| Animals by Skeleton Image | 0 | - | 4.81 | 46,665 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,594 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,569 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,785 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,333 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,033 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,979 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,297 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,310 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,645 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,612 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,284 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,209 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,358 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,638 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,319 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,391 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,795 |
| Animals in World History | 0 | - | 4.74 | 44,577 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,263 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,664 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,751 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,119 |
| Empires by Maps | 0 | - | 4.98 | 120,964 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,800 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,036 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,937 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,735 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,311 |
| Fish by Picture #2 | 0 | - | 4.07 | 18,619 |
| Flowers by Picture | 0 | - | 4.46 | 105,731 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,813 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,457 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,922 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,618 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,348 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,711 |
| Play-Doh People from History | 0 | - | 4.99 | 95,065 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,247 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,569 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,700 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,756 |
| All Country Flags of the World | 0 | - | 5.00 | 3,680,696 |
| Extinct Animals | 0 | - | 4.16 | 27,529 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,419 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,276 |
| Animals in the News | 0 | - | 4.37 | 26,805 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,416 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,325 |
| Megadiverse Countries | 0 | - | 4.96 | 135,030 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,157 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,351 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,437 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,105 |
| Where Are These Doors? | 0 | - | 4.45 | 30,080 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,508 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,318 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,898 |
| Old World... or New World? | 0 | - | 4.66 | 21,378 |
| Years in History by Picture | 0 | - | 4.44 | 35,609 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,693 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,675 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,097 |
| Flags with Crescents | 0 | - | 4.98 | 170,125 |
| Country Flag Trivia | 0 | - | 4.81 | 57,368 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,149 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,819 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,805 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,500 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,491 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,690 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,055 |
| Real vs. Fake Flags | 0 | - | 4.98 | 124,737 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 181,839 |
| National Football Team Logos | 0 | - | 4.85 | 180,865 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,778 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,282 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,773 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,859 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,903 |
| Countries with Fjords | 0 | - | 4.94 | 101,052 |
| Name that Object #1 | 0 | - | 3.57 | 96,536 |
| Flags to Languages | 0 | - | 4.95 | 173,927 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,842 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,703 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,024 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,367 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,438 |
| Fruits by Picture | 0 | - | 4.19 | 808,001 |
| Old Movies by Picture | 0 | - | 4.51 | 25,151 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,134 |
| Geography by Picture - B | 0 | - | 4.42 | 55,677 |
| Geography by Picture - H | 0 | - | 4.50 | 58,282 |
| Geography by Picture - N | 0 | - | 4.45 | 42,252 |
| Geography by Picture - R | 0 | - | 4.56 | 41,072 |
| Geography by Picture - T | 0 | - | 4.54 | 57,902 |
| Random Logos Quiz | 0 | - | 4.33 | 208,806 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,586 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,513 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,136 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,086 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,683 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,880 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,330 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,155 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 63,171 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 540,968 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,315 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,734 |
| Countries With No Rivers | 0 | - | 4.96 | 76,922 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,289 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,076 |
| North Sea Countries | 0 | - | 4.92 | 87,497 |
| Black Sea Countries | 0 | - | 4.87 | 60,652 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,454 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,549 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,281 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,420 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,054 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,775 |
| Elements by Picture | 0 | - | 4.27 | 70,082 |
| Name that Object #2 | 0 | - | 3.64 | 15,470 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,386 |
| Islands by Picture | 0 | - | 4.28 | 107,261 |
| Name that Object #3 | 0 | - | 3.93 | 14,425 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,314 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,120 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,358 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,359 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,090 |
| International Footballers by Picture | 0 | - | 4.50 | 55,901 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,088 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,010 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,961 |
| Geography by Picture - A | 0 | - | 4.39 | 60,327 |
| Geography by Picture - D | 0 | - | 4.15 | 45,711 |
| Geography by Picture - F | 0 | - | 4.31 | 51,072 |
| Geography by Picture - G | 0 | - | 4.39 | 48,002 |
| Geography by Picture - J | 0 | - | 4.16 | 38,515 |
| Geography by Picture - K | 0 | - | 4.29 | 33,175 |
| Geography by Picture - C | 0 | - | 4.31 | 57,131 |
| Geography by Picture - L | 0 | - | 4.37 | 59,040 |
| Geography by Picture - M | 0 | - | 4.14 | 40,507 |
| Geography by Picture - P | 0 | - | 4.24 | 42,481 |
| Geography by Picture - S | 0 | - | 4.38 | 47,089 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,011 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,848 |
| Flag Maths | 0 | - | 4.64 | 57,792 |
| Satellite Images #1 | 0 | - | 4.47 | 129,491 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,405 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,994 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,011 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,045 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,186 |
| Soccer Team Logos | 0 | - | 4.26 | 375,663 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,428,832 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 262,673 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,379 |
| Movie Logos | 0 | - | 4.33 | 239,159 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,674 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,556 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,254 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,645 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,136 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,520 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,370 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,840 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,197 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,461 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,564 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,121 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,841 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,757 |
| History by Picture - A | 0 | - | 4.26 | 45,938 |
| History by Picture - B | 0 | - | 4.40 | 49,123 |
| History by Picture - C | 0 | - | 4.36 | 54,640 |
| History by Picture - F | 0 | - | 4.35 | 38,003 |
| History by Picture - G | 0 | - | 4.40 | 42,254 |
| History by Picture - D | 0 | - | 4.29 | 44,442 |
| History by Picture - E | 0 | - | 4.25 | 44,057 |
| History by Picture - H | 0 | - | 4.37 | 36,900 |
| History by Picture - K | 0 | - | 4.35 | 33,456 |
| History by Picture - M | 0 | - | 4.17 | 36,235 |
| History by Picture - N | 0 | - | 4.40 | 41,362 |
| History by Picture - O | 0 | - | 4.39 | 36,401 |
| History by Picture - T | 0 | - | 4.20 | 33,395 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,419 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,702 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,563 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,466 |
| Animal Adjectives | 0 | - | 4.77 | 60,075 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,339 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,198 |
| Bird in the Answers | 0 | - | 4.11 | 33,811 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,207 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,543 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,811 |
| African Great Lakes | 0 | - | 4.82 | 66,519 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,657 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,579 |
