Steam

IdleOn - The Incremental MMO Achievements

Current global Steam unlock rates, ordered from rarest to most common.

Total achievements276

Rarest rate0.300%

Ultra rare16

Last checkedSep 17, 2026

Current official data

Rarity labels are derived from the exact global percentage shown on each row.

201

Card Dude

Collect 120 unique cards. This basically makes you like, THE guy who does the card stuff!

Very rare

4.60%of Steam players

202

Obols Oh Boy!

Have 10 Silver Obols equipped at once. The Family tab counts here!

Very rare

4.60%of Steam players

203

Pillars of Sand

Defeat 250,000 Sandy Pots combined across all characters. Forget the Pillars of Salt though.

Very rare

4.80%of Steam players

204

Vial Noob

Get 3 vials to Lv. 4, which are the green ones

Very rare

4.90%of Steam players

205

Meel Time!

No public description is available.

Rare

5.10%of Steam players

206

Meet the Dev

No public description is available.

Rare

5.10%of Steam players

207

Yawning Cogs

Have 4 unclaimed Yellow Cogs during any single moment in time, apart from March 16, 2026 at 3.07pm

Rare

5.10%of Steam players

208

Big Frog Big Sad

Defeat Grandfrogger on his 3rd Difficulty.

Rare

5.20%of Steam players

209

Dumbo the Destroyer

Defeat Efaunt on Chaotic Difficulty. Watch out for his new kick attack, and for all his old attacks since they're still deadly!

Rare

5.30%of Steam players

210

Mutant Massacrer

Defeat both mutant Minibosses: The Dilapidated Slush of World 3, and the Mutated Mush of World 4.

Rare

5.30%of Steam players

211

Based Roots

Reach The Roots, which is the map below the Sticks monsters in the Giant Tree

Rare

5.40%of Steam players

212

Big Mobs, eek!

Defeat 5 Giant Monsters. You'll learn about these at the Prayer Rock in the Frostbite Tundra town.

Rare

5.40%of Steam players

213

Sweet Victory

Get a Score of 200,000 or more in the Sandstone Colosseum

Rare

5.40%of Steam players

214

Right to Bear Iron

Equip an Iron Helmet, Iron Chestplate, Iron Pants, and one Iron Tool.

Rare

5.50%of Steam players

215

Coarse Cards

Level up cards for Mafioso, Sandcastle, Pincermin, and Mashed Potato, all up to 1 star.

Rare

5.70%of Steam players

216

Crystal S-S-S-Suuuper Slam

Defeat 100 Crystal Monsters! This could go a couple rounds...

Rare

5.80%of Steam players

217

Dungeon Pinch

Deal 100 or more damage in a single hit in any party dungeon.

Rare

5.90%of Steam players

218

Milky Wayfarer

Reach World 4, the purple world with all the space stuff and things!

Rare

6.10%of Steam players

219

Big Frog Furious

Defeat Grandfrogger on his 2nd Difficulty.

Rare

6.20%of Steam players

220

2 Minute Meal

Spawn Grandfrogger within 2 minutes of entering the dungeon.

Rare

6.30%of Steam players