No. Neo 21 is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. Its live popularity is tracked here via Twitch viewership instead.

What platforms is Neo 21 on?

Neo 21 is available on Neo Geo Pocket Color.

When did Neo 21 release?

Neo 21 was first released on January 1, 1999.

Neo 21

Jan 1, 1999SportNeo Geo Pocket Color

Neo 21 — frequently asked questions

Is Neo 21 on Steam?: No. Neo 21 is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. Its live popularity is tracked here via Twitch viewership instead.
What platforms is Neo 21 on?: Neo 21 is available on Neo Geo Pocket Color.
When did Neo 21 release?: Neo 21 was first released on January 1, 1999.

About Neo 21

One of many casino games developed by Dyna for the Neo Geo Pocket Color.

Summary via IGDB.

Game details

Publisher: DYNA

Details via IGDB.

Collector value & authenticity

Neo Geo Pocket Color · PriceCharting sold data · Verified 2026-08-07

Loose

$85

Complete

$300

Sealed

$400

Region: NA+EU+JP
Released: 2000
Authenticity: High

Never re-released — the original cartridge is the only way to playHigh counterfeit risk

Neo Geo Pocket Color prices, all games & how to spot a fake

A blackjack cartridge whose complete-in-box price is one of the odder facts on this platform.

Neo 21 is blackjack, part of DYNA's run of casino titles for the console, and there is not much to say about the game itself — it does what it says. What makes it notable is the market: it arrived at the very end of the Western life of the platform, in early 2000, and complete copies now command several times the loose price.

That gap is a scarcity story about a small final print run, not a quality story.

Before you buy

The risk here is entirely in the packaging — the box and manual are worth substantially more than the cartridge, which is exactly the condition under which reprinted inserts appear. Examine the manual for period-consistent paper and staple wear.