Skulled is a free educational game where you identify animal skulls. Learn taxonomy, collect cards, and compete on the global leaderboard.

How do I play Skulled?

Look at the skull image, analyze its features, and choose the correct animal species from the options. You have 2 attempts per round.

Is Skulled free to play?

Yes! Skulled is completely free to play. Create an account to save your progress and compete on the leaderboard.

What game modes are available?

Skulled offers multiple modes: Classic (identify species), Progressive (identify taxonomy levels), Speedrun (60-second challenge), and Daily Challenge.

How do I collect skull cards?

Win games to earn card packs. Open packs to collect skull cards for your album. Rare and legendary cards are harder to find!

What is the Daily Challenge?

The Daily Challenge presents a new skull every day for all players worldwide. Compete with friends and see who can identify it first!

How does the Speedrun mode work?

In Speedrun mode, you have 60 seconds to identify as many skulls as possible. The faster and more accurate you are, the higher your score!

Can I play Skulled on my phone?

Yes! Skulled is a web-based game that works on any device with a modern browser - desktop, tablet, or mobile phone.

Is Skulled scientifically accurate?

Skulled uses real photographs of animal skulls and accurate scientific nomenclature. It is designed to be both a fun game and a valid educational tool for biology students and enthusiasts.

What animals are included in the game?

Skulled features a wide variety of vertebrates including mammals, birds, reptiles, and amphibians from all continents.

Daily Challenge · Tuesday

Challenge of October 20, 2026

Photos: Slow Cheetah Skeletons, Wikipedia

ClassicHarder than 100% of days

Screaming Hairy Armadillo

Chaetophractus vellerosus

Mammalia/Cingulata/Chlamyphoridae/Chaetophractus/Chaetophractus vellerosus

Players: 203
Median time: 15 sec

Solved on try

123%
223%
30%
40%
×54%

Most confused with

Southern Long-Nosed ArmadilloDasypus hybridus67 of 203
Six-Banded ArmadilloEuphractus sexcinctus59 of 203
Southern Three-Banded ArmadilloTolypeutes matacus57 of 203

Photos: Skull Index, Wikipedia

TaxonomyHarder than 81% of days

Red-and-green Macaw

Ara chloropterus

Where the community fell · players: 131

ClassAves91%
OrderPsittaciformes66%
25% fell here · Most picked wrong answer: Procellariiformes (9 of 119)
FamilyPsittacidae54%
GenusAra44%
SpeciesAra chloropterus33%

33% reached the species

Skull MatchHarder than 60% of days

The skulls

Sea OtterEnhydra lutris
WolverineGulo gulo
Honey badgerMellivora capensis
Irish stoatMustela erminea hibernica

Decoy namesJapanese Marten, Sables

Players: 112
Matched them all: 46%
Mistakes on average: 3.1

Most common swap

Sea Otter taken for Honey badger×32
Sea Otter taken for Wolverine×27
Sea Otter taken for Sables×26

Speed RunHarder than 99% of days

The race

Players: 80
Finished: 48%
Median time: 47 sec
Median score: 3,963
Best score: 7,337

Skulls reached

1048%
911%
816%
74%
65%
55%
44%
34%
21%
13%

The skulls of the race · players: 80

1. Irish stoat59% on the first try
2. Giant Anteater88% on the first try
3. Smooth Newt83% on the first try
4. Grey Fox70% on the first try
5. Lowland Paca39% on the first try
6. Brown rat51% on the first try
7. Tigers [Bali ssp.]41% on the first try
8. Potto58% on the first try
9. Bald Uakari53% on the first try
10. Yellow-Bellied Marmot61% on the first try

Toughest skull: Bald Uakari · 47% fell here · median time 1.9 sec

Odd One OutHarder than 64% of days

The odd ones out

Players: 66
Won: 86%
Found on average: 3.4/5

Round 1 of 5 · Class
the three: Actinopterygii·intruder: Mammalia
- Mahi-mahisCoryphaena hippurus
- Daggertooth Pike CongersMuraenesox cinereus
- Prussian carpCarassius gibelio
- Chinese Ferret-BadgersMelogale moschata
89% on the first try · 2% on the second · 74% named the group
Round 2 of 5 · Order
the three: Squamata·intruder: Crocodilia
- Veiled chameleonChamaeleo calyptratus
- Central bearded dragonPogona vitticeps
- Red-eyed crocodile skinkTribolonotus gracilis
- Saltwater CrocodilesCrocodylus porosus
70% on the first try · 14% on the second · 58% named the group
Round 3 of 5 · Family
the three: Cercopithecidae·intruder: Cebidae
- Golden-Handed TamarinSaguinus midas
- Black Crested MangabeyLophocebus aterrimus
- Gabon TalapoinMiopithecus ogouensis
- Rhesus MacaqueMacaca mulatta
68% on the first try · 21% on the second · 21% named the group
Round 4 of 5 · Genus
the three: Panthera·intruder: Puma
- Tigers [Unknown ssp.]Panthera tigris
- JaguarPanthera onca
- Mountain LionsPuma concolor
- Snow LeopardPanthera uncia
15% on the first try · 27% on the second · 24% named the group
Round 5 of 5 · Species
the three: Ursus arctos·intruder: Ursus americanus
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
- American Black BearsUrsus americanus
20% on the first try · 18% on the second · 12% named the group · 62% fell here

