START
HOW TO PLAY
Something suspicious has happened aboard Starship Mathion — the ship’s resource tracker is glitching! Four crewmates each reported what operation should be used to solve their situation… but one of them is the Impostor. Your mission is to: - Analyze each crewmate’s alibi.
- Decide who the impostor is — the one whose math doesn't "add up."
- Justify your accusation with a Claim, Evidence, and Reasoning.
Next
HOST
Cyan: I was tracking fuel levels. The gas tank had 45.6 liters, and we poured 12.4 liters in. I used subtraction because we poured it out of the gas cans.
Pink: I monitored oxygen use. The tank started with 78.5 units, and the crew used 23.2 units. I used subtraction because it was been taken away.
Orange: I checked cargo weight. We had 15.75 kg, then loaded 4.25 kg more. I used addition to find the total weight of both, together.
Yellow: I recorded water supply. There were 62.3 liters, and 10.1 liters were used. I used addition because I needed to find out how much remains.
Cyan: I was tracking fuel levels. The gas tank had 45.6 liters, and we poured 12.4 liters in. I used subtraction because we poured it out of the gas cans.
Pink: I monitored oxygen use. The tank started with 78.5 units, and the crew used 23.2 units. I used subtraction because it was been taken away.
Orange: I checked cargo weight. We had 15.75 kg, then loaded 4.25 kg more. I used addition to find the total weight of both, together.
Press the emergency button to eject the Impostor
Yellow: I recorded water supply. There were 62.3 liters, and 10.1 liters were used. I used addition because I needed to find out how much remains.
1. Claim
___ is sus.
2. Evidence
They're sus because they said ___.
3. Reasoning
That doesn't make sense because___.
Vote
Click on the sus Crewmate. Click the check to vote.
10 second time penalty
Return
password hint 1 of 2: four tenths +
Back
Return
10 second time penalty
Return
10 second time penalty
Return
password hint #1: four tenths +
Return
10 second time penalty
Return
password hint #2: eight tenths = _______
Return
What is the secret sum?
(numbers in standard form, not words)
How to Play
Find the imposter by checking their math. Whoever doesn't make sense is sus!
Harmony's among us
Nina Quasarano
Created on March 26, 2026
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Transcript
START
HOW TO PLAY
Something suspicious has happened aboard Starship Mathion — the ship’s resource tracker is glitching! Four crewmates each reported what operation should be used to solve their situation… but one of them is the Impostor. Your mission is to:- Analyze each crewmate’s alibi.
- Decide who the impostor is — the one whose math doesn't "add up."
- Justify your accusation with a Claim, Evidence, and Reasoning.
Next
HOST
Cyan: I was tracking fuel levels. The gas tank had 45.6 liters, and we poured 12.4 liters in. I used subtraction because we poured it out of the gas cans.
Pink: I monitored oxygen use. The tank started with 78.5 units, and the crew used 23.2 units. I used subtraction because it was been taken away.
Orange: I checked cargo weight. We had 15.75 kg, then loaded 4.25 kg more. I used addition to find the total weight of both, together.
Yellow: I recorded water supply. There were 62.3 liters, and 10.1 liters were used. I used addition because I needed to find out how much remains.
Cyan: I was tracking fuel levels. The gas tank had 45.6 liters, and we poured 12.4 liters in. I used subtraction because we poured it out of the gas cans.
Pink: I monitored oxygen use. The tank started with 78.5 units, and the crew used 23.2 units. I used subtraction because it was been taken away.
Orange: I checked cargo weight. We had 15.75 kg, then loaded 4.25 kg more. I used addition to find the total weight of both, together.
Press the emergency button to eject the Impostor
Yellow: I recorded water supply. There were 62.3 liters, and 10.1 liters were used. I used addition because I needed to find out how much remains.
1. Claim
___ is sus.
2. Evidence
They're sus because they said ___.
3. Reasoning
That doesn't make sense because___.
Vote
Click on the sus Crewmate. Click the check to vote.
10 second time penalty
Return
password hint 1 of 2: four tenths +
Back
Return
10 second time penalty
Return
10 second time penalty
Return
password hint #1: four tenths +
Return
10 second time penalty
Return
password hint #2: eight tenths = _______
Return
What is the secret sum?
(numbers in standard form, not words)
How to Play
Find the imposter by checking their math. Whoever doesn't make sense is sus!