When does Koi-Koi Japan [Hanafuda playing cards] get good?

Hooks you almost right away. In the first 2 hours 1 in 7 reviews are negative (15%); after 5h it's 1 in 14 (7%). The opening is criticised less than in 82% of games we track.

All games

Casual

Koi-Koi Japan [Hanafuda playing cards]

Apr 27, 2015 Steam: Very Positive

Hooks you almost right away

Gets good by 1h almost every game dips in hours 2–3

Started playing 57% of owners

Steam reviews 92% positive of 1,170

What the data shows

In the first 2 hours 1 in 7 reviews are negative (15%); after 5h it's 1 in 14 (7%).
The opening is criticised less than in 82% of games we track.
Few early reviews, so this is a rough estimate.
Only 57% of owners have even the first achievement — the rest barely played.

When it gets good

Share of positive reviews by how many hours the reviewer had played when writing the review.

before it gets good opening up fully opened up

Based on all 1,176 Steam reviews in every language. Median playtime in a sample of 294 reviews: 5.9h for positive, 7.4h for negative. Almost every game is rated lower in the first 2–3 hours: that window includes refunds and quick first impressions. What matters is how deep the dip is and how fast the game recovers.

Where players quit

Share of players who started the game and reached each story milestone. 100% is the most common achievement (56.6% of owners), so people who bought the game and never launched it don't count.

Story milestones aren't labeled yet; all achievements are listed below.

All achievements (35)

Koi Koi Success Call Koi Koi, form a new Yaku, and call Stop. 100%
Form 3 Yaku Form 3 Yaku or more in 1 round. 100%
Moon and Cup Complete "Moon and Cup" Yaku. 94%
Cherry Blossom and Cup Complete "Cherry Blossom and Cup" Yaku. 94%
Earn 10 Points Earn 10 points or more with 1 Stop. 89%
First Victory Defeat opponent for the first time. 89%
Light Three Complete "Light Three" Yaku. 89%
Boar, Deer, Butterfly Complete "Boar, Deer, Butterfly" Yaku. 81%
Koi Koi Block Call Stop after your opponent calls Koi Koi. 81%
Red Ribbon Complete "Red Ribbon" Yaku. 80%
Rain Light Four Complete "Rain Light Four" Yaku. 80%
Blue Ribbon Complete "Blue Ribbon" Yaku. 79%
Hanafuda Beginners Quit Tutorial Mode. 77%
Form 5 Yaku Form 5 Yaku or more in 1 round. 76%
5 Successive Wins Get 5 successive wins. 62%
Light Four Complete "Light Four" Yaku. 54%
10 Wins Win 10 times. 48%
"Boar, Deer, Butterfly" 5 Times Complete "Boar, Deer, Butterfly" Yaku 5 times. 47%
Earn 20 Points Earn 20 points or more with 1 Stop. 47%
"Light Three" 10 Times Complete "Light Three" Yaku 10 times. 44%
Light Five Complete "Light Five" Yaku. 42%
10 Successive Wins Get 10 successive wins. 39%
[Multiplayer]Hanafuda Beginners [Multiplayer]Quit Multiplayer Mode for the first time. 32%
[Multiplayer]First Victory [Multiplayer]Defeat opponent for the first time. 28%
Conquer the Country Defeat opponents from all areas in Collection Mode. 21%
Red and Blue Ribbons Complete "Red and Blue Ribbons" Yaku. 20%
Complete All Yaku Complete all Yaku. 17%
Postcard Complete Collect each variety of postcard. 17%
[Multiplayer]10 Wins [Multiplayer]Win 10 times. 11%
100 Wins Win 100 times. 9.9%
"Light Four" 10 Times Complete "Light Four" Yaku 10 times. 8.0%
[Multiplayer]Earn 20 Points [Multiplayer]Earn 20 points or more with 1 Stop. 6.7%
"Light Five" 10 Times Complete "Light Five" Yaku 10 times. 5.3%
500 Wins Win 500 times. 4.1%
[Multiplayer]100 Wins [Multiplayer]Win 100 times. 3.7%

Steam page Updated: 2026-10-20.