuu: Shiro Ookami no Yabou release?
- Mahjong Cop Ryuu: Shiro Ookami no Yabou was first released on December 14, 1989.
About Mahjong Cop Ryuu: Shiro Ookami no Yabou
Mahjong Cop Ryuu: Shiro Ookami no Yabou is a 1989 mahjong game for the Sega Mega Drive by Sega.
Summary via IGDB.
Game details
- Developer
- Whiteboard
- Publisher
- Sega
Details via IGDB.
Every version compared
Prices, contemporary reception and the studio credited for each release
| Platform | Year | Loose | Complete | Sealed | Fake risk |
|---|---|---|---|---|---|
| Sega Genesis | 1989 | $4 | $17 | — | Low |
Also released on: Sega Mega Drive/Genesis. We haven’t priced or authenticated that version yet.
Collector value & authenticity
Sega Genesis · PriceCharting sold data · Verified 2026-10-29
How often it sells
- Loose: about 2 times a year
- Complete: about once a year
- Sealed: rarely — fewer than one recorded sale a year
Prices marked “few sales” rest on about one recorded sale a year, so treat them as a rough guide: the next copy could sell well above or below. Expect to wait for one to come up.
Sales frequency from PriceCharting's completed-sale records, as of 2026-10-29.
Price over time
- Loose
- Complete
A loose copy sold for about $7.50 in Jan 2021, $7.50 five years ago, and $4.17 as of Oct 2026.
Show as table
| Month | Loose | Complete |
|---|---|---|
| Jan 2021 | $7.50 | $15.00 |
| Jan 2022 | $7.31 | $15.00 |
| Jan 2023 | $4.25 | $8.66 |
| Jan 2024 | $2.09 | $8.64 |
| Jan 2025 | $2.09 | $8.64 |
| Jan 2026 | $5.03 | $18.13 |
| Oct 2026 | $4.17 | $17.14 |
Monthly price estimates from PriceCharting's completed-sale records, sampled quarterly, through Oct 2026.
Release record
| Territory | Date | Product number |
|---|---|---|
| Japan | 14 December 1989 | G-4015 |
- Region
- JP
- Released
- 1989
- Authenticity
- Low
A Japan-only mahjong game from Sega that is one of the cheapest carts of its kind.
Mahjong Cop Ryu: Shiro Ookami no Yabo is a mahjong game developed by Whiteboard and published by Sega. It came out only in Japan, on 14 December 1989, so it is for players comfortable with mahjong in Japanese.
Before you buy
Japanese cartridges are a different shape from Western ones and do not fit a Western console without an adapter or removing two plastic tabs in its slot. Among Japan-only carts it is one of the cheapest.
Watch on YouTube
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