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 · Wednesday

Challenge of October 7, 2026

Photos: Skull Index, Wikipedia

ClassicHarder than 63% of days

Alligator Snapping Turtles

Macrochelys temminckii

Reptilia/Testudines/Chelydridae/Macrochelys/Macrochelys temminckii

Players: 36
Median time: 5 sec

Solved on try

156%
233%
30%
40%
×11%

Most confused with

Common snapping turtleChelydra serpentina12 of 36
Aldabra Giant TortoisesAldabrachelys gigantea3 of 36
African spurred tortoiseCentrochelys sulcata2 of 36

Photos: Skull Index, Wikipedia

TaxonomyHarder than 47% of days

Von der Decken's Hornbill

Tockus deckeni

Where the community fell · players: 36

ClassAves97%
OrderBucerotiformes72%
25% fell here · Most picked wrong answer: Ciconiiformes (3 of 35)
FamilyBucerotidae72%
GenusTockus69%
SpeciesTockus deckeni50%

50% reached the species

Skull MatchHarder than 56% of days

The skulls

Kuhl's pipistrellePipistrellus kuhlii
Pratt's Roundleaf BatHipposideros pratti
Big Brown BatEptesicus fuscus
Hammer-Headed BatHypsignathus monstrosus

Decoy namesPanamanian White-Faced Capuchin, Veldkamp's Dwarf Epauletted Fruit Bat

Players: 36
Matched them all: 61%
Mistakes on average: 2.7

Most common swap

Big Brown Bat taken for Veldkamp's Dwarf Epauletted Fruit Bat×16
Kuhl's pipistrelle taken for Veldkamp's Dwarf Epauletted Fruit Bat×15
Pratt's Roundleaf Bat taken for Veldkamp's Dwarf Epauletted Fruit Bat×10

Speed RunHarder than 83% of days

The race

Players: 36
Finished: 81%
Median time: 36 sec
Median score: 5,521
Best score: 7,424

Skulls reached

1081%
96%
83%
76%
63%
23%

The skulls of the race · players: 36

1. Crowned Guenon61% on the first try
2. North American Porcupine67% on the first try
3. Common bream57% on the first try
4. Eastern gray squirrel60% on the first try
5. Common Brown Lemur63% on the first try
6. Brown Bears60% on the first try
7. Coyotes62% on the first try
8. Grey Herons84% on the first try
9. Mantled guereza58% on the first try
10. Horsfield's Tree Shrews79% on the first try

Toughest skull: Mantled guereza · 42% fell here · median time 2.1 sec

Odd One OutHarder than 96% of days

The odd ones out

Players: 35
Won: 51%
Found on average: 2.7/5

Round 1 of 5 · Class
the three: Aves·intruder: Reptilia
- Common kestrelFalco tinnunculus
- Spotted Eagle OwlBubo africanus
- Chinese Softshell TurtlesPelodiscus sinensis
- Choco ToucanRamphastos brevis
94% on the first try · 6% on the second · 94% named the group
Round 2 of 5 · Order
the three: Accipitriformes·intruder: Psittaciformes
- Golden eagleAquila chrysaetos
- White-Tailed EaglesHaliaeetus albicilla
- Eastern RosellaPlatycercus eximius
- Common BuzzardsButeo buteo
34% on the first try · 23% on the second · 17% named the group
Round 3 of 5 · Family
the three: Canidae·intruder: Ursidae
- American Red FoxesVulpes vulpes fulva
- DingoDebated; Canis familiaris, Canis familiaris dingo, or Canis dingo
- Grey FoxUrocyon cinereoargenteus
- Polar BearsUrsus maritimus
34% on the first try · 37% on the second · 66% named the group
Round 4 of 5 · Genus
the three: Sus·intruder: Potamochoerus
- Domestic pigSus scrofa domesticus
- Red River HogPotamochoerus porcus
- Domestic Pig – FeralSus domesticus or Sus scrofa domesticus
- Visayan warty pigSus cebifrons
3% on the first try · 17% on the second · 11% named the group · 80% fell here
Round 5 of 5 · Species
the three: Ursus arctos·intruder: Ursus americanus
- American Black BearsUrsus americanus
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
9% on the first try · 11% on the second · 17% named the group

