| 2,277 | Animal Decoder #2 |
| 2,238 | Flags of Countries That Border the North Sea |
| 2,230 | 15 Deadliest Animals List |
| 2,224 | Biology General Knowledge |
| 2,223 | They’re Rocks - Sudden Death |
| 2,212 | 99 Birds |
| 2,201 | Countries by Unique Animals |
| 2,201 | Geologic Eons, Eras and Periods |
| 2,193 | Click to Complete the Animated Movie Title - Animals #1 |
| 2,191 | Shark Identification #1 (Picture Hints) |
| 2,169 | Top 15 Most Popular Horse Breeds |
| 2,167 | Rivers in the Map of Europe |
| 2,166 | Animals 3-4 Letters |
| 2,165 | Animals By Picture - Wild Cats |
| 2,096 | Countries that Touch the Most Seas |
| 2,096 | Landlocked Countries Whose Only Borders are with Countries With Coastlines |
| 2,077 | Countries Bordering the Aegean Sea - Map Quiz |
| 2,068 | Famous Lakes on a World Map |
| 2,049 | Longest rivers in Poland |
| 2,042 | Animal Look-Alikes #2 |
| 2,014 | Birds of Prey |
| 2,011 | Rivers of Great Britain |
| 2,009 | Cats Trivia |
| 1,994 | Longest Rivers in Countries |
| 1,987 | Largest Deserts |
| 1,984 | 50 Largest Lakes in the World Quiz |
| 1,957 | Danube River Basin Countries on a Map |
| 1,947 | Top 10 Countries with the Most Domestic Cats |
| 1,941 | Random Animals by Picture |
| 1,944 | Sequential US Rivers and Cities |
| 1,914 | Songs With a Billion Streams - Sudden Death |
| 1,903 | 99 Fish |
| 1,901 | Countries with Polar Bears |
| 1,892 | Vertebrates - Sudden Death |
| 1,879 | Guess The Animal By Ear |
| 1,851 | Seas on the Map of Europe |
| 1,848 | Animals by Picture - B |
| 1,847 | Birds of Ireland by Picture |
| 1,845 | Top 10 Most Dangerous Sharks to Humans |
| 1,843 | Countries with Two or More Coastlines |
| 1,842 | Countries with shortest coastline |
| 1,858 | Dinosaurs - Sudden Death |
| 1,832 | Car Logos A - Z |
| 1,832 | U.S. States that Start With a Vowel |
| 1,801 | Name a Valid River |
| 1,763 | European Rivers - Sudden Death |
| 1,751 | Where Does It Grow? Click Quiz #3 |
| 1,734 | Animals that begin with P. |
| 1,712 | Countries with the longest Total Borders and Coastline |
| 1,710 | Countries With Wild Capybaras |
| 1,709 | Rivers by Country |
| 1,708 | Flags with trees on |
| 1,704 | Name a Valid Country by Animal |
| 1,679 | Countries with Longest Maximum Distances to the Ocean |
| 1,678 | Horse knowledge |
| 1,665 | Cross the River |
| 1,643 | Animals that start with J |
| 1,642 | Countries with multiple coastlines |
| 1,639 | Most Dangerous People Food for Dogs |
| 1,639 | Biology General Knowledge #3 |
| 1,622 | 10 Most Popular Pets |
| 1,613 | Click to Complete the Song Title - Animals #2 |
| 1,597 | Shark Identification #2 (Picture Hints) |
| 1,582 | 100 Seas of the World by Bordering Sea in 30 seconds |
| 1,576 | Disney Animals |
| 1,552 | Countries Bordering the Indian Ocean Empty Map Quiz |
| 1,540 | Cartoon Animals |
| 1,502 | World Rivers Map Quiz |
| 1,503 | Mainland Countries with the Shortest Coastlines |
| 1,498 | Top 100 Largest Mammals |
| 1,496 | Countries with the Most Volcanoes |
| 1,487 | Most Popular Flowers |
| 1,487 | Dog Breeds by Picture #1 |
| 1,476 | Name Every Type of Bird |
| 1,477 | Fill the world map by naming rivers |
| 1,464 | Famous Fictional Dogs - Sudden Death |
| 1,456 | 100 most popular dog breeds |
| 1,453 | Animals by Picture - A |
| 1,452 | Rivers - Sudden Death |
| 1,449 | Most Viewed Animals on Wikipedia |
| 1,448 | Dinosaurs - Name Meanings |
| 1,441 | 100 Longest Rivers in Oceania - with a Map |
| 1,436 | Rivers of Russia |
| 1,434 | Top 10 Countries with the Most Goats |
| 1,428 | Name Every North American Bird |
| 1,427 | Three Real and One Fake - Friends |
| 1,427 | Dinosaurs by Picture |
| 1,421 | Flags with birds – sudden death |
| 1,412 | The Viking World |
| 1,396 | UK Birds |
| 1,387 | Seas - Sudden Death |
| 1,387 | Biggest World Cities on Lakes |
| 1,381 | Dog breed anagram |
| 1,377 | Countries with the most long rivers |
| 1,374 | Countries with Giant Pandas |
| 1,369 | Countries with the Most Moose |
| 1,367 | Mississippi Basin Rivers on a Map - Extreme |
| 1,362 | Countries with Highest Coast-to-Land Border Ratio |
