| Fish... or Not a Fish? | 0 | - | 4.39 | 43,171 |
| Animals by Skeleton Image | 0 | - | 4.80 | 45,913 |
| Animals - Taxonomy to Common Name | 0 | - | 4.79 | 28,073 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,028 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 59,610 |
| Baby, Male and Female Animals | 0 | - | 4.42 | 149,532 |
| Animal Adjectives | 0 | - | 4.77 | 59,803 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,489 |
| Animals: No Vowels #1 | 0 | - | 4.57 | 63,517 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,473 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,182 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,878 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,024 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,371 |
| Words Containing Animals #2 | 0 | - | 4.07 | 34,342 |
| Name that Bug | 0 | - | 4.12 | 45,431 |
| Fish by Picture #2 | 0 | - | 4.08 | 18,375 |
| Bird in the Answers | 0 | - | 4.10 | 33,203 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,089 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,747 |
| Word Scramble - Random Animals | 0 | - | 4.41 | 48,861 |
| Animal Emojis | 0 | - | 4.69 | 83,205 |
| Birds in the Answer | 0 | - | 4.56 | 52,679 |
| North American Bird-Named Teams | 0 | - | 4.43 | 67,597 |
| Animals that Start with L | 0 | - | 4.47 | 101,193 |
| Animals that Start with P | 0 | - | 4.45 | 85,590 |
| Animals that Start with S | 0 | - | 4.49 | 86,757 |
| Biggest Animals by Category | 0 | - | 4.18 | 72,920 |
| Word Scramble - Animals #1 | 0 | - | 4.36 | 137,544 |
| Animal Sounds | 0 | - | 4.26 | 191,082 |
| Words that are Animals | 0 | - | 3.88 | 41,401 |
| Extinct Animals | 0 | - | 4.18 | 27,394 |
| Word Scramble - Animals #2 | 0 | - | 4.39 | 52,231 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,185 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,216 |
| Earliest Domestication of Animals | 0 | - | 4.33 | 28,206 |
| Animals in the News | 0 | - | 4.37 | 26,708 |
| Animals: No Vowels #2 | 0 | - | 4.57 | 21,377 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,838 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,718 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,866 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,801 |
| Largest Types of Birds | 0 | - | 4.19 | 26,883 |
| Bird Knowledge #1 | 0 | - | 4.33 | 15,676 |
| Metals of Antiquity | 0 | - | 4.94 | 92,811 |
| Megadiverse Countries | 0 | - | 4.97 | 133,830 |
| Fictional Animals #1 | 0 | - | 4.06 | 46,330 |
| Animals A-Z #2 | 0 | - | 4.11 | 66,018 |
| Top Countries for Shark Attacks | 0 | - | 4.46 | 45,660 |
| Animals that Start with A | 0 | - | 4.26 | 111,172 |
| Animals that Start with B | 0 | - | 4.31 | 112,658 |
| Animals that Start with C | 0 | - | 4.23 | 92,151 |
| Animals that Start with D | 0 | - | 4.25 | 86,083 |
| Animals that Start with E | 0 | - | 4.28 | 73,336 |
| Animals that Start with F | 0 | - | 4.28 | 106,462 |
| Animals that Start with G | 0 | - | 4.25 | 79,628 |
| Animals that Start with K | 0 | - | 4.06 | 66,151 |
| Animals that Start with M | 0 | - | 4.24 | 83,513 |
| Animals that Start with R | 0 | - | 4.27 | 86,578 |
| Animals that Start with T | 0 | - | 4.32 | 90,591 |
| Animals that Start with H | 0 | - | 4.31 | 85,828 |
| Animals that Start with O | 0 | - | 4.27 | 88,170 |
| Animals that Start with W | 0 | - | 4.35 | 46,795 |
| People with Animal Names #1 | 0 | - | 3.97 | 42,462 |
| Mammals in the Answer | 0 | - | 4.35 | 29,914 |
| Three Letter Animals Quiz | 0 | - | 3.97 | 300,252 |
| Word Puzzles - Animals #1 | 0 | - | 4.37 | 28,505 |
| Word Puzzles - Animals #2 | 0 | - | 4.20 | 24,754 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,533 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,264 |
| Animal Decoder | 0 | - | 4.06 | 15,454 |
| Animal Group Names | 0 | - | 4.06 | 23,092 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,189 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,684 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,360 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,576 |
| Birds A-Z | 0 | - | 4.24 | 36,323 |
| Bear in the Answers | 0 | - | 4.29 | 61,557 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,520 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,332 |
| Countries with Fjords | 0 | - | 4.93 | 100,144 |
| Animal Varieties Quiz #1 | 0 | - | 4.48 | 92,340 |
| Fictional Animals #2 | 0 | - | 3.97 | 36,285 |
| A Whale of a Quiz | 0 | - | 4.41 | 35,947 |
| Animal Varieties #3 | 0 | - | 4.53 | 55,049 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,335 |
| Animal Stereotypes | 0 | - | 4.48 | 36,696 |
| Fictional Birds by Picture | 0 | - | 4.29 | 25,853 |
| 3 and 4 Letter Birds | 0 | - | 4.25 | 23,705 |
| Turkey (The Bird) | 0 | - | 4.15 | 12,380 |
| Horse Vocabulary | 0 | - | 4.22 | 22,662 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,187 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,548 |
| Countries with Glaciers | 0 | - | 4.97 | 104,585 |
| Animal Varieties #2 | 0 | - | 4.40 | 66,376 |
| Types of Bears | 0 | - | 4.51 | 143,061 |
| Deadly Animals | 0 | - | 4.03 | 109,845 |
| Famous Animals #1 | 0 | - | 4.03 | 238,749 |
| Famous Animals #2 | 0 | - | 4.02 | 57,309 |
| Famous Animals Quiz #3 | 0 | - | 4.24 | 43,135 |
| Animal Facts | 0 | - | 4.15 | 42,902 |
