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IdleOn - The Incremental MMO Achievements

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

Total achievements276
Rarest rate0.300%
Ultra rare16
Last checkedSep 17, 2026
Delayed official data

Rates and award counts were last observed on Sep 17, 2026.

121
What a View!

No public description is available.

Very rare
2.60%last reported global rate
122
Barley Lost

Fail a pet battle with the enemy team having only 5% HP or less. Wait, barely it's spelled HOW???

Very rare
2.70%last reported global rate
123
Blurple Skull

Get a Dementia Skull or higher on every mob within World 3 in the Deathnote feature. I probably don't have to specify "or higher" here lol

Very rare
2.70%last reported global rate
124
Boss Defeated

Defeat Glaciaxus on its 1st difficulty

Very rare
2.70%last reported global rate
125
Grand Captain

Level up a Sailing Captain to Lv 10. They shall sail the seas with confidence!

Very rare
2.70%last reported global rate
126
Jellyfish Jelly

Have a stack of exactly 6000 Jellyfish in your Storage Chest. I heard their Jelly goes good with burgers btw.

Very rare
2.70%last reported global rate
127
Le Pretzel Bleu

Have 8 kitchens all cooking Pretzels at the same time. Don't get it twisted, them pretzels are the real deal.

Very rare
2.70%last reported global rate
128
Tomb Defiler

Defeat Snakenhotep on his 2nd Difficulty.

Very rare
2.70%last reported global rate
129
Golden Obolden!

Have 15 Golden Obols equipped at once. The Family tab counts here!

Very rare
2.80%last reported global rate
130
All Hail Purrmep

Unlock the 7th Divinity God.

Very rare
2.90%last reported global rate
131
Bland Dish

No public description is available.

Very rare
2.90%last reported global rate
132
Buzz Buzz

Have a stack of exactly 2500 Flies in your Storage Chest.

Very rare
2.90%last reported global rate
133
Lucky Stealy

Successfully find 6 items in a row, in a single AFK claim within Sneaking.

Very rare
2.90%last reported global rate
134
Vial Junkee

Get 10 vials to Lv. 9, which are the hyperlight Orange ones. Stop focusing so much on vials, it's not healthy!

Very rare
2.90%last reported global rate
135
WOAH That's Fast

Have a speed of 'Too Fast' displayed while cooking an Eggplant. No this is not a metaphor.

Very rare
2.90%last reported global rate
136
Artifact Finder

Collect 15 Artifacts from Sailing

Very rare
3.00%last reported global rate
137
Best Plate

Upgrade a meal at the Dinner Menu to the point where it gets a void pearl plate!

Very rare
3.00%last reported global rate
138
Golden Fly

Pass through the small golden hoop in the Catching Minigame. It's worth 3 points!

Very rare
3.00%last reported global rate
139
Half a Mill-log

Have a stack of exactly 500,000 Veiny Logs in your Storage Chest.

Very rare
3.00%last reported global rate
140
Nutty Crafter

Craft 42 golden peanuts, whatever those might be!

Very rare
3.00%last reported global rate