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 16, 2026

Photos: Skullbase, Wikipedia

ClassicEasier than 83% of days

Common swift

Apus apus

Aves/Caprimulgiformes/Apodidae/Apus/Apus apus

Players: 47
Median time: 4 sec

Solved on try

183%
29%
30%
40%
×9%

Most confused with

Western jackdawCorvus monedula2 of 47
Blue-and-gold MacawAra ararauna1 of 47
Golden-Mantled Ground SquirrelCallospermophilus lateralis1 of 47

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyEasier than 56% of days

Mantled Howler

Alouatta palliata

Where the community fell · players: 45

ClassMammalia98%
OrderPrimates98%
FamilyAtelidae73%
24% fell here · Most picked wrong answer: Ardeidae (3 of 44)
GenusAlouatta56%
SpeciesAlouatta palliata53%

53% reached the species

Skull MatchEasier than 69% of days

The skulls

Humboldt’S Squirrel MonkeySaimiri cassiquiarensis
Olive Baboon/Yellow Baboon HybridPapio anubis x Papio cynocephalus
Colombian Red HowlerAlouatta seniculus
Greater Spot-Nosed MonkeyCercopithecus nictitans

Decoy namesPanamanian White-Faced Capuchin, White-Fronted Surili

Players: 44
Matched them all: 73%
Mistakes on average: 2.4

Most common swap

Greater Spot-Nosed Monkey taken for Panamanian White-Faced Capuchin×24
Greater Spot-Nosed Monkey taken for White-Fronted Surili×20
Humboldt’S Squirrel Monkey taken for Panamanian White-Faced Capuchin×13

Speed RunHarder than 79% of days

The race

Players: 45
Finished: 82%
Median time: 34 sec
Median score: 5,829
Best score: 7,196

Skulls reached

1082%
94%
72%
54%
32%
14%

The skulls of the race · players: 45

1. Crowned Guenon57% on the first try
2. North American Porcupine77% on the first try
3. Common bream63% on the first try
4. Eastern gray squirrel76% on the first try
5. Common Brown Lemur55% on the first try
6. Brown Bears68% on the first try
7. Coyotes75% on the first try
8. Grey Herons97% on the first try
9. Mantled guereza64% on the first try
10. Horsfield's Tree Shrews84% on the first try

Toughest skull: Mantled guereza · 36% fell here · median time 2.3 sec

Odd One OutEasier than 86% of days

The odd ones out

Players: 42
Won: 98%
Found on average: 4/5

Round 1 of 5 · Class
the three: Amphibia·intruder: Mammalia
- Asian common toadDuttaphrynus melanostictus
- Smooth NewtLissotriton vulgaris
- European Common FrogsRana temporaria
- Humboldt’S Squirrel MonkeySaimiri cassiquiarensis
98% on the first try · 2% on the second · 67% named the group
Round 2 of 5 · Order
the three: Procellariiformes·intruder: Passeriformes
- Atlantic Yellow-nosed AlbatrossThalassarche chlororhynchos
- Northern FulmarFulmarus glacialis
- Common RavensCorvus corax
- black-browed albatrossThalassarche melanophris
100% on the first try · 0% on the second · 24% named the group
Round 3 of 5 · Family
the three: Felidae·intruder: Hyaenidae
- Carpathian lynxLynx lynx carpathicus
- Brown HyenaParahyaena brunnea
- Tigers [Unknown ssp.]Panthera tigris
- Clouded Leopard [Mainland]Neofelis nebulosa
45% on the first try · 21% on the second · 64% named the group
Round 4 of 5 · Genus
the three: Papio·intruder: Macaca
- Yellow BaboonPapio cynocephalus
- Olive Baboon/Yellow Baboon HybridPapio anubis x Papio cynocephalus
- Chacma BaboonPapio ursinus
- Rhesus MacaqueMacaca mulatta
93% on the first try · 5% on the second · 52% named the group
Round 5 of 5 · Species
the three: Canis lupus·intruder: Canis latrans
- Gray wolfCanis lupus
- DingosCanis lupus dingo
- Eurasian wolf / European WolfCanis lupus lupus
- Southeastern coyoteCanis latrans frustor
17% on the first try · 21% on the second · 7% named the group · 62% fell here

