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 · Sunday

Challenge of October 25, 2026

Photos: Slow Cheetah Skeletons, Wikipedia

ClassicHarder than 98% of days

Domestic Water Buffalo – River Buffalo

Bubalus bubalis

Mammalia/Cetartiodactyla/Bovidae/Bubalus/Bubalus bubalis

Players: 54
Median time: 10 sec

Solved on try

143%
230%
30%
40%
×28%

Most confused with

Alpine IbexCapra ibex6 of 54
Blue WildebeestConnochaetes taurinus5 of 54
OkapiOkapia johnstoni3 of 54

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyEasier than 63% of days

Yellow-Bellied Marmot

Marmota flaviventris

Where the community fell · players: 50

ClassMammalia100%
OrderRodentia100%
FamilySciuridae82%
18% fell here · Most picked wrong answer: Accipitridae (2 of 50)
GenusMarmota74%
SpeciesMarmota flaviventris58%

58% reached the species

Skull MatchHarder than 86% of days

The skulls

Domestic DogCanis familiaris or Canis lupus familiaris
Black-backed jackalCanis mesomelas
Side-Striped JackalLupulella adusta
DingoDebated; Canis familiaris, Canis familiaris dingo, or Canis dingo

Decoy namesKit Fox, Coyotes

Players: 47
Matched them all: 30%
Mistakes on average: 3.7

Most common swap

Black-backed jackal taken for Coyotes×32
Dingo taken for Coyotes×24
Side-Striped Jackal taken for Coyotes×15

Speed RunHarder than 88% of days

The race

Players: 44
Finished: 75%
Median time: 35 sec
Median score: 5,090
Best score: 7,458

Skulls reached

1075%
99%
82%
72%
65%
37%

The skulls of the race · players: 44

1. Crowned Guenon64% on the first try
2. North American Porcupine66% on the first try
3. Common bream50% on the first try
4. Eastern gray squirrel73% on the first try
5. Common Brown Lemur49% on the first try
6. Brown Bears73% on the first try
7. Coyotes62% on the first try
8. Grey Herons95% on the first try
9. Mantled guereza57% on the first try
10. Horsfield's Tree Shrews85% on the first try

Toughest skull: Mantled guereza · 43% fell here · median time 2.4 sec

Odd One OutHarder than 100% of days

The odd ones out

Players: 40
Won: 60%
Found on average: 2.7/5

Round 1 of 5 · Class
the three: Reptilia·intruder: Amphibia
- Arrau TurtlesPodocnemis expansa
- Quince MonitorsVaranus melinus
- European Common FrogsRana temporaria
- American AlligatorAlligator mississippiensis
55% on the first try · 18% on the second · 70% named the group
Round 2 of 5 · Order
the three: Rodentia·intruder: Primates
- GrivetChlorocebus aethiops
- Merriam’S Kangaroo RatDipodomys ordii
- Eurasian BeaversCastor fiber
- Brazilian PorcupineCoendou prehensilis
100% on the first try · 0% on the second · 95% named the group
Round 3 of 5 · Family
the three: Pitheciidae·intruder: Cercopithecidae
- Lucifer TitiCheracebus lucifer
- Black Bearded SakiChiropotes satanas
- Crowned GuenonCercopithecus pogonias
- Monk SakiPithecia monachus
0% on the first try · 8% on the second · 3% named the group · 93% fell here
Round 4 of 5 · Genus
the three: Papio·intruder: Macaca
- Celebes Crested MacaqueMacaca nigra
- Olive BaboonPapio anubis
- Kinda BaboonPapio kindae
- Yellow BaboonPapio cynocephalus
0% on the first try · 25% on the second · 5% named the group
Round 5 of 5 · Species
the three: Vulpes vulpes·intruder: Vulpes lagopus
- Arabian Red FoxesVulpes vulpes arabica
- European Red FoxesVulpes vulpes
- Arctic FoxesVulpes lagopus
- European Red FoxesVulpes vulpes
15% on the first try · 50% on the second · 18% named the group

