Welcome to Acadru

Pick Your Path.
Start Anywhere.

Challenges, quests, missions—your
learning journey, your choice.

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Pop Challenges

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10 min

50 XP

The Weird Economics of $100,000 Watches

Why higher prices make some things irresistible?

10 mins

50 XP

The Weird Economics of $100,000 Watches

Why higher prices make some things irresistible?

10 min

50 XP

Order Without a Leader

Thousands of ants, one collective mind.

10 mins

50 XP

Order Without a Leader

Thousands of ants, one collective mind.

Brains Are Optional. Problem-Solving Is Universal

15 min

75 XP

Brains Are Optional. Problem-Solving Is Universal

Brainless Slime Mould Beats Humans

15 mins

75 XP

Brains Are Optional. Problem-Solving Is Universal

Brainless Slime Mould Beats Humans

10 min

50 XP

Without Coffee, We’d All Be Drunk?

How one drink sobered up history and fueled the modern world.

10 mins

50 XP

Without Coffee, We’d All Be Drunk?

How one drink sobered up history and fueled the modern world.

15 min

75 XP

How Banks Create Money from Nothin’

Money multiplies—even when no one prints it.

15 mins

75 XP

How Banks Create Money from Nothin’

Money multiplies—even when no one prints it.

10 min

50 XP

The Jabulani Ball Bent Physics

How aerodynamics turned the Jabulani infamous.

10 mins

50 XP

The Jabulani Ball Bent Physics

How aerodynamics turned the Jabulani infamous.

15 min

75 XP

Coal Was Retiring, Tech Revived It

Can clean energy really keep up with our clicks?

15 mins

75 XP

Coal Was Retiring, Tech Revived It

Can clean energy really keep up with our clicks?

15 min

75 XP

Is Real Friendship Dead?

Your brain wants friends, not followers.

15 mins

75 XP

Is Real Friendship Dead?

Your brain wants friends, not followers.

15 min

75 XP

Weaponizing Water: Rivers at Gunpoint

The world’s next wars may not be over oil, but over rivers.

15 mins

75 XP

Weaponizing Water: Rivers at Gunpoint

The world’s next wars may not be over oil, but over rivers.

10 min

50 XP

The Mackerel Economy

No Money? No Problem. A Fish Became Prison Currency

10 mins

50 XP

The Mackerel Economy

No Money? No Problem. A Fish Became Prison Currency

15 min

75 XP

One AI Query = Half a Liter of Water?

Billions of prompts, billions of gulps.

15 mins

75 XP

One AI Query = Half a Liter of Water?

Billions of prompts, billions of gulps.

10 min

50 XP

Why the Hoover Dam Doesn’t Crack!

The 80-year-old giant that still holds back the Colorado.

10 mins

50 XP

Why the Hoover Dam Doesn’t Crack!

The 80-year-old giant that still holds back the Colorado.

15 min

75 XP

How Engineers Broke Rivers

Concrete and dams promised safety — but delivered disasters.

15 mins

75 XP

How Engineers Broke Rivers

Concrete and dams promised safety — but delivered disasters.

10 min

50 XP

What Keeps Skyscrapers Up

Gravity pulls. Wind pushes. Engineers fight back.

10 mins

50 XP

What Keeps Skyscrapers Up

Gravity pulls. Wind pushes. Engineers fight back.

15 min

75 XP

Eradicate Killer Cats?

The Feral Cat Dilemma in Hawaii

15 mins

75 XP

Eradicate Killer Cats?

The Feral Cat Dilemma in Hawaii

15 min

75 XP

AI 2027 – Saved by AI, Replaced by AI

A step-by-step forecast of how AI takes over!

15 mins

75 XP

AI 2027 – Saved by AI, Replaced by AI

A step-by-step forecast of how AI takes over!

10 min

50 XP

More Than Data. It’s a Story.

When numbers meet visuals, they demand attention.

10 mins

50 XP

More Than Data. It’s a Story.

When numbers meet visuals, they demand attention.

15 min

75 XP

Worldbuilding Pokémon

What if your favorite game creatures had to obey biology?

15 mins

75 XP

Worldbuilding Pokémon

What if your favorite game creatures had to obey biology?

10 min

50 XP

Love Is Brainwork, Not Heartwork

The heart gets the credit, but the brain does the work.

10 mins

50 XP

Love Is Brainwork, Not Heartwork

The heart gets the credit, but the brain does the work.

15 min

50 XP

The Bikini Was Born in a Nuclear Test

When superpowers race, small nations pay the price.