Play today’s challenge Past challenges

Challenge of October 7, 2026

Photos: Skull Index, Wikipedia

ClassicHarder than 63% of days

Alligator Snapping Turtles

Macrochelys temminckii

Reptilia/Testudines/Chelydridae/Macrochelys/Macrochelys temminckii

Players: 36
Median time: 5 sec

Solved on try

156%
233%
30%
40%
×11%

Most confused with

Common snapping turtleChelydra serpentina12 of 36
Aldabra Giant TortoisesAldabrachelys gigantea3 of 36
African spurred tortoiseCentrochelys sulcata2 of 36

Photos: Skull Index, Wikipedia

TaxonomyHarder than 47% of days

Von der Decken's Hornbill

Tockus deckeni

Where the community fell · players: 36

ClassAves97%
OrderBucerotiformes72%
25% fell here · Most picked wrong answer: Ciconiiformes (3 of 35)
FamilyBucerotidae72%
GenusTockus69%
SpeciesTockus deckeni50%

50% reached the species

Skull MatchHarder than 56% of days

The skulls

Kuhl's pipistrellePipistrellus kuhlii
Pratt's Roundleaf BatHipposideros pratti
Big Brown BatEptesicus fuscus
Hammer-Headed BatHypsignathus monstrosus

Decoy namesPanamanian White-Faced Capuchin, Veldkamp's Dwarf Epauletted Fruit Bat

Players: 36
Matched them all: 61%
Mistakes on average: 2.7

Most common swap

Big Brown Bat taken for Veldkamp's Dwarf Epauletted Fruit Bat×16
Kuhl's pipistrelle taken for Veldkamp's Dwarf Epauletted Fruit Bat×15
Pratt's Roundleaf Bat taken for Veldkamp's Dwarf Epauletted Fruit Bat×10

Speed RunHarder than 83% of days

The race

Players: 36
Finished: 81%
Median time: 36 sec
Median score: 5,521
Best score: 7,424

Skulls reached

1081%
96%
83%
76%
63%
23%

The skulls of the race · players: 36

1. Crowned Guenon61% on the first try
2. North American Porcupine67% on the first try
3. Common bream57% on the first try
4. Eastern gray squirrel60% on the first try
5. Common Brown Lemur63% on the first try
6. Brown Bears60% on the first try
7. Coyotes62% on the first try
8. Grey Herons84% on the first try
9. Mantled guereza58% on the first try
10. Horsfield's Tree Shrews79% on the first try

Toughest skull: Mantled guereza · 42% fell here · median time 2.1 sec

Odd One OutHarder than 96% of days

The odd ones out

Players: 35
Won: 51%
Found on average: 2.7/5

Round 1 of 5 · Class
the three: Aves·intruder: Reptilia
- Common kestrelFalco tinnunculus
- Spotted Eagle OwlBubo africanus
- Chinese Softshell TurtlesPelodiscus sinensis
- Choco ToucanRamphastos brevis
94% on the first try · 6% on the second · 94% named the group
Round 2 of 5 · Order
the three: Accipitriformes·intruder: Psittaciformes
- Golden eagleAquila chrysaetos
- White-Tailed EaglesHaliaeetus albicilla
- Eastern RosellaPlatycercus eximius
- Common BuzzardsButeo buteo
34% on the first try · 23% on the second · 17% named the group
Round 3 of 5 · Family
the three: Canidae·intruder: Ursidae
- American Red FoxesVulpes vulpes fulva
- DingoDebated; Canis familiaris, Canis familiaris dingo, or Canis dingo
- Grey FoxUrocyon cinereoargenteus
- Polar BearsUrsus maritimus
34% on the first try · 37% on the second · 66% named the group
Round 4 of 5 · Genus
the three: Sus·intruder: Potamochoerus
- Domestic pigSus scrofa domesticus
- Red River HogPotamochoerus porcus
- Domestic Pig – FeralSus domesticus or Sus scrofa domesticus
- Visayan warty pigSus cebifrons
3% on the first try · 17% on the second · 11% named the group · 80% fell here
Round 5 of 5 · Species
the three: Ursus arctos·intruder: Ursus americanus
- American Black BearsUrsus americanus
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
- Brown BearsUrsus arctos
9% on the first try · 11% on the second · 17% named the group

Challenge of October 7, 2026

Alligator Snapping Turtles

Von der Decken's Hornbill

The skulls

The race

The odd ones out

Challenge of 28 de setembro

Lobo-guará

Lobo-guará

Challenge of October 7, 2026

Alligator Snapping Turtles

Von der Decken's Hornbill

The skulls

The race

The odd ones out