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 · Friday

Challenge of October 9, 2026

Photos: Skull Index, Slow Cheetah Skeletons, Wikipedia

ClassicEasier than 71% of days

Eurasian Lynxes

Lynx lynx

Mammalia/Carnivora/Felidae/Lynx/Lynx lynx

Players: 32
Median time: 5 sec

Solved on try

156%
241%
30%
40%
×3%

Most confused with

BobcatLynx rufus6 of 32
Canada lynxLynx canadensis5 of 32
Carpathian lynxLynx lynx carpathicus2 of 32

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyEasier than 90% of days

Groundhog

Marmota monax

Where the community fell · players: 31

ClassMammalia100%
OrderRodentia100%
FamilySciuridae100%
GenusMarmota97%
SpeciesMarmota monax81%
16% fell here · Most picked wrong answer: Yellow-Bellied Marmot (10 of 30)

81% reached the species

Skull MatchHarder than 100% of days

The skulls

Greater Cane RatsThryonomys swinderianus
Mazama Pocket GopherThomomys mazama
GroundhogMarmota monax
Mountain BeaverAplodontia rufa

Decoy namesSyrian Hamster, Black Agouti

Players: 29
Matched them all: 17%
Mistakes on average: 4.2

Most common swap

Greater Cane Rats taken for Mountain Beaver×20
Greater Cane Rats taken for Black Agouti×14
Mountain Beaver taken for Syrian Hamster×11

Speed RunHarder than 54% of days

The race

Players: 28
Finished: 79%
Median time: 33 sec
Median score: 6,488
Best score: 7,784

Skulls reached

1079%
814%
67%

The skulls of the race · players: 28

1. Fishing Cat68% on the first try
2. Mandrill75% on the first try
3. Western jackdaw79% on the first try
4. Pallas Cats71% on the first try
5. Brown Bears68% on the first try
6. Coypu64% on the first try
7. South American Fur Seals92% on the first try
8. South American coati58% on the first try
9. Emerald tree boa86% on the first try
10. Ostrich100% on the first try

Toughest skull: South American coati · 42% fell here · median time 2.5 sec

Odd One OutHarder than 78% of days

The odd ones out

Players: 27
Won: 85%
Found on average: 3.4/5

Round 1 of 5 · Class
the three: Aves·intruder: Mammalia
- Eastern RosellaPlatycercus eximius
- Western Barn OwlTyto alba
- Northern GannetMorus bassanus
- Linnaeus's two-toed SlothsCholoepus didactylus
100% on the first try · 0% on the second · 100% named the group
Round 2 of 5 · Order
the three: Carnivora·intruder: Didelphimorphia
- Pampas foxLycalopex gymnocercus
- Bare-Tailed Woolly OpossumCaluromys philander
- Harp SealsPagophilus groenlandicus
- African Palm CivetsNandinia binotata
37% on the first try · 48% on the second · 85% named the group
Round 3 of 5 · Family
the three: Corvidae·intruder: Fringillidae
- European goldfinchCarduelis carduelis
- Red-Billed ChoughPyrrhocorax pyrrhocorax
- Blue JayCyanocitta cristata
- Inca JaysCyanocorax yncas
33% on the first try · 52% on the second · 70% named the group
Round 4 of 5 · Genus
the three: Sus·intruder: Babyrousa
- European Wild BoarsSus scrofa
- Domestic Pig – FeralSus domesticus or Sus scrofa domesticus
- Visayan warty pigSus cebifrons
- Buru babirusaBabyrousa babyrussa
44% on the first try · 19% on the second · 37% named the group
Round 5 of 5 · Species
the three: Panthera pardus·intruder: Panthera onca
- JaguarPanthera onca
- LeopardPanthera pardus
- LeopardPanthera pardus
- Indian LeopardsPanthera pardus fusca
4% on the first try · 7% on the second · 4% named the group · 89% fell here