15 mins

50 XP

The Bikini Was Born in a Nuclear Test

When superpowers race, small nations pay the price.

Mini Quests

View all

Rescue the Elements

Hack the Table: One Table. Infinite Possibilities

View Quest

30 mins

500 XP

Invent Your Own Currency

Could your idea be the next Bitcoin?

View Quest

60 mins

750 XP

Fix Concrete’s Dirty Secret

Concrete is cracking the climate—can nature fix it?

View Quest

60 mins

700 XP

Stop the Next Collapse

When buildings fall, lives and dreams shatter.

View Quest

30 mins

500 XP

Fix the Resource Curse

Rich in Resources. Poor in Policy?

View Quest

30 mins

500 XP

Eco-Fakes Uncovered

Learn to spot deceptive marketing and demand real sustainability!

View Quest

30 mins

500 XP

Invent the Next Economic Index

Decode the economy’s weirdest signals

View Quest

30 mins

500 XP

Resist the Crowd Trap

When everyone stays silent, evil wins.

View Quest

30 mins

500 XP

Turbulence, Illustrated

What equations can’t solve… your art might reveal.

View Quest

30 mins

500 XP

Can You Prove Genocide?

Genocide is a legal word, not just a tragedy.

View Quest

30 mins

500 XP

Fix Turbulence with Nature

Can animal secrets help us beat chaotic wind?

View Quest

30 mins

500 XP

Fighting the Rising Seas

Spot the risks, and help rebuild our coastal cities!

View Quest

30 mins

500 XP

Hunt the Hidden Primes

Think primes are predictable? Hunt. Be Surprised.

View Quest

30 mins

500 XP

Outsmart the Time Thieves

Rescue your mind from infinite distraction.

View Quest

30 mins

500 XP

Space Weather Watchers

Can You Decode the Sun’s Secrets Before They Disrupt Earth?

View Quest

30 mins

500 XP

Pop Challenges

View all

10 min

50 XP

The Weird Economics of $100,000 Watches

Why higher prices make some things irresistible?

10 mins

50 XP

The Weird Economics of $100,000 Watches

Why higher prices make some things irresistible?

10 min

50 XP

Order Without a Leader

Thousands of ants, one collective mind.

10 mins

50 XP

Order Without a Leader

Thousands of ants, one collective mind.

15 min

75 XP

Brains Are Optional. Problem-Solving Is Universal

Brainless Slime Mould Beats Humans

15 mins

75 XP

Brains Are Optional. Problem-Solving Is Universal

Brainless Slime Mould Beats Humans

10 min

50 XP

Without Coffee, We’d All Be Drunk?

How one drink sobered up history and fueled the modern world.

10 mins

50 XP

Without Coffee, We’d All Be Drunk?

How one drink sobered up history and fueled the modern world.

15 min

75 XP

How Banks Create Money from Nothin’

Money multiplies—even when no one prints it.

15 mins

75 XP

How Banks Create Money from Nothin’

Money multiplies—even when no one prints it.

10 min

50 XP

The Jabulani Ball Bent Physics

How aerodynamics turned the Jabulani infamous.

10 mins

50 XP

The Jabulani Ball Bent Physics

How aerodynamics turned the Jabulani infamous.

15 min

75 XP

Coal Was Retiring, Tech Revived It

Can clean energy really keep up with our clicks?

15 mins

75 XP

Coal Was Retiring, Tech Revived It

Can clean energy really keep up with our clicks?

15 min

75 XP

Is Real Friendship Dead?

Your brain wants friends, not followers.

15 mins

75 XP

Is Real Friendship Dead?

Your brain wants friends, not followers.

15 min

75 XP

Weaponizing Water: Rivers at Gunpoint

The world’s next wars may not be over oil, but over rivers.

15 mins

75 XP

Weaponizing Water: Rivers at Gunpoint

The world’s next wars may not be over oil, but over rivers.

10 min

50 XP

The Mackerel Economy

No Money? No Problem. A Fish Became Prison Currency

10 mins

50 XP

The Mackerel Economy

No Money? No Problem. A Fish Became Prison Currency

15 min

75 XP

One AI Query = Half a Liter of Water?

Billions of prompts, billions of gulps.

15 mins

75 XP

One AI Query = Half a Liter of Water?

Billions of prompts, billions of gulps.

10 min

50 XP

Why the Hoover Dam Doesn’t Crack!

The 80-year-old giant that still holds back the Colorado.

10 mins

50 XP

Why the Hoover Dam Doesn’t Crack!

The 80-year-old giant that still holds back the Colorado.

