| Former Countries by Territory Map | 0 | - | 4.96 | 102,704 |
| Empires by Maps | 0 | - | 4.98 | 120,272 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,406 |
| Elements by Picture | 0 | - | 4.27 | 69,906 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,306 |
| Animals by Skeleton Image | 0 | - | 4.81 | 46,432 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,238 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,776 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,176 |
| Play-Doh People from History | 0 | - | 4.99 | 94,705 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,535 |
| All Country Flags of the World | 0 | - | 5.00 | 3,657,084 |
| Metals of Antiquity | 0 | - | 4.95 | 93,395 |
| Years in History by Picture | 0 | - | 4.44 | 35,481 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,844 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,536,048 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,313 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,050 |
| Name that Object #1 | 0 | - | 3.57 | 96,483 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,456 |
| Flags with Crescents | 0 | - | 4.98 | 169,352 |
| Country Flag Trivia | 0 | - | 4.81 | 56,936 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,626 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,388 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,251 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,202 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,152 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,727 |
| National Football Team Logos | 0 | - | 4.85 | 180,203 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,702 |
| Old Movies by Picture | 0 | - | 4.51 | 25,077 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,992 |
| Random Logos Quiz | 0 | - | 4.31 | 208,315 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,400 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,021 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,951 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,573 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,786 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,474 |
| Fruits by Picture | 0 | - | 4.19 | 807,043 |
| Geography by Picture - B | 0 | - | 4.42 | 55,589 |
| Geography by Picture - H | 0 | - | 4.50 | 58,212 |
| Geography by Picture - N | 0 | - | 4.45 | 42,191 |
| Geography by Picture - R | 0 | - | 4.56 | 41,013 |
| Geography by Picture - T | 0 | - | 4.54 | 57,826 |
| Flags to Languages | 0 | - | 4.95 | 173,536 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 114,940 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,480 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,265 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,609 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,497 |
| Countries with Glaciers | 0 | - | 4.97 | 105,376 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,006 |
| Name that Object #2 | 0 | - | 3.64 | 15,441 |
| Name that Object #3 | 0 | - | 3.93 | 14,395 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,362 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,347 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 62,962 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 538,460 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,484 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,154 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,556 |
| Pictures by Letter - F | 0 | - | 4.17 | 29,040 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,454 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,294 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,763 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,119 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,382 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,491 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,047 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,780 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,675 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,904 |
| Name that Bug | 0 | - | 4.12 | 45,552 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,336 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,936 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,674 |
| Islands by Picture | 0 | - | 4.29 | 106,856 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,253 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,754 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,609 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,205 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,751 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,001 |
| International Footballers by Picture | 0 | - | 4.50 | 55,545 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,390 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,565 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,772 |
| Geography by Picture - A | 0 | - | 4.39 | 60,232 |
| Geography by Picture - D | 0 | - | 4.15 | 45,648 |
| Geography by Picture - F | 0 | - | 4.31 | 50,986 |
| Geography by Picture - G | 0 | - | 4.38 | 47,938 |
| Geography by Picture - J | 0 | - | 4.16 | 38,455 |
| Geography by Picture - K | 0 | - | 4.29 | 33,120 |
| Geography by Picture - C | 0 | - | 4.31 | 57,055 |
| Geography by Picture - L | 0 | - | 4.37 | 58,941 |
| Geography by Picture - M | 0 | - | 4.14 | 40,446 |
| Geography by Picture - P | 0 | - | 4.24 | 42,428 |
| Geography by Picture - S | 0 | - | 4.38 | 47,034 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,231 |
| Flag Maths | 0 | - | 4.64 | 57,755 |
| Satellite Images #1 | 0 | - | 4.47 | 129,336 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,275 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,892 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,894 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,964 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,939 |
| Soccer Team Logos | 0 | - | 4.26 | 374,176 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 180,105 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 261,691 |
| Video Game Logos Quiz | 0 | - | 4.40 | 183,872 |
| Movie Logos | 0 | - | 4.33 | 238,256 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,745 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,221 |
| History by Picture - A | 0 | - | 4.26 | 45,793 |
| History by Picture - B | 0 | - | 4.40 | 48,950 |
| History by Picture - C | 0 | - | 4.36 | 54,477 |
| History by Picture - F | 0 | - | 4.35 | 37,885 |
| History by Picture - G | 0 | - | 4.40 | 42,146 |
| History by Picture - D | 0 | - | 4.29 | 44,314 |
| History by Picture - E | 0 | - | 4.25 | 43,933 |
| History by Picture - H | 0 | - | 4.37 | 36,797 |
| History by Picture - K | 0 | - | 4.35 | 33,359 |
| History by Picture - M | 0 | - | 4.17 | 36,148 |
| History by Picture - N | 0 | - | 4.40 | 41,259 |
| History by Picture - O | 0 | - | 4.39 | 36,316 |
| History by Picture - T | 0 | - | 4.20 | 33,313 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,250 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,260 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,428 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,252 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,629 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,719 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,446 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,420,959 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,064 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,249 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 268,846 |
| Foods by Picture | 0 | - | 3.81 | 226,036 |
| Flowers by Picture | 0 | - | 4.46 | 105,617 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,343 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,728 |
| Christmas by Picture | 0 | - | 4.26 | 28,161 |
| Hats by Picture | 0 | - | 4.21 | 17,963 |
| Weapons by Picture | 0 | - | 4.13 | 21,050 |
| Cars by Picture | 0 | - | 3.89 | 41,478 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,293 |
| Authors by Picture | 0 | - | 4.48 | 25,528 |
| Plants by Picture | 0 | - | 4.24 | 14,436 |
| Fruit and Vegetable Emojis | 0 | - | 4.44 | 88,497 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,352 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,719 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,907 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 58,820 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,509 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,401 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,090 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,110 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,594 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,209 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,138 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,396 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,410 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,172 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,689 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,398 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,392 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,526 |
| Women in History by Picture | 0 | - | 4.25 | 25,908 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,150 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,767 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 239,224 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,042 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,239 |
| Musicians by Picture #1 | 0 | - | 4.37 | 108,620 |
| Musicians by Picture #2 | 0 | - | 4.29 | 76,313 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,821 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,927 |
| Geography by Picture - E | 0 | - | 3.55 | 47,370 |
| Landforms by Picture | 0 | - | 4.31 | 20,668 |
| Geography by Picture - I | 0 | - | 4.00 | 39,418 |
| Geography by Picture - O | 0 | - | 4.01 | 28,134 |
| Emoji Flags | 0 | - | 4.35 | 44,056 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,831 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,927 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,381 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,347 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,667 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,800 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 394,380 |
| Airline Logos | 0 | - | 4.45 | 140,638 |
| Fast Food Logos Quiz | 0 | - | 4.44 | 248,245 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 158,957 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,539 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,934 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,480 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,080 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,620 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,484 |
| Pictures by Letter - C | 0 | - | 3.99 | 30,204 |
