Vote on the memory. Then map the signal.

Compare what you remember against the current record, then see how your answers line up with other memory signals around the world.

1Start the surveyBegin with the original Mandela effect.
2Compare each memoryChoose the version that feels familiar.
3See your signalYour answer pattern becomes a timeline readout.
4Map the patternAdd a region anonymously or save your observer file.
Intro Alignment
Skip for now

Loading alignment…

Pulling questions from the live API.

Not ready yet? Explore the map and come back when you are ready.

Initializing

Syncing intro alignment

Loading the current prompt set and preparing the comparison stage.

Popular effects

Browse popular memories, vote on individual effects, and review the evidence behind each case.

View full archive
Pikachu Tail
CHARACTER
ME-005
Pikachu Tail
Shared
92%
Accepted
8%
Unknown
0%
Reports
13
Split
8% split
C-3PO All Gold
FILM
ME-034
C-3PO All Gold
Shared
88%
Accepted
13%
Unknown
0%
Reports
8
Split
13% split
Berenstain Bears
SPELLING
ME-001
Berenstain Bears
Shared
86%
Accepted
0%
Unknown
14%
Reports
7
Split
0% split
4
ACCOUNTS
0
ACTIVE NOW
26
RESPONSES
5
TIMELINES
58
ACTIVE EFFECTS
1
COUNTRIES MAPPED