| Animals by Skeleton Image | 0 | - | 4.81 | 47,088 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,162 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 56,024 |
| Name that Bug | 0 | - | 4.12 | 45,663 |
| Animals by Close-up Image | 0 | - | 4.42 | 219,614 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 46,088 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,571 |
| Mammals by Picture #1 | 0 | - | 4.69 | 92,623 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,815 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,937 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,852 |
| Animals A-Z by Picture | 0 | - | 4.08 | 67,012 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,591 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,395 |
| Fish by Picture #2 | 0 | - | 4.09 | 18,788 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,653 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,806 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,897 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,408 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,954 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,787 |
| Animals in World History | 0 | - | 4.74 | 44,734 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,303 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,975 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,842 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,251 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,134 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,862 |
| Top 15 Countries with the Most Cows | 0 | - | 4.72 | 107,556 |
| Flowers by Picture | 0 | - | 4.46 | 105,904 |
| Former Countries by Territory Map | 0 | - | 4.96 | 104,306 |
| Empires by Maps | 0 | - | 4.98 | 122,717 |
| Birds by Picture #1 | 0 | - | 4.47 | 42,174 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,738 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,777 |
| North American Bird-Named Teams | 0 | - | 4.44 | 68,046 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,691 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,624 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,795 |
| Play-Doh People from History | 0 | - | 4.99 | 95,847 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,791 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 50,194 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 50,248 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,329 |
| All Country Flags of the World | 0 | - | 5.00 | 3,729,569 |
| Name the Cat Flags | 0 | - | 5.00 | 40,713 |
| Extinct Animals | 0 | - | 4.13 | 27,600 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,522 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,331 |
| Animals in the News | 0 | - | 4.37 | 26,850 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,656 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,348 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,363 |
| Megadiverse Countries | 0 | - | 4.96 | 149,809 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,813 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,823 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,561 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,548,590 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,098,687 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 737,405 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 19,073 |
| Old World... or New World? | 0 | - | 4.66 | 21,492 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,834 |
| Make a Stained Glass Window | 0 | - | 5.00 | 69,255 |
| Flags with Crescents | 0 | - | 4.98 | 171,882 |
| Country Flag Trivia | 0 | - | 4.82 | 58,393 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 105,267 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,710 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 89,017 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 68,179 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 86,238 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 61,255 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,694 |
| Real vs. Fake Flags | 0 | - | 4.98 | 126,206 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,920 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 185,253 |
| National Football Team Logos | 0 | - | 4.82 | 195,312 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,335 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,834 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,558 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,281 |
| Countries with Fjords | 0 | - | 4.94 | 101,660 |
| Years in History by Picture | 0 | - | 4.45 | 35,967 |
| Where Are These Doors? | 0 | - | 4.45 | 30,285 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,594 |
| Flags to Languages | 0 | - | 4.95 | 174,810 |
| Merged Company Logos #2 | 0 | - | 4.75 | 78,522 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 51,190 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,330 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,903 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,885 |
| Fruits by Picture | 0 | - | 4.19 | 810,000 |
| Old Movies by Picture | 0 | - | 4.51 | 25,301 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,360 |
| Star Wars Original Trilogy Characters by Picture | 0 | - | 4.92 | 50,433 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,875 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 341,257 |
| Geography by Picture - B | 0 | - | 4.42 | 55,847 |
