| Animals by Skeleton Image | 0 | - | 4.81 | 47,043 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,985 |
| Animals by Close-up Image | 0 | - | 4.42 | 219,522 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 46,062 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,543 |
| Mammals by Picture #1 | 0 | - | 4.69 | 92,556 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,763 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,879 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,815 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,132 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,956 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,559 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,382 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,624 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,869 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,400 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,772 |
| Animals in World History | 0 | - | 4.74 | 44,708 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,939 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,749 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,275 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,834 |
| Former Countries by Territory Map | 0 | - | 4.96 | 104,199 |
| Empires by Maps | 0 | - | 4.98 | 122,521 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,622 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 107,534 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,224 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,111 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,849 |
| Fish by Picture #2 | 0 | - | 4.09 | 18,770 |
| Flowers by Picture | 0 | - | 4.46 | 105,890 |
| Birds by Picture #1 | 0 | - | 4.47 | 42,133 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,737 |
| North American Bird-Named Teams | 0 | - | 4.44 | 68,033 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,684 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,596 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,661 |
| Play-Doh People from History | 0 | - | 4.99 | 95,751 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,737 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 50,118 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 50,176 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,277 |
| All Country Flags of the World | 0 | - | 5.00 | 3,724,099 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,360 |
| Extinct Animals | 0 | - | 4.13 | 27,592 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,510 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,323 |
| Animals in the News | 0 | - | 4.37 | 26,845 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,618 |
| Megadiverse Countries | 0 | - | 4.96 | 148,939 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,547,699 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,098,184 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 737,099 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,323 |
| Where Are These Doors? | 0 | - | 4.45 | 30,267 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,785 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,538 |
| Name the Cat Flags | 0 | - | 5.00 | 40,657 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,543 |
| Old World... or New World? | 0 | - | 4.66 | 21,483 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 19,053 |
| Years in History by Picture | 0 | - | 4.45 | 35,933 |
| Make a Stained Glass Window | 0 | - | 5.00 | 69,192 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,804 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,541 |
| Flags with Crescents | 0 | - | 4.98 | 171,722 |
| Country Flag Trivia | 0 | - | 4.82 | 58,287 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 105,158 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,622 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,870 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 68,115 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 86,157 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 61,183 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,623 |
| Real vs. Fake Flags | 0 | - | 4.98 | 126,059 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 184,812 |
| National Football Team Logos | 0 | - | 4.85 | 182,221 |
| Merged Company Logos #2 | 0 | - | 4.75 | 78,428 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,326 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,828 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,962 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,239 |
| Countries with Fjords | 0 | - | 4.94 | 101,584 |
| Name that Object #1 | 0 | - | 3.57 | 96,650 |
| Flags to Languages | 0 | - | 4.95 | 174,684 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,911 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 51,140 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,861 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,305 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,848 |
| Fruits by Picture | 0 | - | 4.19 | 809,801 |
| Old Movies by Picture | 0 | - | 4.51 | 25,293 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,346 |
| Geography by Picture - B | 0 | - | 4.42 | 55,830 |
| Geography by Picture - H | 0 | - | 4.50 | 58,427 |
| Geography by Picture - N | 0 | - | 4.45 | 42,394 |
| Geography by Picture - R | 0 | - | 4.56 | 41,188 |
| Geography by Picture - T | 0 | - | 4.54 | 58,042 |
| Random Logos Quiz | 0 | - | 4.33 | 209,906 |
| All North American Pro Sports Logos | 0 | - | 4.72 | 116,626 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,689 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,320 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,307 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,846 |
| Pictures by Letter - M | 0 | - | 4.24 | 38,056 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,865 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 341,015 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,642 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 545,084 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,358 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,900 |
| Countries With No Rivers | 0 | - | 4.96 | 77,254 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,135 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,224 |
| North Sea Countries | 0 | - | 4.92 | 87,784 |
| Black Sea Countries | 0 | - | 4.87 | 60,798 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,659 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,747 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,393 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,425 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,549 |
| Elements by Picture | 0 | - | 4.27 | 70,389 |
| Name that Object #2 | 0 | - | 3.63 | 15,546 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,547 |
| Islands by Picture | 0 | - | 4.28 | 107,953 |
| Name that Object #3 | 0 | - | 3.93 | 14,478 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,483 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,618 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,812 |
| International Footballers by Picture | 0 | - | 4.51 | 56,580 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 287,384 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 109,657 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,771 |
| Geography by Picture - A | 0 | - | 4.39 | 60,483 |
| Geography by Picture - D | 0 | - | 4.15 | 45,824 |
| Geography by Picture - F | 0 | - | 4.31 | 51,228 |
| Geography by Picture - G | 0 | - | 4.39 | 48,120 |
| Geography by Picture - J | 0 | - | 4.16 | 38,632 |
| Geography by Picture - K | 0 | - | 4.29 | 33,290 |
| Geography by Picture - C | 0 | - | 4.31 | 57,279 |
| Geography by Picture - L | 0 | - | 4.37 | 59,173 |
| Geography by Picture - M | 0 | - | 4.14 | 40,616 |
| Geography by Picture - P | 0 | - | 4.24 | 42,600 |
| Geography by Picture - S | 0 | - | 4.38 | 47,211 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 282,385 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,654 |
| Flag Maths | 0 | - | 4.61 | 57,864 |
| Satellite Images #1 | 0 | - | 4.46 | 130,073 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 109,766 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,446 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,293 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,254 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,662 |
| Soccer Team Logos | 0 | - | 4.26 | 378,232 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,441,303 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 264,277 |
| Video Game Logos Quiz | 0 | - | 4.40 | 185,244 |
| Movie Logos | 0 | - | 4.33 | 240,776 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,338 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,685 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,422 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,800 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,307 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,624 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,483 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,959 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,322 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,615 |
| Pictures by Letter - N | 0 | - | 4.12 | 24,690 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,235 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,961 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,899 |
| History by Picture - A | 0 | - | 4.26 | 46,224 |
| History by Picture - B | 0 | - | 4.40 | 49,424 |
| History by Picture - C | 0 | - | 4.33 | 54,963 |
| History by Picture - F | 0 | - | 4.35 | 38,258 |
| History by Picture - G | 0 | - | 4.40 | 42,496 |
| History by Picture - D | 0 | - | 4.29 | 44,721 |
| History by Picture - E | 0 | - | 4.25 | 44,304 |
| History by Picture - H | 0 | - | 4.37 | 37,143 |
| History by Picture - K | 0 | - | 4.35 | 33,670 |
| History by Picture - M | 0 | - | 4.17 | 36,447 |
| History by Picture - N | 0 | - | 4.40 | 41,585 |
| History by Picture - O | 0 | - | 4.39 | 36,597 |
| History by Picture - T | 0 | - | 4.20 | 33,593 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,866 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 151,234 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,649 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,511 |
| Animal Adjectives | 0 | - | 4.77 | 60,242 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,435 |
| Bird in the Answers | 0 | - | 4.11 | 34,022 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,255 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,695 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,070 |
| African Great Lakes | 0 | - | 4.82 | 67,111 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,092 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,891 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,971 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 106,104 |
