| Former Countries by Territory Map | 0 | - | 4.96 | 102,543 |
| Empires by Maps | 0 | - | 4.98 | 119,962 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,258 |
| Elements by Picture | 0 | - | 4.27 | 69,843 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,283 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,355 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,195 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,658 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 103,952 |
| Play-Doh People from History | 0 | - | 4.99 | 94,585 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,435 |
| All Country Flags of the World | 0 | - | 5.00 | 3,648,556 |
| Metals of Antiquity | 0 | - | 4.95 | 93,305 |
| Years in History by Picture | 0 | - | 4.44 | 35,441 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,753 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,538 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,576 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,552 |
| Name that Object #1 | 0 | - | 3.57 | 96,465 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,352 |
| Flags with Crescents | 0 | - | 4.98 | 169,083 |
| Country Flag Trivia | 0 | - | 4.81 | 56,773 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,423 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,238 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,039 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,106 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,016 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,611 |
| National Football Team Logos | 0 | - | 4.85 | 179,951 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,669 |
| Old Movies by Picture | 0 | - | 4.51 | 25,051 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,954 |
| Random Logos Quiz | 0 | - | 4.31 | 208,133 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,360 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,976 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,903 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,542 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,744 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,447 |
| Fruits by Picture | 0 | - | 4.19 | 806,668 |
| Geography by Picture - B | 0 | - | 4.42 | 55,559 |
| Geography by Picture - H | 0 | - | 4.50 | 58,181 |
| Geography by Picture - N | 0 | - | 4.45 | 42,171 |
| Geography by Picture - R | 0 | - | 4.56 | 40,986 |
| Geography by Picture - T | 0 | - | 4.54 | 57,804 |
| Flags to Languages | 0 | - | 4.95 | 173,393 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 114,690 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,393 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,248 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,550 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,403 |
| Countries with Glaciers | 0 | - | 4.97 | 105,058 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,884 |
| Name that Object #2 | 0 | - | 3.64 | 15,430 |
| Name that Object #3 | 0 | - | 3.93 | 14,384 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,280 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,098 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,885 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 537,484 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,454 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,109 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,519 |
| Pictures by Letter - F | 0 | - | 4.17 | 28,999 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,426 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,264 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,735 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,088 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,352 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,465 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,013 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,756 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,646 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,870 |
| Name that Bug | 0 | - | 4.12 | 45,535 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,307 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,874 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,611 |
| Islands by Picture | 0 | - | 4.29 | 106,729 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,219 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,600 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,538 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,158 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,663 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,950 |
| International Footballers by Picture | 0 | - | 4.50 | 55,414 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,160 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,452 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,711 |
| Geography by Picture - A | 0 | - | 4.39 | 60,199 |
| Geography by Picture - D | 0 | - | 4.15 | 45,612 |
| Geography by Picture - F | 0 | - | 4.31 | 50,953 |
| Geography by Picture - G | 0 | - | 4.38 | 47,912 |
| Geography by Picture - J | 0 | - | 4.16 | 38,432 |
| Geography by Picture - K | 0 | - | 4.29 | 33,098 |
| Geography by Picture - C | 0 | - | 4.31 | 57,033 |
| Geography by Picture - L | 0 | - | 4.37 | 58,907 |
| Geography by Picture - M | 0 | - | 4.14 | 40,423 |
| Geography by Picture - P | 0 | - | 4.24 | 42,399 |
| Geography by Picture - S | 0 | - | 4.38 | 47,014 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,981 |
| Flag Maths | 0 | - | 4.64 | 57,745 |
| Satellite Images #1 | 0 | - | 4.47 | 129,286 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,239 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,862 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,858 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,938 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,840 |
| Soccer Team Logos | 0 | - | 4.26 | 373,621 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 179,497 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 261,309 |
| Video Game Logos Quiz | 0 | - | 4.40 | 183,661 |
| Movie Logos | 0 | - | 4.33 | 237,855 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,564 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,070 |
| History by Picture - A | 0 | - | 4.26 | 45,745 |
| History by Picture - B | 0 | - | 4.40 | 48,893 |
| History by Picture - C | 0 | - | 4.36 | 54,421 |
| History by Picture - F | 0 | - | 4.35 | 37,843 |
| History by Picture - G | 0 | - | 4.40 | 42,103 |
| History by Picture - D | 0 | - | 4.29 | 44,273 |
| History by Picture - E | 0 | - | 4.27 | 43,883 |
| History by Picture - H | 0 | - | 4.37 | 36,757 |
| History by Picture - K | 0 | - | 4.35 | 33,324 |
| History by Picture - M | 0 | - | 4.17 | 36,118 |
| History by Picture - N | 0 | - | 4.40 | 41,221 |
| History by Picture - O | 0 | - | 4.39 | 36,279 |
| History by Picture - T | 0 | - | 4.20 | 33,282 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,171 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,242 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,417 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,201 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,581 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,557 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,306 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,417,800 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,957 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,166 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 268,717 |
| Foods by Picture | 0 | - | 3.81 | 225,951 |
| Flowers by Picture | 0 | - | 4.46 | 105,583 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,282 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,698 |
| Christmas by Picture | 0 | - | 4.26 | 28,152 |
| Hats by Picture | 0 | - | 4.21 | 17,955 |
| Weapons by Picture | 0 | - | 4.13 | 21,026 |
| Cars by Picture | 0 | - | 3.89 | 41,419 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,284 |
| Authors by Picture | 0 | - | 4.48 | 25,513 |
| Plants by Picture | 0 | - | 4.24 | 14,423 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 80,851 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,137 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,611 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,833 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 58,765 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,449 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,323 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,057 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,085 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,523 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,163 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,066 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,324 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,357 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,121 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,601 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,298 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,287 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,131 |
| Women in History by Picture | 0 | - | 4.25 | 25,888 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,101 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,756 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 239,050 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 158,919 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,148 |
| Musicians by Picture #1 | 0 | - | 4.39 | 108,394 |
| Musicians by Picture #2 | 0 | - | 4.29 | 76,172 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,712 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,849 |
| Geography by Picture - E | 0 | - | 3.55 | 47,351 |
| Landforms by Picture | 0 | - | 4.31 | 20,654 |
| Geography by Picture - I | 0 | - | 4.00 | 39,396 |
| Geography by Picture - O | 0 | - | 4.01 | 28,114 |
| Emoji Flags | 0 | - | 4.35 | 44,007 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,776 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,804 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,361 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,263 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,576 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,783 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 394,189 |
| Airline Logos | 0 | - | 4.45 | 140,535 |
| Fast Food Logos Quiz | 0 | - | 4.44 | 248,037 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 158,744 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,412 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,827 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,367 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,932 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,525 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,451 |
| Pictures by Letter - C | 0 | - | 3.99 | 30,173 |
