| Fish by Picture #1 | 0 | - | 4.41 | 108,402 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,230 |
| Name that Bug | 0 | - | 4.12 | 45,523 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,305 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,528 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,501 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,134 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,581 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,168 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,759 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,805 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,276 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,018 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,063 |
| Fish by Picture #2 | 0 | - | 4.06 | 18,512 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,121 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,844 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,438 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,280 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,631 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,600 |
| Animals in World History | 0 | - | 4.74 | 44,408 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,961 |
| Top Countries for Shark Attacks | 0 | - | 4.46 | 45,778 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,671 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,822 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,777 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,638 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,893 |
| Flowers by Picture | 0 | - | 4.46 | 105,550 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,431 |
| Empires by Maps | 0 | - | 4.98 | 119,809 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,472 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,160 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,147 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,789 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,559 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,171 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 103,771 |
| Play-Doh People from History | 0 | - | 4.99 | 94,509 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,791 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,165 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,334 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,386 |
| All Country Flags of the World | 0 | - | 5.00 | 3,642,399 |
| Name the Cat Flags | 0 | - | 5.00 | 40,243 |
| Extinct Animals | 0 | - | 4.21 | 27,477 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,330 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,241 |
| Animals in the News | 0 | - | 4.37 | 26,770 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,208 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 68,896 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,289 |
| Megadiverse Countries | 0 | - | 4.96 | 134,704 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,233 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,070 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,533,472 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,044 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,198 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,766 |
| Old World... or New World? | 0 | - | 4.66 | 21,293 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,395 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,292 |
| Flags with Crescents | 0 | - | 4.98 | 168,873 |
| Country Flag Trivia | 0 | - | 4.81 | 56,667 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,292 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,142 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 86,892 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,024 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,927 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,313 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,541 |
| Real vs. Fake Flags | 0 | - | 4.98 | 123,639 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,801 |
| National Football Team Logos | 0 | - | 4.85 | 179,827 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,240 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,736 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,729 |
| Countries with Fjords | 0 | - | 4.93 | 100,724 |
| Years in History by Picture | 0 | - | 4.44 | 35,404 |
| Where Are These Doors? | 0 | - | 4.45 | 29,890 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,553 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,689 |
| Flags to Languages | 0 | - | 4.95 | 173,273 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,288 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,341 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,717 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,841 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 20,663 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,800 |
| Fruits by Picture | 0 | - | 4.19 | 806,401 |
| Old Movies by Picture | 0 | - | 4.51 | 25,026 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,910 |
| Star Wars Original Trilogy Characters by Picture | 0 | - | 4.91 | 48,834 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,962 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 336,896 |
| Geography by Picture - B | 0 | - | 4.42 | 55,538 |
| Geography by Picture - H | 0 | - | 4.50 | 58,166 |
| Geography by Picture - N | 0 | - | 4.45 | 42,151 |
| Geography by Picture - R | 0 | - | 4.56 | 40,969 |
| Geography by Picture - T | 0 | - | 4.54 | 57,784 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,824 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 536,880 |
| Random Logos Quiz | 0 | - | 4.31 | 207,989 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 114,545 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,327 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,948 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,859 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,511 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,719 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,289 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,561 |
| Countries with the Most Lakes Over 100 Km² | 0 | - | 4.84 | 32,093 |
| Countries With No Rivers | 0 | - | 4.96 | 76,637 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,889 |
| Rivers in History | 0 | - | 4.92 | 33,182 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,960 |
| North Sea Countries | 0 | - | 4.92 | 87,258 |
| Black Sea Countries | 0 | - | 4.87 | 60,557 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,275 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,385 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,151 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,290 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,844 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,585 |
| Elements by Picture | 0 | - | 4.27 | 69,798 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,262 |
| Islands by Picture | 0 | - | 4.29 | 106,608 |
| Name that Object #1 | 0 | - | 3.57 | 96,453 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,201 |
| WWII Figures by Picture | 0 | - | 4.89 | 64,938 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,431 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,084 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,929 |
| International Footballers by Picture | 0 | - | 4.50 | 55,311 |
| Name that Historical Figure #2 | 0 | - | 4.41 | 283,991 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,353 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,664 |
| Geography by Picture - A | 0 | - | 4.39 | 60,178 |
| Geography by Picture - D | 0 | - | 4.15 | 45,595 |
| Geography by Picture - F | 0 | - | 4.31 | 50,929 |
| Geography by Picture - G | 0 | - | 4.38 | 47,899 |
| Geography by Picture - J | 0 | - | 4.16 | 38,415 |
| Geography by Picture - K | 0 | - | 4.29 | 33,083 |
| Geography by Picture - C | 0 | - | 4.31 | 57,018 |
| Geography by Picture - L | 0 | - | 4.37 | 58,884 |
| Geography by Picture - M | 0 | - | 4.14 | 40,409 |
| Geography by Picture - P | 0 | - | 4.24 | 42,386 |
| Geography by Picture - S | 0 | - | 4.38 | 46,997 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,775 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,202 |
| Flag Maths | 0 | - | 4.64 | 57,736 |
| Satellite Images #1 | 0 | - | 4.46 | 129,256 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,211 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,831 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,831 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,916 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,780 |
| Soccer Team Logos | 0 | - | 4.26 | 373,304 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,415,766 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 179,006 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 261,082 |
| Video Game Logos Quiz | 0 | - | 4.40 | 183,557 |
| Movie Logos | 0 | - | 4.33 | 237,629 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,454 |
| Brand Logos That Start with A | 0 | - | 4.52 | 69,975 |
| History by Picture - A | 0 | - | 4.25 | 45,708 |
| History by Picture - B | 0 | - | 4.40 | 48,861 |
| History by Picture - C | 0 | - | 4.36 | 54,383 |
| History by Picture - F | 0 | - | 4.35 | 37,814 |
| History by Picture - G | 0 | - | 4.40 | 42,072 |
| History by Picture - D | 0 | - | 4.29 | 44,240 |
| History by Picture - E | 0 | - | 4.27 | 43,845 |
| History by Picture - H | 0 | - | 4.37 | 36,732 |
| History by Picture - K | 0 | - | 4.35 | 33,301 |
| History by Picture - M | 0 | - | 4.17 | 36,094 |
| History by Picture - N | 0 | - | 4.40 | 41,190 |
| History by Picture - O | 0 | - | 4.39 | 36,250 |
| History by Picture - T | 0 | - | 4.20 | 33,263 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,139 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,169 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,484 |
| Words Containing Animals #2 | 0 | - | 4.07 | 34,420 |
| Animal Adjectives | 0 | - | 4.77 | 59,948 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,222 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 63,927 |
| Bird in the Answers | 0 | - | 4.11 | 33,511 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,151 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,463 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,588 |
| African Great Lakes | 0 | - | 4.82 | 65,939 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,403 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,285 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,538 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,998 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,299 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,287 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,279 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,886 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,097 |
