| Animals by Skeleton Image | 0 | - | 4.81 | 46,876 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,593 |
| Empires by Maps | 0 | - | 4.98 | 121,661 |
| Elements by Picture | 0 | - | 4.27 | 70,275 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,499 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,470 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,297 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,205 |
| Play-Doh People from History | 0 | - | 4.99 | 95,426 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,005 |
| All Country Flags of the World | 0 | - | 5.00 | 3,706,482 |
| Metals of Antiquity | 0 | - | 4.95 | 93,849 |
| Years in History by Picture | 0 | - | 4.44 | 35,731 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,336 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,544,532 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,519 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,011 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,453 |
| Name that Object #1 | 0 | - | 3.57 | 96,590 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,967 |
| Flags with Crescents | 0 | - | 4.98 | 171,129 |
| Country Flag Trivia | 0 | - | 4.81 | 57,870 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,742 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,299 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,410 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,833 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,861 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,396 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 183,540 |
| National Football Team Logos | 0 | - | 4.85 | 181,589 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,823 |
| Old Movies by Picture | 0 | - | 4.51 | 25,237 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,272 |
| Random Logos Quiz | 0 | - | 4.33 | 209,240 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,620 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,253 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,227 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,781 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,984 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,587 |
| Fruits by Picture | 0 | - | 4.19 | 808,946 |
| Geography by Picture - B | 0 | - | 4.42 | 55,754 |
| Geography by Picture - H | 0 | - | 4.50 | 58,356 |
| Geography by Picture - N | 0 | - | 4.45 | 42,327 |
| Geography by Picture - R | 0 | - | 4.56 | 41,127 |
| Geography by Picture - T | 0 | - | 4.54 | 57,977 |
| Flags to Languages | 0 | - | 4.95 | 174,394 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 116,149 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,962 |
| Countries with Glaciers | 0 | - | 4.97 | 105,745 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,426 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,908 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,914 |
| Name that Object #2 | 0 | - | 3.63 | 15,510 |
| Name that Object #3 | 0 | - | 3.93 | 14,451 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,809 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 339,027 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,381 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 543,412 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,637 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,360 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,743 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,240 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,580 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,431 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,905 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,279 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,550 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,638 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,188 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,911 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,833 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,661 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,141 |
| Name that Bug | 0 | - | 4.12 | 45,623 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,487 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,235 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,949 |
| Islands by Picture | 0 | - | 4.28 | 107,675 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,430 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,962 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,974 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,453 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,375 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,182 |
| International Footballers by Picture | 0 | - | 4.51 | 56,306 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,822 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,440 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,135 |
| Geography by Picture - A | 0 | - | 4.39 | 60,408 |
| Geography by Picture - D | 0 | - | 4.15 | 45,768 |
| Geography by Picture - F | 0 | - | 4.31 | 51,150 |
| Geography by Picture - G | 0 | - | 4.39 | 48,061 |
| Geography by Picture - J | 0 | - | 4.16 | 38,573 |
| Geography by Picture - K | 0 | - | 4.29 | 33,230 |
| Geography by Picture - C | 0 | - | 4.31 | 57,213 |
| Geography by Picture - L | 0 | - | 4.37 | 59,110 |
| Geography by Picture - M | 0 | - | 4.14 | 40,562 |
| Geography by Picture - P | 0 | - | 4.24 | 42,544 |
| Geography by Picture - S | 0 | - | 4.38 | 47,163 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,873 |
| Flag Maths | 0 | - | 4.61 | 57,825 |
| Satellite Images #1 | 0 | - | 4.47 | 129,924 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 109,615 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,172 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,185 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,172 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,494 |
| Soccer Team Logos | 0 | - | 4.26 | 377,182 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,599 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,838 |
| Movie Logos | 0 | - | 4.33 | 240,102 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,048 |
| History by Picture - A | 0 | - | 4.26 | 46,102 |
| History by Picture - B | 0 | - | 4.40 | 49,293 |
| History by Picture - C | 0 | - | 4.33 | 54,822 |
| History by Picture - F | 0 | - | 4.35 | 38,146 |
| History by Picture - G | 0 | - | 4.40 | 42,386 |
| History by Picture - D | 0 | - | 4.29 | 44,607 |
| History by Picture - E | 0 | - | 4.25 | 44,187 |
| History by Picture - H | 0 | - | 4.37 | 37,036 |
| History by Picture - K | 0 | - | 4.35 | 33,572 |
| History by Picture - M | 0 | - | 4.17 | 36,356 |
| History by Picture - N | 0 | - | 4.40 | 41,490 |
| History by Picture - O | 0 | - | 4.39 | 36,519 |
| History by Picture - T | 0 | - | 4.20 | 33,508 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,604 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,526 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,522 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,858 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,572 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,315 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,436,087 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,751 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,806 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,676 |
| Foods by Picture | 0 | - | 3.81 | 226,502 |
| Flowers by Picture | 0 | - | 4.46 | 105,835 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,631 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,935 |
| Christmas by Picture | 0 | - | 4.26 | 28,226 |
| Hats by Picture | 0 | - | 4.21 | 18,013 |
| Weapons by Picture | 0 | - | 4.13 | 21,166 |
| Cars by Picture | 0 | - | 3.89 | 41,776 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,369 |
| Authors by Picture | 0 | - | 4.48 | 25,619 |
| Plants by Picture | 0 | - | 4.24 | 14,519 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,795 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,154 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,121 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,444 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,261 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,021 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,811 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,466 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,321 |
| Birds by Picture #1 | 0 | - | 4.47 | 42,000 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,528 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,732 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,710 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,634 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,345 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,073 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,727 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,781 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 96,024 |
| Women in History by Picture | 0 | - | 4.25 | 26,018 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,333 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,843 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 240,488 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,932 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,941 |
| Musicians by Picture #1 | 0 | - | 4.38 | 109,861 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,262 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,501 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,471 |
| Geography by Picture - E | 0 | - | 3.55 | 47,477 |
| Landforms by Picture | 0 | - | 4.31 | 20,740 |
| Geography by Picture - I | 0 | - | 4.00 | 39,520 |
| Geography by Picture - O | 0 | - | 4.01 | 28,227 |
| Emoji Flags | 0 | - | 4.35 | 44,262 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,191 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,574 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,608 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,902 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,196 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,920 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,525 |
| Airline Logos | 0 | - | 4.45 | 141,339 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,324 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 159,807 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,433 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,181 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,542 |
| Brand Logos That Start With D | 0 | - | 4.36 | 62,106 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,813 |
| Brand Logos That Start With C | 0 | - | 4.20 | 50,062 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,641 |
| Pictures by Letter - C | 0 | - | 4.00 | 30,385 |
| Pictures by Letter - O | 0 | - | 3.98 | 28,827 |