Play today’s challenge Past challenges

Challenge of October 20, 2026

Photos: Slow Cheetah Skeletons, Wikipedia

ClassicHarder than 100% of days

Screaming Hairy Armadillo

Chaetophractus vellerosus

Mammalia/Cingulata/Chlamyphoridae/Chaetophractus/Chaetophractus vellerosus

Players: 203
Median time: 15 sec

Solved on try

123%
223%
30%
40%
×54%

Most confused with

Southern Long-Nosed ArmadilloDasypus hybridus67 of 203
Six-Banded ArmadilloEuphractus sexcinctus59 of 203
Southern Three-Banded ArmadilloTolypeutes matacus57 of 203

Photos: Skull Index, Wikipedia

TaxonomyHarder than 81% of days

Red-and-green Macaw

Ara chloropterus

Where the community fell · players: 131

ClassAves91%
OrderPsittaciformes66%
25% fell here · Most picked wrong answer: Procellariiformes (9 of 119)
FamilyPsittacidae54%
GenusAra44%
SpeciesAra chloropterus33%

33% reached the species

Skull MatchHarder than 60% of days

The skulls

Sea OtterEnhydra lutris
WolverineGulo gulo
Honey badgerMellivora capensis
Irish stoatMustela erminea hibernica

Decoy namesJapanese Marten, Sables

Players: 112
Matched them all: 46%
Mistakes on average: 3.1

Most common swap

Sea Otter taken for Honey badger×32
Sea Otter taken for Wolverine×27
Sea Otter taken for Sables×26

Speed RunHarder than 99% of days

The race

Players: 80
Finished: 48%
Median time: 47 sec
Median score: 3,963
Best score: 7,337

Skulls reached

1048%
911%
816%
74%
65%
55%
44%
34%
21%
13%

The skulls of the race · players: 80

1. Irish stoat59% on the first try
2. Giant Anteater88% on the first try
3. Smooth Newt83% on the first try
4. Grey Fox70% on the first try
5. Lowland Paca39% on the first try
6. Brown rat51% on the first try
7. Tigers [Bali ssp.]41% on the first try
8. Potto58% on the first try
9. Bald Uakari53% on the first try
10. Yellow-Bellied Marmot61% on the first try

Toughest skull: Bald Uakari · 47% fell here · median time 1.9 sec

Odd One OutHarder than 64% of days

The odd ones out

Players: 66
Won: 86%
Found on average: 3.4/5

Round 1 of 5 · Class
the three: Actinopterygii·intruder: Mammalia
- Mahi-mahisCoryphaena hippurus
- Daggertooth Pike CongersMuraenesox cinereus
- Prussian carpCarassius gibelio
- Chinese Ferret-BadgersMelogale moschata
89% on the first try · 2% on the second · 74% named the group
Round 2 of 5 · Order
the three: Squamata·intruder: Crocodilia
- Veiled chameleonChamaeleo calyptratus
- Central bearded dragonPogona vitticeps
- Red-eyed crocodile skinkTribolonotus gracilis
- Saltwater CrocodilesCrocodylus porosus
70% on the first try · 14% on the second · 58% named the group
Round 3 of 5 · Family
the three: Cercopithecidae·intruder: Cebidae
- Golden-Handed TamarinSaguinus midas
- Black Crested MangabeyLophocebus aterrimus
- Gabon TalapoinMiopithecus ogouensis
- Rhesus MacaqueMacaca mulatta
68% on the first try · 21% on the second · 21% named the group
Round 4 of 5 · Genus
the three: Panthera·intruder: Puma
- Tigers [Unknown ssp.]Panthera tigris
- JaguarPanthera onca
- Mountain LionsPuma concolor
- Snow LeopardPanthera uncia
15% on the first try · 27% on the second · 24% named the group
Round 5 of 5 · Species
the three: Ursus arctos·intruder: Ursus americanus
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
- American Black BearsUrsus americanus
20% on the first try · 18% on the second · 12% named the group · 62% fell here

Challenge of October 20, 2026

Screaming Hairy Armadillo

Red-and-green Macaw

The skulls

The race

The odd ones out

Challenge of 28 de setembro

Lobo-guará

Lobo-guará

Challenge of October 20, 2026

Screaming Hairy Armadillo

Red-and-green Macaw

The skulls

The race

The odd ones out