| Animals by Skeleton Image | 0 | - | 4.81 | 46,443 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,366 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,780 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,615 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,211 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,762 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,752 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,129 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,151 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,514 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,409 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,094 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,114 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,212 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,525 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,295 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,199 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,751 |
| Animals in World History | 0 | - | 4.74 | 44,469 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,004 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,449 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,699 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,722 |
| Empires by Maps | 0 | - | 4.98 | 120,294 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,417 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,953 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,856 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,671 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 106,389 |
| Fish by Picture #2 | 0 | - | 4.07 | 18,559 |
| Flowers by Picture | 0 | - | 4.46 | 105,623 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,597 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,270 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,854 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,580 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,240 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,184 |
| Play-Doh People from History | 0 | - | 4.99 | 94,723 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,978 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,324 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,483 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,542 |
| All Country Flags of the World | 0 | - | 5.00 | 3,657,900 |
| Extinct Animals | 0 | - | 4.16 | 27,501 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,364 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,258 |
| Animals in the News | 0 | - | 4.37 | 26,787 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,302 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,307 |
| Megadiverse Countries | 0 | - | 4.96 | 134,828 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,536,162 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,373 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,100 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 68,994 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,342 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,162 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,812 |
| Old World... or New World? | 0 | - | 4.66 | 21,327 |
| Years in History by Picture | 0 | - | 4.44 | 35,483 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,462 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,852 |
| Flags with Crescents | 0 | - | 4.98 | 169,370 |
| Country Flag Trivia | 0 | - | 4.81 | 56,944 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,641 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,414 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,269 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,213 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,161 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,457 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,735 |
| Real vs. Fake Flags | 0 | - | 4.98 | 124,084 |
| National Football Team Logos | 0 | - | 4.85 | 180,219 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,499 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,264 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,752 |
| Top Countries for Shark Attacks | 0 | - | 4.46 | 45,810 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,791 |
| Countries with Fjords | 0 | - | 4.94 | 100,847 |
| Name that Object #1 | 0 | - | 3.57 | 96,491 |
| Flags to Languages | 0 | - | 4.95 | 173,547 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,817 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,487 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,912 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,131 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,125 |
| Fruits by Picture | 0 | - | 4.19 | 807,072 |
| Old Movies by Picture | 0 | - | 4.51 | 25,083 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,995 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,593 |
| Geography by Picture - B | 0 | - | 4.42 | 55,590 |
| Geography by Picture - H | 0 | - | 4.50 | 58,214 |
| Geography by Picture - N | 0 | - | 4.45 | 42,195 |
| Geography by Picture - R | 0 | - | 4.56 | 41,016 |
| Geography by Picture - T | 0 | - | 4.54 | 57,830 |
| Random Logos Quiz | 0 | - | 4.31 | 208,325 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 114,960 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,407 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,024 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,954 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,577 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,792 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,015 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,376 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 62,965 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 538,528 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,295 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,642 |
| Countries With No Rivers | 0 | - | 4.96 | 76,756 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,055 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,004 |
| North Sea Countries | 0 | - | 4.92 | 87,358 |
| Black Sea Countries | 0 | - | 4.87 | 60,589 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,351 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,450 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,210 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,344 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,940 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,675 |
| Elements by Picture | 0 | - | 4.27 | 69,909 |
| Name that Object #2 | 0 | - | 3.64 | 15,442 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,306 |
| Islands by Picture | 0 | - | 4.29 | 106,870 |
| Name that Object #3 | 0 | - | 3.93 | 14,396 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,255 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,733 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,176 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,132 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,004 |
| International Footballers by Picture | 0 | - | 4.50 | 55,558 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,413 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,580 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,776 |
| Geography by Picture - A | 0 | - | 4.39 | 60,237 |
| Geography by Picture - D | 0 | - | 4.15 | 45,649 |
| Geography by Picture - F | 0 | - | 4.31 | 50,987 |
| Geography by Picture - G | 0 | - | 4.38 | 47,939 |
| Geography by Picture - J | 0 | - | 4.16 | 38,458 |
| Geography by Picture - K | 0 | - | 4.29 | 33,121 |
| Geography by Picture - C | 0 | - | 4.31 | 57,059 |
| Geography by Picture - L | 0 | - | 4.37 | 58,945 |
| Geography by Picture - M | 0 | - | 4.14 | 40,450 |
| Geography by Picture - P | 0 | - | 4.24 | 42,430 |
| Geography by Picture - S | 0 | - | 4.38 | 47,035 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,257 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,459 |
| Flag Maths | 0 | - | 4.64 | 57,756 |
| Satellite Images #1 | 0 | - | 4.47 | 129,340 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,278 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,896 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,901 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,966 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,947 |
| Soccer Team Logos | 0 | - | 4.26 | 374,213 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,421,180 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 180,161 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 261,725 |
| Video Game Logos Quiz | 0 | - | 4.40 | 183,892 |
| Movie Logos | 0 | - | 4.33 | 238,285 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,753 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,231 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,488 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,161 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,562 |
| Pictures by Letter - F | 0 | - | 4.17 | 29,043 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,457 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,300 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,767 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,122 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,384 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,495 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,052 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,783 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,679 |
| History by Picture - A | 0 | - | 4.26 | 45,794 |
| History by Picture - B | 0 | - | 4.40 | 48,951 |
| History by Picture - C | 0 | - | 4.36 | 54,479 |
| History by Picture - F | 0 | - | 4.35 | 37,888 |
| History by Picture - G | 0 | - | 4.40 | 42,147 |
| History by Picture - D | 0 | - | 4.29 | 44,314 |
| History by Picture - E | 0 | - | 4.25 | 43,936 |
| History by Picture - H | 0 | - | 4.37 | 36,800 |
| History by Picture - K | 0 | - | 4.35 | 33,361 |
| History by Picture - M | 0 | - | 4.17 | 36,149 |
| History by Picture - N | 0 | - | 4.40 | 41,263 |
| History by Picture - O | 0 | - | 4.39 | 36,318 |
| History by Picture - T | 0 | - | 4.20 | 33,314 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,258 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,378 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,511 |
| Words Containing Animals #2 | 0 | - | 4.07 | 34,440 |
| Animal Adjectives | 0 | - | 4.77 | 59,989 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,265 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,044 |
| Bird in the Answers | 0 | - | 4.11 | 33,663 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,175 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,501 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,661 |
| African Great Lakes | 0 | - | 4.82 | 66,159 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,441 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,410 |
