Knockout Kings
R4
RarityUncommon
55
FunAverage
Market Value
Loose$9.86
CIB$16.53
New$38.77
Based on recent market activity.Updated Oct 23, 2026
Market Value
Loose$9.86
CIB$16.53
New$38.77
Based on recent market activity.Updated Oct 23, 2026
Knockout Kings
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Current Market ValueLast updated Oct 23, 2026
Rarity
R4
Fun Factor
55
Value History
$20
$16
$11
$7
Apr 20
May 9
May 28
Jun 15
Jul 4
Jul 22
Aug 10
Aug 29
Sep 16
Oct 5
Today
Rarity Insight
R4: Uncommon
Findable with a little looking, but not listed everywhere.
Platform Rarity DistributionHow rarity works
Graded ReportBeta
01
1607080859095100
1graded sale seen
Nerdy Rank
#27
of 69
Genre
Fun Factor rank within this genre
#309
of 442
Rarity
Rarity rank among Game Boy Color games
#262
of 442
Value
Market value rank among Game Boy Color games
#195
of 442
Fun Factor
Fun Factor rank among Game Boy Color games
Nerdy Rank
Sports
Fun Factor rank within this genre
#27
of 69
Rarity
Rarity rank among Game Boy Color games
#309
of 442
Value
Market value rank among Game Boy Color games
#262
of 442
Fun Factor
Fun Factor rank among Game Boy Color games
#195
of 442
Fun FactorWork in progress
Top 45% of Game Boy Color games
Fun Factor distribution across the Game Boy Color library
Below 50
50-59
55
60-69
70-79
80-89
90-100
Scores higher than 55% of Game Boy Color games.How it's scored
Game Details
Knockout Kings is a sports game for the Game Boy Color, released in 1999. A loose copy sells for around $9.86, complete in box $16, and sealed $38. We rate it R4 (Uncommon), findable on GB Color with a little looking, with a Fun Factor of 55.
