| Elements by Picture | 0 | - | 4.27 | 69,494 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,344 |
| Empires by Maps | 0 | - | 4.98 | 118,209 |
| Animals by Skeleton Image | 0 | - | 4.80 | 45,926 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,313 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,105 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,955 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,620 |
| Play-Doh People from History | 0 | - | 4.99 | 93,717 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,228 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,669 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 48,817 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 60,962 |
| All Country Flags of the World | 0 | - | 5.00 | 3,595,409 |
| Metals of Antiquity | 0 | - | 4.94 | 92,822 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,524,869 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,737 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,194 |
| Years in History by Picture | 0 | - | 4.44 | 35,060 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,727 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,138 |
| Flags with Crescents | 0 | - | 4.98 | 167,325 |
| Country Flag Trivia | 0 | - | 4.81 | 55,803 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,264 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,358 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,756 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,362 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,289 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 51,949 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,372 |
| National Football Team Logos | 0 | - | 4.84 | 178,438 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,659 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,523 |
| Name that Object #1 | 0 | - | 3.56 | 96,275 |
| Flags to Languages | 0 | - | 4.95 | 172,360 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 50,138 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,341 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,191 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,558 |
| Countries with Glaciers | 0 | - | 4.97 | 104,604 |
| Fruits by Picture | 0 | - | 4.20 | 804,359 |
| Old Movies by Picture | 0 | - | 4.51 | 24,763 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,633 |
| Geography by Picture - B | 0 | - | 4.42 | 55,388 |
| Geography by Picture - H | 0 | - | 4.49 | 58,019 |
| Geography by Picture - N | 0 | - | 4.45 | 42,035 |
| Geography by Picture - R | 0 | - | 4.55 | 40,867 |
| Geography by Picture - T | 0 | - | 4.54 | 57,653 |
| Random Logos Quiz | 0 | - | 4.32 | 206,878 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,019 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,090 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,687 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,575 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,275 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,497 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,995 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,179 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,771 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,263 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,368 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 531,232 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,555 |
| Name that Bug | 0 | - | 4.12 | 45,437 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,169 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,586 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,373 |
| Name that Object #2 | 0 | - | 3.64 | 15,307 |
| Islands by Picture | 0 | - | 4.29 | 105,782 |
| Name that Object #3 | 0 | - | 3.93 | 14,292 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,009 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,366 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,794 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,499 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,189 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,884 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,046 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,736 |
| International Footballers by Picture | 0 | - | 4.50 | 54,596 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,364 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,503 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,243 |
| Geography by Picture - A | 0 | - | 4.39 | 60,026 |
| Geography by Picture - D | 0 | - | 4.15 | 45,468 |
| Geography by Picture - F | 0 | - | 4.31 | 50,810 |
| Geography by Picture - G | 0 | - | 4.38 | 47,774 |
| Geography by Picture - J | 0 | - | 4.16 | 38,316 |
| Geography by Picture - K | 0 | - | 4.28 | 32,996 |
| Geography by Picture - C | 0 | - | 4.31 | 56,893 |
| Geography by Picture - L | 0 | - | 4.37 | 58,732 |
| Geography by Picture - M | 0 | - | 4.14 | 40,330 |
| Geography by Picture - P | 0 | - | 4.24 | 42,286 |
| Geography by Picture - S | 0 | - | 4.38 | 46,896 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,117 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,337 |
| Flag Maths | 0 | - | 4.78 | 57,665 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 128,965 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,956 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,618 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,621 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,779 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,290 |
| Soccer Team Logos | 0 | - | 4.26 | 370,302 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,399,358 |
| Ultimate Car Logos Quiz | 0 | - | 4.79 | 175,744 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 258,929 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,488 |
| Movie Logos | 0 | - | 4.33 | 235,538 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,659 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,097 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,144 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,257 |
| Pictures by Letter - G | 0 | - | 4.14 | 27,887 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,302 |
| Pictures by Letter - F | 0 | - | 4.17 | 28,775 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,279 |
| Pictures by Letter - Y | 0 | - | 4.22 | 26,090 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,559 |
| Pictures by Letter - K | 0 | - | 4.18 | 24,900 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,155 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,303 |
| Pictures by Letter - P | 0 | - | 4.05 | 25,840 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,589 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,450 |
| History by Picture - A | 0 | - | 4.25 | 45,420 |
| History by Picture - B | 0 | - | 4.40 | 48,535 |
| History by Picture - C | 0 | - | 4.36 | 54,038 |
| History by Picture - F | 0 | - | 4.35 | 37,546 |
| History by Picture - G | 0 | - | 4.40 | 41,804 |
| History by Picture - D | 0 | - | 4.32 | 43,968 |
| History by Picture - E | 0 | - | 4.27 | 43,587 |
| History by Picture - H | 0 | - | 4.37 | 36,498 |
| History by Picture - K | 0 | - | 4.35 | 33,074 |
| History by Picture - M | 0 | - | 4.17 | 35,879 |
| History by Picture - N | 0 | - | 4.40 | 40,961 |
| History by Picture - O | 0 | - | 4.39 | 35,996 |
| History by Picture - T | 0 | - | 4.20 | 33,057 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,788 |
| Animals - Taxonomy to Common Name | 0 | - | 4.79 | 28,078 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,296 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,822 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,332 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,398 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,564 |
| Musical Instruments by Picture #1 | 0 | - | 4.53 | 267,793 |
| Flowers by Picture | 0 | - | 4.46 | 104,984 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,512 |
| Authors by Picture | 0 | - | 4.48 | 25,387 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,360 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,427 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 54,979 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,282 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,350 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,038 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,844 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,730 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,871 |
| Birds by Picture #1 | 0 | - | 4.46 | 41,054 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,810 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,359 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 69,972 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,081 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,897 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,189 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 78,934 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,877 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,493 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,897 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,482 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 157,903 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,327 |
| Musicians by Picture #1 | 0 | - | 4.39 | 106,942 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,167 |
| Musicians by Picture #4 | 0 | - | 4.07 | 63,938 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,257 |
| Emoji Flags | 0 | - | 4.35 | 43,792 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,430 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,045 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,215 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,687 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,031 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,657 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 392,816 |
| Airline Logos | 0 | - | 4.45 | 139,874 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 246,770 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 157,670 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,590 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,569 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,092 |
| Brand Logos That Start With C | 0 | - | 4.17 | 48,960 |
| Vegetables by Picture | 0 | - | 4.39 | 62,781 |
| Pick a Picture - Musical Instruments | 0 | - | 4.53 | 51,791 |
| Elements Named for Countries | 0 | - | 4.52 | 24,350 |
| Albert Einstein Trivia | 0 | - | 4.57 | 18,305 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 59,613 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,049 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,443 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,046 |
| Least-Forested Countries | 0 | - | 4.53 | 64,873 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,675 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,058 |
