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How you're doing so far

Rationality
100%
Budget
$500/500

Play it, don't read it

Your brain is getting played right now.

Every app you open is pushing you to spend. NudgEm does it on purpose so you can catch it. Play the sims and watch your Rationality and Budget move with every choice.

VerdictImpossible to Trick
See if you get tricked
Rationality

100%

Impossible to Trick

Cash left

$500

of $500

Traps dodged

0

good calls

Wasted on impulse

$0

0 impulses

Daily Brain Teaser+4% / −6%

Booking a flight and the site says "Only 1 seat left at this price!" Locking it in costs $50 more. Move?

Your path

From easily nudged to nudge-immune

Ten labs. Each one teaches one trap and hands you a badge when you beat it. Go top to bottom.

0/10
labs
Current rank
Easily Nudged
Do this nextBeat the fake countdown: Skip the sneakers with a trap still running.Start it
  1. 01

    Beat the fake countdown

    Up next

    The checkout says "1 left, 2:00 to buy." None of it is real.

    Artificial ScarcityOpen lab
  2. 02

    Walk away from the auction

    Locked

    Bid on a $20 bill. The loser still pays. The only win is not playing.

    Sunk Cost FallacyOpen lab
  3. 03

    Kill the auto-renew

    Locked

    The box is pre-checked because they know you won’t uncheck it.

    Default BiasOpen lab
  4. 04

    See past the wording

    Locked

    "Keep $200" and "Lose $400" are the same money, one just hurts more.

    Framing & Loss AversionOpen lab
  5. 05

    Redesign the lunch line

    Locked

    Use the tricks for good. Change what kids eat without banning anything.

    Choice ArchitectureOpen lab
  6. 06

    Nudge a whole country

    Locked

    Auto sign-up for pensions, opt-out organ donors, across millions of people.

    Public Policy NudgesOpen lab
  7. 07

    Map your own weak spots

    Locked

    Ten questions. Find out which traps get you every time.

    Self-KnowledgeOpen lab
  8. 08

    Engineer a habit

    Locked

    Add one speed bump and watch a bad habit fall apart.

    Friction & Habit LoopsOpen lab
  9. 09

    Fast-forward your future

    Locked

    See what today-you costs future-you, in real dollars.

    Hyperbolic DiscountingOpen lab
  10. 10

    Scan a live checkout

    Locked

    Last one. Spot every trick on a page at a glance.

    Pattern RecognitionOpen lab

The Receipts

live

Nothing on you yet

Play a sim. Every move shows up here with the trick that got you.

Worth knowing

Three biases to know

Quick cards on how each trick works and how to dodge it. Tap one to go deeper.

Loss Aversion

Losing $20 ruins your week. Finding $20 is just "neat."

Losing something feels about twice as bad as gaining the same thing feels good. So you fight harder to keep stuff than to get it.

Choice Overload

Too many options and you pick nothing, or the worst one.

Give someone 500 options and they freeze. They give up or take whatever is labeled most popular, which is usually the one that pays best.

Hyperbolic Discounting

Now-you keeps robbing future-you.

You want stuff now and barely care about later. Future-you feels like a stranger.