15 min

75 XP

How Engineers Broke Rivers

Concrete and dams promised safety — but delivered disasters.

15 mins

75 XP

How Engineers Broke Rivers

Concrete and dams promised safety — but delivered disasters.

10 min

50 XP

What Keeps Skyscrapers Up

Gravity pulls. Wind pushes. Engineers fight back.

10 mins

50 XP

What Keeps Skyscrapers Up

Gravity pulls. Wind pushes. Engineers fight back.

15 min

75 XP

Eradicate Killer Cats?

The Feral Cat Dilemma in Hawaii

15 mins

75 XP

Eradicate Killer Cats?

The Feral Cat Dilemma in Hawaii

15 min

75 XP

AI 2027 – Saved by AI, Replaced by AI

A step-by-step forecast of how AI takes over!

15 mins

75 XP

AI 2027 – Saved by AI, Replaced by AI

A step-by-step forecast of how AI takes over!

10 min

50 XP

More Than Data. It’s a Story.

When numbers meet visuals, they demand attention.

10 mins

50 XP

More Than Data. It’s a Story.

When numbers meet visuals, they demand attention.

15 min

75 XP

Worldbuilding Pokémon

What if your favorite game creatures had to obey biology?

15 mins

75 XP

Worldbuilding Pokémon

What if your favorite game creatures had to obey biology?

10 min

50 XP

Love Is Brainwork, Not Heartwork

The heart gets the credit, but the brain does the work.

10 mins

50 XP

Love Is Brainwork, Not Heartwork

The heart gets the credit, but the brain does the work.

15 min

50 XP

The Bikini Was Born in a Nuclear Test

When superpowers race, small nations pay the price.

15 mins

50 XP

The Bikini Was Born in a Nuclear Test

When superpowers race, small nations pay the price.

Mini Quests

View all

Rescue the Elements

Hack the Table: One Table. Infinite Possibilities

View Quest

30 mins

500 XP

Invent Your Own Currency

Could your idea be the next Bitcoin?

View Quest

60 mins

750 XP

Fix Concrete’s Dirty Secret

Concrete is cracking the climate—can nature fix it?

View Quest

60 mins

700 XP

Stop the Next Collapse

When buildings fall, lives and dreams shatter.

View Quest

30 mins

500 XP

Fix the Resource Curse

Rich in Resources. Poor in Policy?

View Quest

30 mins

500 XP

Eco-Fakes Uncovered

Learn to spot deceptive marketing and demand real sustainability!

View Quest

30 mins

500 XP

Invent the Next Economic Index

Decode the economy’s weirdest signals

View Quest

30 mins

500 XP

Resist the Crowd Trap

When everyone stays silent, evil wins.

View Quest

30 mins

500 XP

Turbulence, Illustrated

What equations can’t solve… your art might reveal.

View Quest

30 mins

500 XP

Can You Prove Genocide?

Genocide is a legal word, not just a tragedy.

View Quest

30 mins

500 XP

Fix Turbulence with Nature

Can animal secrets help us beat chaotic wind?

View Quest

30 mins

500 XP

Fighting the Rising Seas

Spot the risks, and help rebuild our coastal cities!

View Quest

30 mins

500 XP

Hunt the Hidden Primes

Think primes are predictable? Hunt. Be Surprised.

View Quest

30 mins

500 XP

Outsmart the Time Thieves

Rescue your mind from infinite distraction.

View Quest

30 mins

500 XP

Space Weather Watchers

Can You Decode the Sun’s Secrets Before They Disrupt Earth?

View Quest

30 mins

500 XP

Pick Your Path. Start Anywhere.

Rescue the Elements

Invent Your Own Currency

Fix Concrete’s Dirty Secret

Stop the Next Collapse

Fix the Resource Curse

Eco-Fakes Uncovered

Invent the Next Economic Index

Resist the Crowd Trap

Turbulence, Illustrated

Can You Prove Genocide?

Fix Turbulence with Nature

Fighting the Rising Seas

Hunt the Hidden Primes

Outsmart the Time Thieves

Space Weather Watchers

Rescue the Elements

Invent Your Own Currency

Fix Concrete’s Dirty Secret

Stop the Next Collapse

Fix the Resource Curse

Eco-Fakes Uncovered

Invent the Next Economic Index

Resist the Crowd Trap

Turbulence, Illustrated

Can You Prove Genocide?

Fix Turbulence with Nature

Fighting the Rising Seas

Hunt the Hidden Primes

Outsmart the Time Thieves

Space Weather Watchers

Pick Your Path.
Start Anywhere.