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 18, 2026

Photos: Skullbase, Wikipedia

ClassicHarder than 99% of days

Russian tortoise

Agrionemys horsfieldii

Reptilia/Testudines/Testudinidae/Agrionemys/Agrionemys horsfieldii

Players: 46
Median time: 7 sec

Solved on try

126%
239%
30%
40%
×35%

Most confused with

African spurred tortoiseCentrochelys sulcata13 of 46
Aldabra Giant TortoisesAldabrachelys gigantea13 of 46
Alligator Snapping TurtlesMacrochelys temminckii7 of 46

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyHarder than 80% of days

Mountain Beaver

Aplodontia rufa

Where the community fell · players: 42

ClassMammalia95%
OrderRodentia95%
FamilyAplodontiidae62%
33% fell here · Most picked wrong answer: Tragulidae (2 of 40)
GenusAplodontia52%
SpeciesAplodontia rufa33%

33% reached the species

Skull MatchHarder than 79% of days

The skulls

Syrian HamsterMesocricetus auratus
Forest Giant SquirrelProtoxerus stangeri
PacaranaDinomys branickii
Lesser Egyptian JerboaJaculus jaculus

Decoy namesNorthern Flying Squirrel, Greater Cane Rats

Players: 42
Matched them all: 40%
Mistakes on average: 3.5

Most common swap

Pacarana taken for Greater Cane Rats×17
Forest Giant Squirrel taken for Northern Flying Squirrel×13
Pacarana taken for Forest Giant Squirrel×12

Speed RunHarder than 81% of days

The race

Players: 42
Finished: 81%
Median time: 35 sec
Median score: 6,008
Best score: 7,378

Skulls reached

1081%
95%
82%
62%
52%
17%

The skulls of the race · players: 42

1. Fishing Cat72% on the first try
2. Mandrill69% on the first try
3. Western jackdaw59% on the first try
4. Pallas Cats85% on the first try
5. Brown Bears64% on the first try
6. Coypu58% on the first try
7. South American Fur Seals92% on the first try
8. South American coati62% on the first try
9. Emerald tree boa86% on the first try
10. Ostrich88% on the first try

Toughest skull: South American coati · 38% fell here · median time 2.3 sec

Odd One OutHarder than 59% of days

The odd ones out

Players: 37
Won: 89%
Found on average: 3.5/5

Round 1 of 5 · Class
the three: Aves·intruder: Reptilia
- Pale-Billed AracariPteroglossus erythropygius
- OstrichStruthio camelus
- Alligator Snapping TurtlesMacrochelys temminckii
- MallardsAnas platyrhynchos
86% on the first try · 14% on the second · 89% named the group
Round 2 of 5 · Order
the three: Rodentia·intruder: Eulipotyphla
- Greater Cane RatsThryonomys swinderianus
- Northern white-breasted hedgehogErinaceus roumanicus
- Asiatic Brush-Tailed PorcupineAtherurus macrourus
- Merriam’S Kangaroo RatDipodomys ordii
92% on the first try · 8% on the second · 97% named the group
Round 3 of 5 · Family
the three: Mustelidae·intruder: Herpestidae
- MeerkatsSuricata suricatta
- Lesser GrisonGalictis cuja
- Sea OtterEnhydra lutris
- WolverineGulo gulo
14% on the first try · 35% on the second · 38% named the group
Round 4 of 5 · Genus
the three: Mustela·intruder: Martes
- SablesMartes zibellina
- European polecatMustela putorius
- Middle Russian stoatMustela erminea aestiva
- Siberian WeaselsMustela sibirica
19% on the first try · 19% on the second · 14% named the group · 62% fell here
Round 5 of 5 · Species
the three: Sciurus aberti·intruder: Sciurus carolinensis
- Eastern gray squirrelSciurus carolinensis
- Abert’S SquirrelSciurus aberti
- Abert’S SquirrelSciurus aberti
- Abert’S SquirrelSciurus aberti
46% on the first try · 16% on the second · 5% named the group

