| Animals by Skeleton Image | 0 | - | 4.81 | 46,976 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,901 |
| Animals by Close-up Image | 0 | - | 4.42 | 219,105 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 46,031 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,500 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,486 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,502 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,646 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,616 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,077 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,887 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,522 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,361 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,583 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,829 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,387 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,680 |
| Animals in World History | 0 | - | 4.74 | 44,685 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,889 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,645 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,173 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,827 |
| Former Countries by Territory Map | 0 | - | 4.96 | 104,020 |
| Empires by Maps | 0 | - | 4.98 | 122,244 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,485 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,185 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,071 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,832 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,506 |
| Fish by Picture #2 | 0 | - | 4.09 | 18,747 |
| Flowers by Picture | 0 | - | 4.46 | 105,874 |
| Birds by Picture #1 | 0 | - | 4.47 | 42,077 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,682 |
| North American Bird-Named Teams | 0 | - | 4.44 | 68,008 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,672 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,557 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,421 |
| Play-Doh People from History | 0 | - | 4.99 | 95,626 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,652 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 50,046 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 50,103 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,157 |
| All Country Flags of the World | 0 | - | 5.00 | 3,717,118 |
| Extinct Animals | 0 | - | 4.13 | 27,584 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,494 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,313 |
| Animals in the News | 0 | - | 4.37 | 26,841 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,586 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,353 |
| Megadiverse Countries | 0 | - | 4.96 | 138,931 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,508 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,499 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,646 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,280 |
| Where Are These Doors? | 0 | - | 4.45 | 30,241 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,741 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,502 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,508 |
| Old World... or New World? | 0 | - | 4.66 | 21,470 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 19,024 |
| Years in History by Picture | 0 | - | 4.45 | 35,863 |
| Make a Stained Glass Window | 0 | - | 5.00 | 69,112 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,787 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,465 |
| Flags with Crescents | 0 | - | 4.98 | 171,458 |
| Country Flag Trivia | 0 | - | 4.82 | 58,127 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,974 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,498 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,686 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,999 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 86,043 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 61,073 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,529 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,864 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 184,315 |
| National Football Team Logos | 0 | - | 4.85 | 181,990 |
| Merged Company Logos #2 | 0 | - | 4.75 | 78,349 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,323 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,821 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,951 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,103 |
| Countries with Fjords | 0 | - | 4.94 | 101,395 |
| Name that Object #1 | 0 | - | 3.57 | 96,642 |
| Flags to Languages | 0 | - | 4.95 | 174,568 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,899 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 51,062 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,757 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,232 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,802 |
| Fruits by Picture | 0 | - | 4.19 | 809,540 |
| Old Movies by Picture | 0 | - | 4.51 | 25,278 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,321 |
| Geography by Picture - B | 0 | - | 4.42 | 55,790 |
| Geography by Picture - H | 0 | - | 4.50 | 58,396 |
| Geography by Picture - N | 0 | - | 4.45 | 42,356 |
| Geography by Picture - R | 0 | - | 4.56 | 41,159 |
| Geography by Picture - T | 0 | - | 4.54 | 58,013 |
| Random Logos Quiz | 0 | - | 4.33 | 209,746 |
| All North American Pro Sports Logos | 0 | - | 4.72 | 116,476 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,666 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,294 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,280 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,820 |
| Pictures by Letter - M | 0 | - | 4.24 | 38,028 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 340,126 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,499 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 544,424 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,784 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,357 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,871 |
| Countries With No Rivers | 0 | - | 4.96 | 77,175 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,056 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,188 |
| North Sea Countries | 0 | - | 4.92 | 87,723 |
| Black Sea Countries | 0 | - | 4.87 | 60,761 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,605 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,700 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,384 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,524 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,292 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,992 |
| Elements by Picture | 0 | - | 4.27 | 70,336 |
| Name that Object #2 | 0 | - | 3.63 | 15,534 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,520 |
| Islands by Picture | 0 | - | 4.28 | 107,841 |
| Name that Object #3 | 0 | - | 3.93 | 14,473 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,463 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,719 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,576 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,694 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,228 |
| International Footballers by Picture | 0 | - | 4.51 | 56,478 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 286,618 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 109,061 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,456 |
| Geography by Picture - A | 0 | - | 4.39 | 60,447 |
| Geography by Picture - D | 0 | - | 4.15 | 45,795 |
| Geography by Picture - F | 0 | - | 4.31 | 51,194 |
| Geography by Picture - G | 0 | - | 4.39 | 48,089 |
| Geography by Picture - J | 0 | - | 4.16 | 38,608 |
| Geography by Picture - K | 0 | - | 4.29 | 33,259 |
| Geography by Picture - C | 0 | - | 4.31 | 57,247 |
| Geography by Picture - L | 0 | - | 4.37 | 59,150 |
| Geography by Picture - M | 0 | - | 4.14 | 40,594 |
| Geography by Picture - P | 0 | - | 4.24 | 42,578 |
| Geography by Picture - S | 0 | - | 4.38 | 47,191 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 282,178 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,497 |
| Flag Maths | 0 | - | 4.61 | 57,854 |
| Satellite Images #1 | 0 | - | 4.46 | 130,020 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,716 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,414 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,262 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,238 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,606 |
| Soccer Team Logos | 0 | - | 4.26 | 377,849 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,439,376 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 264,028 |
| Video Game Logos Quiz | 0 | - | 4.40 | 185,138 |
| Movie Logos | 0 | - | 4.33 | 240,531 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,233 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,669 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,401 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,782 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,283 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,610 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,465 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,946 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,306 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,593 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,672 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,218 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,945 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,876 |
| History by Picture - A | 0 | - | 4.26 | 46,176 |
| History by Picture - B | 0 | - | 4.40 | 49,374 |
| History by Picture - C | 0 | - | 4.33 | 54,909 |
| History by Picture - F | 0 | - | 4.35 | 38,215 |
| History by Picture - G | 0 | - | 4.40 | 42,459 |
| History by Picture - D | 0 | - | 4.29 | 44,678 |
| History by Picture - E | 0 | - | 4.25 | 44,259 |
| History by Picture - H | 0 | - | 4.37 | 37,106 |
| History by Picture - K | 0 | - | 4.35 | 33,639 |
| History by Picture - M | 0 | - | 4.17 | 36,416 |
| History by Picture - N | 0 | - | 4.40 | 41,551 |
| History by Picture - O | 0 | - | 4.39 | 36,571 |
| History by Picture - T | 0 | - | 4.20 | 33,561 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,819 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 151,144 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,629 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,498 |
| Animal Adjectives | 0 | - | 4.77 | 60,212 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,393 |
| Bird in the Answers | 0 | - | 4.11 | 33,977 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,246 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,647 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,022 |
| African Great Lakes | 0 | - | 4.82 | 67,008 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,013 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,834 |
