What platforms is Nekkyuu Koushien on?

Nekkyuu Koushien was released on Sega Master System/Mark III.

When did Nekkyuu Koushien release?

Nekkyuu Koushien was first released on September 9, 1988.

Nekkyuu Koushien

Sep 9, 1988SportSega Master System/Mark III

Nekkyuu Koushien — frequently asked questions

What platforms is Nekkyuu Koushien on?: Nekkyuu Koushien was released on Sega Master System/Mark III.
When did Nekkyuu Koushien release?: Nekkyuu Koushien was first released on September 9, 1988.

About Nekkyuu Koushien

Nekkyuu Koushien is a baseball game for the Sega Master System. It was only released in Japan.

Summary via IGDB.

Every version compared

Prices, contemporary reception and the studio credited for each release

Platform	Year	Loose	Complete	Sealed	Fake risk
Sega Master System	1988	$12	$31	—	Low (look-alike)

Also released on: Sega Master System/Mark III. We haven’t priced or authenticated that version yet.

Collector value & authenticity

Sega Master System · PriceCharting sold data · Verified 2026-10-28

Loose

$12

few sales

Complete

$31

few sales

Sealed

—

How often it sells

Loose: about once 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 2026-10-28.

Price over time

Loose
Complete

A loose copy sold for about $8.50 in Apr 2022, and $11.98 as of Oct 2026.

Show as table

Month	Loose	Complete
Jan 2023	$10.00	$22
Jan 2024	$10.27	$23
Jan 2025	$11.98	$32
Jan 2026	$11.98	$31
Oct 2026	$11.98	$31

Monthly price estimates from PriceCharting's completed-sale records, sampled quarterly, through Oct 2026.

Release record

Territory	Date	Product number	Known board
Japan	9 September 1988	G-1367	171-5441 · MPR-11886

Source: Product numbers: MAME's Master System software list and the No-Intro serial records in the libretro database, published only where both agree on the same cartridge dump; Japanese numbers also checked against Sega Japan's software list. Board and ROM numbers: MAME's software list

Region: JP
Released: 1988
Authenticity: Low

Modern re-releases, such as Sega Ages and Virtual Console, are not tracked hereLow look-alike risk

Sega Master System prices, all games & how to spot a fake

A Japan-only Sega cart that sits near the bottom of the Japanese prices.

Nekkyuu Koushien was developed by Whiteboard and published by Sega, released in Japan on 9 September 1988.

Before you buy

This is a Japanese cart, a different, smaller shape that does not fit a Western console without an adapter. The loose price is near the cheaper end of the Japanese-only carts, and the look-alike risk is low.