Play today’s challenge Past challenges

Challenge of October 18, 2026

Photos: Skullbase, Wikipedia

ClassicHarder than 99% of days

Russian tortoise

Agrionemys horsfieldii

Reptilia/Testudines/Testudinidae/Agrionemys/Agrionemys horsfieldii

Players: 46
Median time: 7 sec

Solved on try

126%
239%
30%
40%
×35%

Most confused with

African spurred tortoiseCentrochelys sulcata13 of 46
Aldabra Giant TortoisesAldabrachelys gigantea13 of 46
Alligator Snapping TurtlesMacrochelys temminckii7 of 46

Photos: Slow Cheetah Skeletons, Wikipedia

TaxonomyHarder than 80% of days

Mountain Beaver

Aplodontia rufa

Where the community fell · players: 42

ClassMammalia95%
OrderRodentia95%
FamilyAplodontiidae62%
33% fell here · Most picked wrong answer: Tragulidae (2 of 40)
GenusAplodontia52%
SpeciesAplodontia rufa33%

33% reached the species

Skull MatchHarder than 79% of days

The skulls

Syrian HamsterMesocricetus auratus
Forest Giant SquirrelProtoxerus stangeri
PacaranaDinomys branickii
Lesser Egyptian JerboaJaculus jaculus

Decoy namesNorthern Flying Squirrel, Greater Cane Rats

Players: 42
Matched them all: 40%
Mistakes on average: 3.5

Most common swap

Pacarana taken for Greater Cane Rats×17
Forest Giant Squirrel taken for Northern Flying Squirrel×13
Pacarana taken for Forest Giant Squirrel×12

Speed RunHarder than 81% of days

The race

Players: 42
Finished: 81%
Median time: 35 sec
Median score: 6,008
Best score: 7,378

Skulls reached

1081%
95%
82%
62%
52%
17%

The skulls of the race · players: 42

1. Fishing Cat72% on the first try
2. Mandrill69% on the first try
3. Western jackdaw59% on the first try
4. Pallas Cats85% on the first try
5. Brown Bears64% on the first try
6. Coypu58% on the first try
7. South American Fur Seals92% on the first try
8. South American coati62% on the first try
9. Emerald tree boa86% on the first try
10. Ostrich88% on the first try

Toughest skull: South American coati · 38% fell here · median time 2.3 sec

Odd One OutHarder than 59% of days

The odd ones out

Players: 37
Won: 89%
Found on average: 3.5/5

Round 1 of 5 · Class
the three: Aves·intruder: Reptilia
- Pale-Billed AracariPteroglossus erythropygius
- OstrichStruthio camelus
- Alligator Snapping TurtlesMacrochelys temminckii
- MallardsAnas platyrhynchos
86% on the first try · 14% on the second · 89% named the group
Round 2 of 5 · Order
the three: Rodentia·intruder: Eulipotyphla
- Greater Cane RatsThryonomys swinderianus
- Northern white-breasted hedgehogErinaceus roumanicus
- Asiatic Brush-Tailed PorcupineAtherurus macrourus
- Merriam’S Kangaroo RatDipodomys ordii
92% on the first try · 8% on the second · 97% named the group
Round 3 of 5 · Family
the three: Mustelidae·intruder: Herpestidae
- MeerkatsSuricata suricatta
- Lesser GrisonGalictis cuja
- Sea OtterEnhydra lutris
- WolverineGulo gulo
14% on the first try · 35% on the second · 38% named the group
Round 4 of 5 · Genus
the three: Mustela·intruder: Martes
- SablesMartes zibellina
- European polecatMustela putorius
- Middle Russian stoatMustela erminea aestiva
- Siberian WeaselsMustela sibirica
19% on the first try · 19% on the second · 14% named the group · 62% fell here
Round 5 of 5 · Species
the three: Sciurus aberti·intruder: Sciurus carolinensis
- Eastern gray squirrelSciurus carolinensis
- Abert’S SquirrelSciurus aberti
- Abert’S SquirrelSciurus aberti
- Abert’S SquirrelSciurus aberti
46% on the first try · 16% on the second · 5% named the group

Challenge of October 18, 2026

Russian tortoise

Mountain Beaver

The skulls

The race

The odd ones out

Challenge of 28 de setembro

Lobo-guará

Lobo-guará

Challenge of October 18, 2026

Russian tortoise

Mountain Beaver

The skulls

The race

The odd ones out