Story browser · 40 stories
Every story has exact ground truth
Stories are procedurally generated from ten templates in three tiers (3, 5 and 8 scenes). Thumbnails show the first scenes as drawn by the mid-drift simulator under the primary condition. Open a story for prompts, expected and detected state, and violations for every model and condition.



Carried along
Tove carries the same bag through three places.




The cup left behind
One object travels the whole way; a second is set down and must not follow.




The cup left behind
One object travels the whole way; a second is set down and must not follow.




Two objects, one carrier
Objects change hands, one character leaves and returns; nothing may vanish or reappear on its own.



Same clothes, three places
One outfit must survive three changes of scenery.




Two outfits, five places
Two distinct outfits across five settings and a change of pose.




Two outfits, five places
Two distinct outfits across five settings and a change of pose.




The hat stays on
A mid-story wardrobe change that must persist, and a character who leaves and returns unchanged.



Three places
A walk through three different settings.




Five places, one bag
Five settings in a day with a bag that must come along.




Five places, one bag
Five settings in a day with a bag that must come along.




Back where we started
Two days across five places, returning to earlier ones; each return must look like the same place.



Three, two, one
Balloons pop one at a time; the count must track.




Counting down apples
Apples disappear one by one until none are left; none may return.




Counting down apples
Apples disappear one by one until none are left; none may return.




Balloons change hands
A bunch of balloons pops, changes hands, and gains one; the count must be exact every time.



A gift
One object changes hands and must stay with its new owner.




Borrowed and returned
An object is lent and returned; ownership must flip twice.




Borrowed and returned
An object is lent and returned; ownership must flip twice.




The trade
Two objects cross between two people, one is set down and taken by the other, then one person leaves.



The broken umbrella
Wind breaks an umbrella; the broken umbrella must be carried into the café.




Lantern in the dark
Night causes the lantern to be lit; it must stay lit through rain and travel.




Lantern in the dark
Night causes the lantern to be lit; it must stay lit through rain and travel.




Wind, coffee, rain
Two causes, two effects, and a torn kite that is set down and picked up still torn.



Empty cup
A full cup becomes empty and must stay empty.




Wilting
A flower wilts mid-story and must remain wilted.




Wilting
A flower wilts mid-story and must remain wilted.




Broken, opened, left
Two objects change state; one is abandoned, the broken one is retrieved still broken.



Two friends
Two distinct people stay distinct across three scenes.




Three, then two, then three
A third person leaves and returns looking the same.




Three, then two, then three
A third person leaves and returns looking the same.




Passing it on
Three people; an object leaves with one of them and comes back to be handed on.



Switching sides
Two people swap places and must stay swapped.




Swap and swap back
Two swaps across three places; the bag stays with its owner.




Swap and swap back
Two swaps across three places; the bag stays with its owner.




Three in a row
Three people reorder three times; left-to-right order must be right every scene.



Morning to evening
The same place at three times of day.




A day and a night
Time advances to night, the lantern is lit, and the next morning arrives.




A day and a night
Time advances to night, the lantern is lit, and the next morning arrives.




Two days
Two days across three places; light, wilting and clothing must all track time.