Play today’s challenge Past challenges

Challenge of October 25, 2026

Photos: Slow Cheetah Skeletons, Wikipedia

ClassicHarder than 98% of days

Domestic Water Buffalo – River Buffalo

Bubalus bubalis

Mammalia/Cetartiodactyla/Bovidae/Bubalus/Bubalus bubalis

Players: 54
Median time: 10 sec

Solved on try

143%
230%
30%
40%
×28%

Most confused with

Alpine IbexCapra ibex6 of 54
Blue WildebeestConnochaetes taurinus5 of 54
OkapiOkapia johnstoni3 of 54

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyEasier than 63% of days

Yellow-Bellied Marmot

Marmota flaviventris

Where the community fell · players: 50

ClassMammalia100%
OrderRodentia100%
FamilySciuridae82%
18% fell here · Most picked wrong answer: Accipitridae (2 of 50)
GenusMarmota74%
SpeciesMarmota flaviventris58%

58% reached the species

Skull MatchHarder than 86% of days

The skulls

Domestic DogCanis familiaris or Canis lupus familiaris
Black-backed jackalCanis mesomelas
Side-Striped JackalLupulella adusta
DingoDebated; Canis familiaris, Canis familiaris dingo, or Canis dingo

Decoy namesKit Fox, Coyotes

Players: 47
Matched them all: 30%
Mistakes on average: 3.7

Most common swap

Black-backed jackal taken for Coyotes×32
Dingo taken for Coyotes×24
Side-Striped Jackal taken for Coyotes×15

Speed RunHarder than 88% of days

The race

Players: 44
Finished: 75%
Median time: 35 sec
Median score: 5,090
Best score: 7,458

Skulls reached

1075%
99%
82%
72%
65%
37%

The skulls of the race · players: 44

1. Crowned Guenon64% on the first try
2. North American Porcupine66% on the first try
3. Common bream50% on the first try
4. Eastern gray squirrel73% on the first try
5. Common Brown Lemur49% on the first try
6. Brown Bears73% on the first try
7. Coyotes62% on the first try
8. Grey Herons95% on the first try
9. Mantled guereza57% on the first try
10. Horsfield's Tree Shrews85% on the first try

Toughest skull: Mantled guereza · 43% fell here · median time 2.4 sec

Odd One OutHarder than 100% of days

The odd ones out

Players: 40
Won: 60%
Found on average: 2.7/5

Round 1 of 5 · Class
the three: Reptilia·intruder: Amphibia
- Arrau TurtlesPodocnemis expansa
- Quince MonitorsVaranus melinus
- European Common FrogsRana temporaria
- American AlligatorAlligator mississippiensis
55% on the first try · 18% on the second · 70% named the group
Round 2 of 5 · Order
the three: Rodentia·intruder: Primates
- GrivetChlorocebus aethiops
- Merriam’S Kangaroo RatDipodomys ordii
- Eurasian BeaversCastor fiber
- Brazilian PorcupineCoendou prehensilis
100% on the first try · 0% on the second · 95% named the group
Round 3 of 5 · Family
the three: Pitheciidae·intruder: Cercopithecidae
- Lucifer TitiCheracebus lucifer
- Black Bearded SakiChiropotes satanas
- Crowned GuenonCercopithecus pogonias
- Monk SakiPithecia monachus
0% on the first try · 8% on the second · 3% named the group · 93% fell here
Round 4 of 5 · Genus
the three: Papio·intruder: Macaca
- Celebes Crested MacaqueMacaca nigra
- Olive BaboonPapio anubis
- Kinda BaboonPapio kindae
- Yellow BaboonPapio cynocephalus
0% on the first try · 25% on the second · 5% named the group
Round 5 of 5 · Species
the three: Vulpes vulpes·intruder: Vulpes lagopus
- Arabian Red FoxesVulpes vulpes arabica
- European Red FoxesVulpes vulpes
- Arctic FoxesVulpes lagopus
- European Red FoxesVulpes vulpes
15% on the first try · 50% on the second · 18% named the group

Challenge of October 25, 2026

Domestic Water Buffalo – River Buffalo

Yellow-Bellied Marmot

The skulls

The race

The odd ones out

Challenge of 28 de setembro

Lobo-guará

Lobo-guará

Challenge of October 25, 2026

Domestic Water Buffalo – River Buffalo

Yellow-Bellied Marmot

The skulls

The race

The odd ones out