Play today’s challenge Past challenges

Challenge of October 16, 2026

Photos: Skullbase, Wikipedia

ClassicEasier than 83% of days

Common swift

Apus apus

Aves/Caprimulgiformes/Apodidae/Apus/Apus apus

Players: 47
Median time: 4 sec

Solved on try

183%
29%
30%
40%
×9%

Most confused with

Western jackdawCorvus monedula2 of 47
Blue-and-gold MacawAra ararauna1 of 47
Golden-Mantled Ground SquirrelCallospermophilus lateralis1 of 47

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyEasier than 56% of days

Mantled Howler

Alouatta palliata

Where the community fell · players: 45

ClassMammalia98%
OrderPrimates98%
FamilyAtelidae73%
24% fell here · Most picked wrong answer: Ardeidae (3 of 44)
GenusAlouatta56%
SpeciesAlouatta palliata53%

53% reached the species

Skull MatchEasier than 69% of days

The skulls

Humboldt’S Squirrel MonkeySaimiri cassiquiarensis
Olive Baboon/Yellow Baboon HybridPapio anubis x Papio cynocephalus
Colombian Red HowlerAlouatta seniculus
Greater Spot-Nosed MonkeyCercopithecus nictitans

Decoy namesPanamanian White-Faced Capuchin, White-Fronted Surili

Players: 44
Matched them all: 73%
Mistakes on average: 2.4

Most common swap

Greater Spot-Nosed Monkey taken for Panamanian White-Faced Capuchin×24
Greater Spot-Nosed Monkey taken for White-Fronted Surili×20
Humboldt’S Squirrel Monkey taken for Panamanian White-Faced Capuchin×13

Speed RunHarder than 79% of days

The race

Players: 45
Finished: 82%
Median time: 34 sec
Median score: 5,829
Best score: 7,196

Skulls reached

1082%
94%
72%
54%
32%
14%

The skulls of the race · players: 45

1. Crowned Guenon57% on the first try
2. North American Porcupine77% on the first try
3. Common bream63% on the first try
4. Eastern gray squirrel76% on the first try
5. Common Brown Lemur55% on the first try
6. Brown Bears68% on the first try
7. Coyotes75% on the first try
8. Grey Herons97% on the first try
9. Mantled guereza64% on the first try
10. Horsfield's Tree Shrews84% on the first try

Toughest skull: Mantled guereza · 36% fell here · median time 2.3 sec

Odd One OutEasier than 86% of days

The odd ones out

Players: 42
Won: 98%
Found on average: 4/5

Round 1 of 5 · Class
the three: Amphibia·intruder: Mammalia
- Asian common toadDuttaphrynus melanostictus
- Smooth NewtLissotriton vulgaris
- European Common FrogsRana temporaria
- Humboldt’S Squirrel MonkeySaimiri cassiquiarensis
98% on the first try · 2% on the second · 67% named the group
Round 2 of 5 · Order
the three: Procellariiformes·intruder: Passeriformes
- Atlantic Yellow-nosed AlbatrossThalassarche chlororhynchos
- Northern FulmarFulmarus glacialis
- Common RavensCorvus corax
- black-browed albatrossThalassarche melanophris
100% on the first try · 0% on the second · 24% named the group
Round 3 of 5 · Family
the three: Felidae·intruder: Hyaenidae
- Carpathian lynxLynx lynx carpathicus
- Brown HyenaParahyaena brunnea
- Tigers [Unknown ssp.]Panthera tigris
- Clouded Leopard [Mainland]Neofelis nebulosa
45% on the first try · 21% on the second · 64% named the group
Round 4 of 5 · Genus
the three: Papio·intruder: Macaca
- Yellow BaboonPapio cynocephalus
- Olive Baboon/Yellow Baboon HybridPapio anubis x Papio cynocephalus
- Chacma BaboonPapio ursinus
- Rhesus MacaqueMacaca mulatta
93% on the first try · 5% on the second · 52% named the group
Round 5 of 5 · Species
the three: Canis lupus·intruder: Canis latrans
- Gray wolfCanis lupus
- DingosCanis lupus dingo
- Eurasian wolf / European WolfCanis lupus lupus
- Southeastern coyoteCanis latrans frustor
17% on the first try · 21% on the second · 7% named the group · 62% fell here

Challenge of October 16, 2026

Common swift

Mantled Howler

The skulls

The race

The odd ones out

Challenge of 28 de setembro

Lobo-guará

Lobo-guará

Challenge of October 16, 2026

Common swift

Mantled Howler

The skulls

The race

The odd ones out