| Animals by Skeleton Image | 0 | - | 4.81 | 46,847 |
| Elements by Picture | 0 | - | 4.27 | 70,253 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,481 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,527 |
| Empires by Maps | 0 | - | 4.98 | 121,550 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,084 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,261 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,460 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,147 |
| Play-Doh People from History | 0 | - | 4.99 | 95,381 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,466 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,875 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,955 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,977 |
| All Country Flags of the World | 0 | - | 5.00 | 3,703,093 |
| Metals of Antiquity | 0 | - | 4.95 | 93,815 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,930 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,244 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,808 |
| Where Are These Doors? | 0 | - | 4.45 | 30,163 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,441 |
| Years in History by Picture | 0 | - | 4.44 | 35,718 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,932 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,311 |
| Flags with Crescents | 0 | - | 4.98 | 171,034 |
| Country Flag Trivia | 0 | - | 4.81 | 57,816 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,686 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,239 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,350 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,793 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,827 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,908 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,366 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,477 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 183,333 |
| National Football Team Logos | 0 | - | 4.85 | 181,469 |
| Merged Company Logos #2 | 0 | - | 4.75 | 78,005 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,813 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,931 |
| Name that Object #1 | 0 | - | 3.57 | 96,585 |
| Flags to Languages | 0 | - | 4.95 | 174,334 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,580 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,886 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,885 |
| Countries with Glaciers | 0 | - | 4.97 | 105,717 |
| Fruits by Picture | 0 | - | 4.19 | 808,821 |
| Old Movies by Picture | 0 | - | 4.51 | 25,226 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,264 |
| Geography by Picture - B | 0 | - | 4.42 | 55,747 |
| Geography by Picture - H | 0 | - | 4.50 | 58,349 |
| Geography by Picture - N | 0 | - | 4.45 | 42,319 |
| Geography by Picture - R | 0 | - | 4.56 | 41,122 |
| Geography by Picture - T | 0 | - | 4.54 | 57,967 |
| Random Logos Quiz | 0 | - | 4.33 | 209,183 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 116,069 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,604 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,239 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,212 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,766 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,966 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,415 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,625 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,778 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,897 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,359 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 543,063 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,130 |
| Name that Bug | 0 | - | 4.12 | 45,615 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,477 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,213 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,932 |
| Name that Object #2 | 0 | - | 3.64 | 15,507 |
| Islands by Picture | 0 | - | 4.28 | 107,612 |
| Name that Object #3 | 0 | - | 3.93 | 14,450 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,425 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,525 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,479 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,903 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,950 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,440 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,329 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,168 |
| International Footballers by Picture | 0 | - | 4.51 | 56,257 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,716 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,378 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,109 |
| Geography by Picture - A | 0 | - | 4.39 | 60,399 |
| Geography by Picture - D | 0 | - | 4.15 | 45,765 |
| Geography by Picture - F | 0 | - | 4.31 | 51,142 |
| Geography by Picture - G | 0 | - | 4.39 | 48,057 |
| Geography by Picture - J | 0 | - | 4.16 | 38,570 |
| Geography by Picture - K | 0 | - | 4.29 | 33,227 |
| Geography by Picture - C | 0 | - | 4.31 | 57,204 |
| Geography by Picture - L | 0 | - | 4.37 | 59,101 |
| Geography by Picture - M | 0 | - | 4.14 | 40,557 |
| Geography by Picture - P | 0 | - | 4.24 | 42,537 |
| Geography by Picture - S | 0 | - | 4.38 | 47,156 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,758 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,267 |
| Flag Maths | 0 | - | 4.61 | 57,822 |
| Satellite Images #1 | 0 | - | 4.47 | 129,851 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,581 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,140 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,158 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,153 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,473 |
| Soccer Team Logos | 0 | - | 4.26 | 376,945 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,435,150 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,467 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,789 |
| Movie Logos | 0 | - | 4.33 | 239,973 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,999 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,626 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,346 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,728 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,231 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,576 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,428 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,894 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,266 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,540 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,623 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,178 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,905 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,824 |
| History by Picture - A | 0 | - | 4.26 | 46,074 |
| History by Picture - B | 0 | - | 4.40 | 49,261 |
| History by Picture - C | 0 | - | 4.36 | 54,788 |
| History by Picture - F | 0 | - | 4.35 | 38,124 |
| History by Picture - G | 0 | - | 4.40 | 42,360 |
| History by Picture - D | 0 | - | 4.29 | 44,578 |
| History by Picture - E | 0 | - | 4.25 | 44,159 |
| History by Picture - H | 0 | - | 4.37 | 37,015 |
| History by Picture - K | 0 | - | 4.35 | 33,554 |
| History by Picture - M | 0 | - | 4.17 | 36,337 |
| History by Picture - N | 0 | - | 4.40 | 41,473 |
| History by Picture - O | 0 | - | 4.39 | 36,502 |
| History by Picture - T | 0 | - | 4.20 | 33,490 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,587 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,519 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,507 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,844 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,714 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,763 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,626 |
| Flowers by Picture | 0 | - | 4.46 | 105,824 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,926 |
| Authors by Picture | 0 | - | 4.48 | 25,616 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,744 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,108 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,098 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,419 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,231 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,996 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,782 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,442 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,292 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,974 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,493 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,708 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,690 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,622 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,332 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,047 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,709 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,759 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,990 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,321 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 240,393 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,859 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,895 |
| Musicians by Picture #1 | 0 | - | 4.38 | 109,796 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,203 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,469 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,447 |
| Emoji Flags | 0 | - | 4.35 | 44,254 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,171 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,518 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,582 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,859 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,171 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,914 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,453 |
| Airline Logos | 0 | - | 4.45 | 141,298 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,240 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 159,758 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,391 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,135 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,505 |
| Brand Logos That Start With D | 0 | - | 4.36 | 62,065 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,763 |
| Brand Logos That Start With C | 0 | - | 4.20 | 50,028 |
| Vegetables by Picture | 0 | - | 4.36 | 63,706 |
| Pick a Picture - Musical Instruments | 0 | - | 4.53 | 52,631 |
| Elements Named for Countries | 0 | - | 4.52 | 24,923 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,437 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,937 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,782 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,711 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,776 |
