| Animals by Skeleton Image | 0 | - | 4.81 | 46,825 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,975 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,763 |
| Name that Bug | 0 | - | 4.12 | 45,614 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,864 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,927 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,429 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,289 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,151 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,440 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,450 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,764 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,429 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,277 |
| Fish by Picture #2 | 0 | - | 4.09 | 18,714 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,476 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,545 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,753 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,357 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,456 |
| Animals in World History | 0 | - | 4.74 | 44,635 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,007 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,911 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,841 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,792 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,112 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,010 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,783 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,433 |
| Flowers by Picture | 0 | - | 4.46 | 105,820 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,487 |
| Empires by Maps | 0 | - | 4.98 | 121,496 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,959 |
| Airline Logos | 0 | - | 4.45 | 141,269 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,056 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,582 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,974 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,650 |
| Name the Cat Flags | 0 | - | 5.00 | 40,507 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,451 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,105 |
| Play-Doh People from History | 0 | - | 4.99 | 95,352 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,443 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,856 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,934 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,953 |
| All Country Flags of the World | 0 | - | 5.00 | 3,701,022 |
| Extinct Animals | 0 | - | 4.16 | 27,559 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,460 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,291 |
| Animals in the News | 0 | - | 4.37 | 26,827 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,516 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,201 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,344 |
| Megadiverse Countries | 0 | - | 4.96 | 135,180 |
| Brand Logos A-Z | 0 | - | 4.23 | 43,682 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,738 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,626 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,419 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,573 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,056 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,668 |
| Old World... or New World? | 0 | - | 4.66 | 21,411 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,671 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,966 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,912 |
| Flags with Crescents | 0 | - | 4.98 | 170,976 |
| Country Flag Trivia | 0 | - | 4.81 | 57,784 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,625 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,198 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,294 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,753 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,789 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,891 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,337 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,420 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,876 |
| NFL Football Team Logos | 0 | - | 4.91 | 631,132 |
| NBA Team Logos | 0 | - | 4.81 | 695,447 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 183,192 |
| National Football Team Logos | 0 | - | 4.85 | 181,383 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,304 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,793 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,430 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,992 |
| Countries with Fjords | 0 | - | 4.94 | 101,216 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,908 |
| Years in History by Picture | 0 | - | 4.44 | 35,703 |
| Where Are These Doors? | 0 | - | 4.45 | 30,158 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,288 |
| Flags to Languages | 0 | - | 4.95 | 174,300 |
| NHL Ice Hockey Team Logos | 0 | - | 4.89 | 189,649 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,970 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,589 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,152 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,651 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,596 |
| Fruits by Picture | 0 | - | 4.19 | 808,715 |
| Old Movies by Picture | 0 | - | 4.51 | 25,214 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,255 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,539 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,824 |
| Geography by Picture - B | 0 | - | 4.42 | 55,743 |
| Geography by Picture - H | 0 | - | 4.50 | 58,341 |
| Geography by Picture - N | 0 | - | 4.45 | 42,314 |
| Geography by Picture - R | 0 | - | 4.56 | 41,119 |
| Geography by Picture - T | 0 | - | 4.54 | 57,962 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,336 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 542,854 |
| Random Logos Quiz | 0 | - | 4.33 | 209,139 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 116,026 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,591 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,229 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,199 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,759 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,957 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,334 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,814 |
| Countries With No Rivers | 0 | - | 4.96 | 77,062 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,800 |
| Rivers in History | 0 | - | 4.92 | 33,423 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,135 |
| North Sea Countries | 0 | - | 4.92 | 87,626 |
| Black Sea Countries | 0 | - | 4.87 | 60,708 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,528 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,631 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,340 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,474 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,196 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,912 |
| Elements by Picture | 0 | - | 4.27 | 70,224 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,471 |
| Islands by Picture | 0 | - | 4.28 | 107,581 |
| Name that Object #1 | 0 | - | 3.57 | 96,573 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,419 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,071 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,497 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,468 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,162 |
| International Footballers by Picture | 0 | - | 4.51 | 56,221 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,663 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,334 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,098 |
| Geography by Picture - A | 0 | - | 4.39 | 60,395 |
| Geography by Picture - D | 0 | - | 4.15 | 45,760 |
| Geography by Picture - F | 0 | - | 4.31 | 51,137 |
| Geography by Picture - G | 0 | - | 4.39 | 48,051 |
| Geography by Picture - J | 0 | - | 4.16 | 38,566 |
| Geography by Picture - K | 0 | - | 4.29 | 33,223 |
| Geography by Picture - C | 0 | - | 4.31 | 57,198 |
| Geography by Picture - L | 0 | - | 4.37 | 59,097 |
| Geography by Picture - M | 0 | - | 4.14 | 40,554 |
| Geography by Picture - P | 0 | - | 4.24 | 42,535 |
| Geography by Picture - S | 0 | - | 4.38 | 47,152 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,694 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,222 |
| Flag Maths | 0 | - | 4.61 | 57,816 |
| Satellite Images #1 | 0 | - | 4.47 | 129,621 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,504 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,093 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,118 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,116 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,453 |
| Soccer Team Logos | 0 | - | 4.26 | 376,790 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,434,422 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,382 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,756 |
| Movie Logos | 0 | - | 4.33 | 239,873 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,962 |
| History by Picture - A | 0 | - | 4.26 | 46,063 |
| History by Picture - B | 0 | - | 4.40 | 49,241 |
| History by Picture - C | 0 | - | 4.36 | 54,772 |
| History by Picture - F | 0 | - | 4.35 | 38,112 |
| History by Picture - G | 0 | - | 4.40 | 42,349 |
| History by Picture - D | 0 | - | 4.29 | 44,565 |
| History by Picture - E | 0 | - | 4.25 | 44,149 |
| History by Picture - H | 0 | - | 4.37 | 37,000 |
| History by Picture - K | 0 | - | 4.35 | 33,537 |
| History by Picture - M | 0 | - | 4.17 | 36,322 |
| History by Picture - N | 0 | - | 4.40 | 41,462 |
| History by Picture - O | 0 | - | 4.39 | 36,488 |
| History by Picture - T | 0 | - | 4.20 | 33,482 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,576 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,945 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,599 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,486 |
| Animal Adjectives | 0 | - | 4.77 | 60,160 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,301 |
| Bird in the Answers | 0 | - | 4.11 | 33,907 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,228 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,596 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,924 |
| African Great Lakes | 0 | - | 4.82 | 66,805 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,703 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,802 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,875 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,210 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,556 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,847 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,702 |