| Geography by Picture - H | 0 | - | 4.50 | 58,448 |
| Geography by Picture - N | 0 | - | 4.45 | 42,412 |
| Geography by Picture - R | 0 | - | 4.56 | 41,210 |
| Geography by Picture - T | 0 | - | 4.54 | 58,068 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,723 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 545,678 |
| Random Logos Quiz | 0 | - | 4.33 | 210,040 |
| All North American Pro Sports Logos | 0 | - | 4.72 | 116,771 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,713 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,343 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,335 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,869 |
| Pictures by Letter - M | 0 | - | 4.24 | 38,076 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,947 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,365 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,919 |
| Countries with the Most Lakes Over 100 Km² | 0 | - | 4.85 | 32,860 |
| Countries With No Rivers | 0 | - | 4.96 | 77,291 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,209 |
| Rivers in History | 0 | - | 4.92 | 33,540 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,237 |
| North Sea Countries | 0 | - | 4.92 | 87,823 |
| Black Sea Countries | 0 | - | 4.87 | 60,822 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,683 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,782 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,444 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,571 |
| Elements by Picture | 0 | - | 4.27 | 70,423 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,564 |
| Islands by Picture | 0 | - | 4.28 | 108,029 |
| Name that Object #1 | 0 | - | 3.57 | 96,657 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,504 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,549 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,653 |
| International Footballers by Picture | 0 | - | 4.51 | 56,893 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 287,614 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 109,795 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,837 |
| Geography by Picture - A | 0 | - | 4.39 | 60,505 |
| Geography by Picture - D | 0 | - | 4.15 | 45,836 |
| Geography by Picture - F | 0 | - | 4.31 | 51,248 |
| Geography by Picture - G | 0 | - | 4.39 | 48,139 |
| Geography by Picture - J | 0 | - | 4.16 | 38,649 |
| Geography by Picture - K | 0 | - | 4.29 | 33,307 |
| Geography by Picture - C | 0 | - | 4.31 | 57,299 |
| Geography by Picture - L | 0 | - | 4.37 | 59,198 |
| Geography by Picture - M | 0 | - | 4.14 | 40,639 |
| Geography by Picture - P | 0 | - | 4.24 | 42,621 |
| Geography by Picture - S | 0 | - | 4.38 | 47,229 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 282,537 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,795 |
| Flag Maths | 0 | - | 4.61 | 57,871 |
| Satellite Images #1 | 0 | - | 4.46 | 130,152 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 110,004 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,500 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,341 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,298 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,729 |
| Soccer Team Logos | 0 | - | 4.26 | 378,833 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,442,779 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 264,501 |
| Video Game Logos Quiz | 0 | - | 4.40 | 185,369 |
| Movie Logos | 0 | - | 4.33 | 240,976 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,412 |
| History by Picture - A | 0 | - | 4.26 | 46,270 |
| History by Picture - B | 0 | - | 4.40 | 49,472 |
| History by Picture - C | 0 | - | 4.33 | 55,016 |
| History by Picture - F | 0 | - | 4.35 | 38,293 |
| History by Picture - G | 0 | - | 4.40 | 42,528 |
| History by Picture - D | 0 | - | 4.29 | 44,767 |
| History by Picture - E | 0 | - | 4.25 | 44,338 |
| History by Picture - H | 0 | - | 4.37 | 37,175 |
| History by Picture - K | 0 | - | 4.35 | 33,696 |
| History by Picture - M | 0 | - | 4.17 | 36,476 |
| History by Picture - N | 0 | - | 4.40 | 41,616 |
| History by Picture - O | 0 | - | 4.40 | 36,629 |
| History by Picture - T | 0 | - | 4.20 | 33,618 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,905 |
| Baby, Male and Female Animals | 0 | - | 4.41 | 151,299 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,659 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,514 |
| Animal Adjectives | 0 | - | 4.77 | 60,251 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,479 |
| Bird in the Answers | 0 | - | 4.11 | 34,047 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,263 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,710 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,110 |
| African Great Lakes | 0 | - | 4.82 | 67,190 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,851 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,094 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 51,047 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,340 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,683 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,158 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,930 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 120,035 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 106,164 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,995 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 49,047 |
| Name that Object #2 | 0 | - | 3.63 | 15,555 |
| Authors by Picture | 0 | - | 4.48 | 25,660 |
| Name that Object #3 | 0 | - | 3.93 | 14,486 |
