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Cities: Skylines Achievements

Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.

Total achievements135
Rarest rate0.000%
Ultra rare49
Last checkedSep 25, 2026
Delayed official data

Rates and award counts were last observed on Sep 25, 2026.

81
Run, Bambi!

Experience a forest fire

Very rare
2.50%last reported global rate
82
Medic!

Build the Medical Center Monument

Very rare
2.60%last reported global rate
83
Happy Town

Have more than 95% city happiness for 5 years

Very rare
2.70%last reported global rate
84
Leisure Suites

Have 1000 squares of leisure specialized commercial zone

Very rare
2.70%last reported global rate
85
Playing With The Boys

Have 1000 squares of beach specialized commercial zone

Very rare
2.70%last reported global rate
86
New Eden

Build the Eden Project Monument

Very rare
2.80%last reported global rate
87
A Huge Hadron

Build the Hadron Collider Monument

Very rare
2.90%last reported global rate
88
Short Fuse

Build the Fusion Power Plant Monument

Very rare
2.90%last reported global rate
89
The Park To Rule All Parks

Have a maximum level park made with Park Tool

Very rare
3.10%last reported global rate
90
We need snorkels!

Experience a tsunami

Very rare
3.10%last reported global rate
91
I Want It All

Unlock every single building in the game

Very rare
3.20%last reported global rate
92
Friendly Teaching

Build one of each eco-friendly schools: Community School, Institute of Creative Arts and Modern Technology Institute

Very rare
3.30%last reported global rate
93
Get Your Snowshoes Ready!

Experience snowfall

Very rare
3.40%last reported global rate
94
It's Wintertime!

Change Chirper to a winter look

Very rare
3.40%last reported global rate
95
Thunder and Lightning

Experience a thunderstorm

Very rare
3.80%last reported global rate
96
Drop the Base

Experience a sinkhole

Very rare
3.90%last reported global rate
97
It's heading right for us!

Experience a meteor strike

Very rare
3.90%last reported global rate
98
Twist and shout

Experience a tornado

Very rare
4.00%last reported global rate
99
Here's A Tram

Have one tram line active

Very rare
4.10%last reported global rate
100
Shake It Up!

Experience an earthquake

Very rare
4.10%last reported global rate