| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,187 |
| Name that Bug | 0 | - | 4.12 | 45,514 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,262 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,475 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,483 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,114 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,550 |
| National Football Team Logos | 0 | - | 4.85 | 179,743 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,132 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,729 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,782 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,355 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,246 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,989 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,053 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,100 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,423 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,815 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,273 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 536,478 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,624 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,566 |
| Animals in World History | 0 | - | 4.74 | 44,394 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,926 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,661 |
| Soccer Team Logos | 0 | - | 4.26 | 373,055 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 178,768 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 260,922 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,377 |
| Brand Logos That Start with A | 0 | - | 4.52 | 69,920 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,812 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,764 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,629 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,885 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,368 |
| Empires by Maps | 0 | - | 4.98 | 119,714 |
| Fish by Picture #2 | 0 | - | 4.06 | 18,503 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,099 |
| Flowers by Picture | 0 | - | 4.46 | 105,532 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,438 |
| Airline Logos | 0 | - | 4.45 | 140,407 |
| Fast Food Logos Quiz | 0 | - | 4.44 | 247,805 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,106 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,775 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,555 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,507 |
| All Country Flags of the World | 0 | - | 5.00 | 3,638,780 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 158,540 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,280 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,710 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,234 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,799 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,434 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,326 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,198 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,284 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,155 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 103,682 |
| Play-Doh People from History | 0 | - | 4.99 | 94,441 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,754 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,114 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,295 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,354 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,532,817 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,090,735 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 731,999 |
| Extinct Animals | 0 | - | 4.21 | 27,469 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,236 |
| Animals in the News | 0 | - | 4.37 | 26,766 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 68,871 |
| Megadiverse Countries | 0 | - | 4.96 | 134,676 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,257 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,211 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,047 |
| Flags with Crescents | 0 | - | 4.98 | 168,757 |
| Country Flag Trivia | 0 | - | 4.81 | 56,615 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,209 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,086 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,788 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,962 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,867 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,280 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,500 |
| Real vs. Fake Flags | 0 | - | 4.98 | 123,543 |
| Brand Logos A-Z | 0 | - | 4.23 | 43,011 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,755 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,237 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,732 |
| Old World... or New World? | 0 | - | 4.66 | 21,288 |
| Top Countries for Shark Attacks | 0 | - | 4.46 | 45,772 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,710 |
| Countries with Fjords | 0 | - | 4.93 | 100,667 |
| Years in History by Picture | 0 | - | 4.44 | 35,390 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,636 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,797 |
| NFL Football Team Logos | 0 | - | 4.91 | 625,252 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,233 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,542 |
| Flags to Languages | 0 | - | 4.95 | 173,188 |
| NHL Ice Hockey Team Logos | 0 | - | 4.89 | 186,152 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,297 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,701 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,802 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 20,373 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,753 |
| Fruits by Picture | 0 | - | 4.19 | 806,268 |
| Old Movies by Picture | 0 | - | 4.51 | 25,012 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,892 |
| Name that Object #1 | 0 | - | 3.57 | 96,442 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 336,792 |
| Geography by Picture - B | 0 | - | 4.42 | 55,525 |
| Geography by Picture - H | 0 | - | 4.50 | 58,149 |
| Geography by Picture - N | 0 | - | 4.45 | 42,139 |
| Geography by Picture - R | 0 | - | 4.56 | 40,960 |
| Geography by Picture - T | 0 | - | 4.54 | 57,775 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,785 |
| Random Logos Quiz | 0 | - | 4.31 | 207,903 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 114,441 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,308 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,924 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,826 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,496 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,702 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,288 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,538 |
| Countries With No Rivers | 0 | - | 4.96 | 76,557 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,802 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,939 |
| North Sea Countries | 0 | - | 4.92 | 86,929 |
| Black Sea Countries | 0 | - | 4.87 | 60,531 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,248 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,348 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,122 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,276 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,826 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,575 |
| Elements by Picture | 0 | - | 4.27 | 69,781 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,253 |
| Islands by Picture | 0 | - | 4.29 | 106,547 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,192 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,361 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,059 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,916 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,917 |
| International Footballers by Picture | 0 | - | 4.50 | 55,256 |
| Name that Historical Figure #2 | 0 | - | 4.41 | 283,895 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,303 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,633 |
| Geography by Picture - A | 0 | - | 4.39 | 60,162 |
| Geography by Picture - D | 0 | - | 4.15 | 45,582 |
| Geography by Picture - F | 0 | - | 4.31 | 50,921 |
| Geography by Picture - G | 0 | - | 4.38 | 47,889 |
| Geography by Picture - J | 0 | - | 4.16 | 38,403 |
| Geography by Picture - K | 0 | - | 4.29 | 33,077 |
| Geography by Picture - C | 0 | - | 4.31 | 57,008 |
| Geography by Picture - L | 0 | - | 4.37 | 58,868 |
| Geography by Picture - M | 0 | - | 4.14 | 40,403 |
| Geography by Picture - P | 0 | - | 4.24 | 42,378 |
| Geography by Picture - S | 0 | - | 4.38 | 46,988 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,658 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,133 |
| Flag Maths | 0 | - | 4.64 | 57,730 |
| Satellite Images #1 | 0 | - | 4.46 | 129,232 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,190 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,819 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,821 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,909 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,738 |
| NBA Team Logos | 0 | - | 4.80 | 685,582 |
| MLB Baseball Team Logos | 0 | - | 4.49 | 155,027 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,414,509 |
| Video Game Logos Quiz | 0 | - | 4.40 | 183,485 |
| Movie Logos | 0 | - | 4.33 | 237,464 |
| History by Picture - A | 0 | - | 4.25 | 45,693 |
| History by Picture - B | 0 | - | 4.40 | 48,841 |
| History by Picture - C | 0 | - | 4.36 | 54,361 |
| History by Picture - F | 0 | - | 4.35 | 37,797 |
| History by Picture - G | 0 | - | 4.40 | 42,058 |
| History by Picture - D | 0 | - | 4.29 | 44,221 |
| History by Picture - E | 0 | - | 4.27 | 43,831 |
| History by Picture - H | 0 | - | 4.37 | 36,719 |
| History by Picture - K | 0 | - | 4.35 | 33,286 |
| History by Picture - M | 0 | - | 4.17 | 36,081 |
| History by Picture - N | 0 | - | 4.40 | 41,175 |
| History by Picture - O | 0 | - | 4.39 | 36,233 |
| History by Picture - T | 0 | - | 4.20 | 33,247 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,117 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,137 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,480 |
| Words Containing Animals #2 | 0 | - | 4.07 | 34,415 |
| Animal Adjectives | 0 | - | 4.77 | 59,941 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,215 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 63,899 |
| Bird in the Answers | 0 | - | 4.11 | 33,487 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,148 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,453 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,550 |
| African Great Lakes | 0 | - | 4.82 | 65,851 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,225 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,242 |