| 1,358 | Large Animals: Living, Extinct, and Mythical |
| 1,351 | Monkeys and Apes - Picture Click Quiz |
| 1,343 | 5 Most Common House Pets |
| 1,336 | Emoji Animals |
| 1,331 | Gardening & Plants General Knowledge #1 |
| 1,329 | US States with Shortest Maximum Distances to the Ocean |
| 1,324 | Trees by Picture |
| 1,313 | Countries with less than 100km of Coastline |
| 1,305 | Animals that Start with I |
| 1,304 | All Mediterranean seas |
| 1,303 | Countries with Brown Bears |
| 1,302 | Insect... or Not an Insect? |
| 1,300 | Groups of Countries By Bordering Sea #1 |
| 1,298 | Multiple Capitals on Rivers |
| 1,286 | ANIMAL Pictures 1 |
| 1,281 | Sequential Cities in the Nile River Basin |
| 1,273 | Big Cats By Picture |
| 1,272 | Seas of the World |
| 1,267 | Top landforms by starting letter: Mountains, Rivers, Lakes, Islands |
| 1,243 | Bird... or Fish? |
| 1,244 | Animals By Picture - Close Up Feet |
| 1,237 | "C" animal quiz |
| 1,220 | Dinosaur to Period Click Quiz |
| 1,212 | Small Countries with the Most Coastline - with Exceptions |
| 1,206 | Mississippi-Missouri Basin States and Provinces |
| 1,201 | Croatian rivers |
| 1,198 | Reptile... or Amphibian? |
| 1,194 | Most Common Names For Pets: Dogs - Boy |
| 1,191 | Click to Complete the Animated Movie Title - Animals #2 |
| 1,188 | 40 Lakes on the World Map |
| 1,183 | Elephant Trivia Multiple Choice |
| 1,174 | Sharks by Picture |
| 1,171 | Random Australian Birds by Picture |
| 1,162 | Most Populous Countries by Bordering Sea |
| 1,154 | Canine or Feline |
| 1,154 | Countries without coastline |
| 1,149 | Horse Colour Quiz |
| 1,148 | US States Hit Directly by the Most Hurricanes |
| 1,137 | Guess the Animal by the Picture - A |
| 1,138 | Countries with Wild Pangolins |
| 1,136 | Countries by River |
| 1,135 | Baltic Sea General Knowledge |
| 1,128 | Ocean Animals by Picture |
| 1,119 | Animal and nature |
| 1,107 | Insects A-Z |
| 1,099 | National Animals of Countries |
| 1,086 | British Birds by Picture |
| 1,085 | German animal words in English |
| 1,077 | Dog Breeds of the AKC - Hound Group |
| 1,072 | Longest Rivers in the US |
| 1,070 | Biggest rivers in the world by drainage basins area |
| 1,068 | Countries named after rivers |
| 1,065 | Dog Breeds by Picture #2 |
| 1,064 | Animals Trivia - Groups of Five |
| 1,063 | Five Countries With the Longest Coastline by Continent |
| 1,061 | Dick or Tit? - Click Quiz |
| 1,060 | Cities in the Colorado River Basin on a Map |
| 1,056 | States With the Most Bird Species |
| 1,051 | Caribbean Sea General Knowledge |
| 1,039 | Lakes A-Z |
| 1,036 | European Countries by Largest Wild Animal |
| 1,036 | Huge List of U.S. Bodies of Water |
| 1,036 | Largest Countries with the Least Coastline |
| 1,034 | Dog... or Cat? |
| 1,031 | Animal General Knowledge #1 |
| 1,025 | Ultimate "Lake" Geography Quiz |
| 1,023 | Animal Names Created by Only 2 Letters |
| 1,021 | Pretty Fly for a Picture Quiz |
| 1,020 | Group of Animals |
| 1,019 | Name a Valid Sea |
| 1,018 | Killer Whale Quiz |
| 1,017 | Insect Orders |
| 1,017 | Animals That Have 'Sea' in Their Name |
| 1,016 | Countries with the Most Reptile Species |
| 998 | The Shark Quiz |
| 997 | African Savanna Animals by Picture |
| 993 | All Birds of the Contiguous United States (Easy) |
| 991 | Countries with the Most Long Rivers |
| 990 | Five Biggest Countries by Sea |
| 989 | Top 10 shark attack countries |
| 989 | Answers Contain "Bay" |
| 986 | Dog Breeds of the AKC - Herding Group |
| 985 | Baby Animals-what are they called? |
| 984 | 4-Letter Animals |
| 983 | Countries that Block Other Countries from Water |
| 972 | Name the Tectonic Plates |
| 967 | Monkey Countries Quiz |
| 964 | 4-Letter Animals - Picture Quiz |
| 958 | Organelles of a Cell Map Quiz |
| 958 | Top 10 Countries with the Most Rabbits |
| 955 | Horse facts: true or false |
| 953 | Top 50 UK Garden Birds |
| 952 | Sharks: Test Your Knowledge |
| 952 | Animal Symbols of Greek Gods and Goddesses |
| 948 | 50 Biggest Cities along the Rhine River with a Blank Map |
| 940 | Deadly Snakes |