Play today’s challenge Past challenges

Challenge of October 9, 2026

Photos: Skull Index, Slow Cheetah Skeletons, Wikipedia

ClassicEasier than 71% of days

Eurasian Lynxes

Lynx lynx

Mammalia/Carnivora/Felidae/Lynx/Lynx lynx

Players: 32
Median time: 5 sec

Solved on try

156%
241%
30%
40%
×3%

Most confused with

BobcatLynx rufus6 of 32
Canada lynxLynx canadensis5 of 32
Carpathian lynxLynx lynx carpathicus2 of 32

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyEasier than 90% of days

Groundhog

Marmota monax

Where the community fell · players: 31

ClassMammalia100%
OrderRodentia100%
FamilySciuridae100%
GenusMarmota97%
SpeciesMarmota monax81%
16% fell here · Most picked wrong answer: Yellow-Bellied Marmot (10 of 30)

81% reached the species

Skull MatchHarder than 100% of days

The skulls

Greater Cane RatsThryonomys swinderianus
Mazama Pocket GopherThomomys mazama
GroundhogMarmota monax
Mountain BeaverAplodontia rufa

Decoy namesSyrian Hamster, Black Agouti

Players: 29
Matched them all: 17%
Mistakes on average: 4.2

Most common swap

Greater Cane Rats taken for Mountain Beaver×20
Greater Cane Rats taken for Black Agouti×14
Mountain Beaver taken for Syrian Hamster×11

Speed RunHarder than 54% of days

The race

Players: 28
Finished: 79%
Median time: 33 sec
Median score: 6,488
Best score: 7,784

Skulls reached

1079%
814%
67%

The skulls of the race · players: 28

1. Fishing Cat68% on the first try
2. Mandrill75% on the first try
3. Western jackdaw79% on the first try
4. Pallas Cats71% on the first try
5. Brown Bears68% on the first try
6. Coypu64% on the first try
7. South American Fur Seals92% on the first try
8. South American coati58% on the first try
9. Emerald tree boa86% on the first try
10. Ostrich100% on the first try

Toughest skull: South American coati · 42% fell here · median time 2.5 sec

Odd One OutHarder than 78% of days

The odd ones out

Players: 27
Won: 85%
Found on average: 3.4/5

Round 1 of 5 · Class
the three: Aves·intruder: Mammalia
- Eastern RosellaPlatycercus eximius
- Western Barn OwlTyto alba
- Northern GannetMorus bassanus
- Linnaeus's two-toed SlothsCholoepus didactylus
100% on the first try · 0% on the second · 100% named the group
Round 2 of 5 · Order
the three: Carnivora·intruder: Didelphimorphia
- Pampas foxLycalopex gymnocercus
- Bare-Tailed Woolly OpossumCaluromys philander
- Harp SealsPagophilus groenlandicus
- African Palm CivetsNandinia binotata
37% on the first try · 48% on the second · 85% named the group
Round 3 of 5 · Family
the three: Corvidae·intruder: Fringillidae
- European goldfinchCarduelis carduelis
- Red-Billed ChoughPyrrhocorax pyrrhocorax
- Blue JayCyanocitta cristata
- Inca JaysCyanocorax yncas
33% on the first try · 52% on the second · 70% named the group
Round 4 of 5 · Genus
the three: Sus·intruder: Babyrousa
- European Wild BoarsSus scrofa
- Domestic Pig – FeralSus domesticus or Sus scrofa domesticus
- Visayan warty pigSus cebifrons
- Buru babirusaBabyrousa babyrussa
44% on the first try · 19% on the second · 37% named the group
Round 5 of 5 · Species
the three: Panthera pardus·intruder: Panthera onca
- JaguarPanthera onca
- LeopardPanthera pardus
- LeopardPanthera pardus
- Indian LeopardsPanthera pardus fusca
4% on the first try · 7% on the second · 4% named the group · 89% fell here

Challenge of October 9, 2026

Eurasian Lynxes

Groundhog

The skulls

The race

The odd ones out

Challenge of 28 de setembro

Lobo-guará

Lobo-guará

Challenge of October 9, 2026

Eurasian Lynxes

Groundhog

The skulls

The race

The odd ones out