| People with Animal Names Quiz #2 | 0 | - | 3.77 | 26,934 |
| Largest Land Animals of Asia | 0 | - | 3.62 | 8,251 |
| Countries with the Most Wolves | 0 | - | 4.92 | 106,952 |
| Three Letter Mammals Quiz | 0 | - | 3.69 | 11,826 |
| Four Letter Mammals Quiz | 0 | - | 3.83 | 12,500 |
| Cat Knowledge | 0 | - | 4.49 | 25,710 |
| Bear Knowledge | 0 | - | 4.54 | 34,974 |
| Cow Knowledge | 0 | - | 4.46 | 24,155 |
| Elephant Knowledge | 0 | - | 4.41 | 23,895 |
| Multiple Choice Animal Quiz #1 | 0 | - | 4.50 | 55,955 |
| Human Taxonomy | 0 | - | 4.68 | 18,822 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,408 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,458 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,993 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,547 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,255 |
| Countries With No Rivers | 0 | - | 4.96 | 75,978 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,168 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,721 |
| North Sea Countries | 0 | - | 4.92 | 86,565 |
| Black Sea Countries | 0 | - | 4.87 | 60,298 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,980 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,074 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,927 |
| French Animal Words | 0 | - | 4.44 | 133,569 |
| Spanish Animal Words | 0 | - | 4.53 | 95,325 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,589 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,579 |
| Animals that Start with N | 0 | - | 3.73 | 31,333 |
| Horse Knowledge | 0 | - | 4.45 | 23,927 |
| Snake Knowledge | 0 | - | 4.49 | 18,717 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,756 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,138 |
| Elements by Picture | 0 | - | 4.27 | 69,487 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,293 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,806 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,323 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,321 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,180 |
| African Great Lakes | 0 | - | 4.82 | 65,034 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,129 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,741 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,164 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,723 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,040 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,622 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,833 |
| Animals of Australia | 0 | - | 4.52 | 42,136 |
| Pack Animals | 0 | - | 4.23 | 10,330 |
| Lion Trivia | 0 | - | 4.19 | 16,362 |
| Countries with More Cows than People | 0 | - | 4.43 | 54,584 |
| Mammal Knowledge #1 | 0 | - | 4.20 | 19,588 |
| Mammal Knowledge #2 | 0 | - | 4.13 | 18,435 |
| Insect Knowledge #1 | 0 | - | 4.38 | 12,294 |
| Insect Knowledge #2 | 0 | - | 4.21 | 8,904 |
| Countries with Wild Lions | 0 | - | 4.77 | 25,935 |
| Birds by Picture #1 | 0 | - | 4.46 | 41,041 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,501 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,249 |
| Elements Named for Countries | 0 | - | 4.52 | 24,344 |
| Albert Einstein Trivia | 0 | - | 4.57 | 18,302 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,094 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,036 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,442 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,037 |
| Least-Forested Countries | 0 | - | 4.53 | 64,864 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,671 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,057 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,725 |
| Asian Physical Geography | 0 | - | 4.61 | 35,358 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,417 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,762 |
| Rivers of the United States | 0 | - | 4.93 | 65,424 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,638 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,005 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,114 |
| Flowers by Picture | 0 | - | 4.46 | 104,978 |
| Animal Idioms Quiz #1 | 0 | - | 4.32 | 42,884 |
| Animal Idioms Quiz #2 | 0 | - | 4.33 | 43,448 |
| Books with Animals in the Title #1 | 0 | - | 4.41 | 74,174 |
| Primate Knowledge | 0 | - | 4.17 | 15,256 |
| Multiple Choice Animal Quiz #2 | 0 | - | 4.21 | 15,382 |
| Birds by Picture #2 | 0 | - | 4.33 | 35,899 |
| Birds by Picture #3 | 0 | - | 4.24 | 32,795 |
| Dog Knowledge | 0 | - | 4.46 | 34,145 |
| Fish Knowledge | 0 | - | 4.38 | 25,474 |
| The Shark Quiz!! | 0 | - | 4.25 | 24,589 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 68,628 |
| The Diseases They Had | 0 | - | 4.15 | 13,875 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,093 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,381 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,651 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,409 |
| Geological Extremes | 0 | - | 4.34 | 39,922 |
| Landforms by Country | 0 | - | 4.52 | 51,909 |
| African Physical Geography | 0 | - | 4.51 | 31,556 |
| European Physical Geography | 0 | - | 4.26 | 33,364 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,875 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,291 |
