1.0·Every feature free until Premium arrives in October
King Boo achievements, rarest first.
Every achievement in King Boo, ranked by how many Steam players have unlocked it. Global completion rates from Steam, refreshed daily.
The rarest achievement
Gardener
29%
of players
- Achievements
- 12
- Rarest
- 29%
- Ultra rare (under 5%)
- 0
- Average completion
- 62%
1
Gardener
Grow 20 flowers
29%
2
King of the Realm
Complete all levels
42%
3
Heir to the Throne
Complete the largest level
44%
4
Loot collector
Open 20 chests
46%
5
Item collector
Collect 50 items
61%
6
Where am I?
Float 10 balloons
65%
7
It's the Bat!
Find your bat friend
66%
8
Admiral Boo
Travel by boat
70%
9
Colorful
Paint yourself in another color
70%
10
Aspiring King
Complete a medium-size level
72%
11
Oops!
Fall 10 times
84%
12
First steps
Complete the tutorial level
93%
Percentages are Steam's global unlock rates across all players who own King Boo, refreshed daily. Under 5% is marked in the lit blue.