| Animals by Skeleton Image | 0 | - | 4.81 | 46,669 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,126 |
| Empires by Maps | 0 | - | 4.98 | 120,975 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,806 |
| Elements by Picture | 0 | - | 4.27 | 70,087 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,391 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,353 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,028 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,716 |
| Play-Doh People from History | 0 | - | 4.99 | 95,073 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,758 |
| All Country Flags of the World | 0 | - | 5.00 | 3,681,336 |
| Metals of Antiquity | 0 | - | 4.95 | 93,616 |
| Years in History by Picture | 0 | - | 4.44 | 35,615 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,100 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,259 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,399 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,464 |
| Name that Object #1 | 0 | - | 3.57 | 96,536 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,697 |
| Flags with Crescents | 0 | - | 4.98 | 170,158 |
| Country Flag Trivia | 0 | - | 4.81 | 57,380 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,158 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,830 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,816 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,506 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,499 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,066 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 181,871 |
| National Football Team Logos | 0 | - | 4.85 | 180,874 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,767 |
| Old Movies by Picture | 0 | - | 4.51 | 25,153 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,137 |
| Random Logos Quiz | 0 | - | 4.33 | 208,813 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,514 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,141 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,087 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,684 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,882 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,524 |
| Fruits by Picture | 0 | - | 4.19 | 808,018 |
| Geography by Picture - B | 0 | - | 4.42 | 55,677 |
| Geography by Picture - H | 0 | - | 4.50 | 58,284 |
| Geography by Picture - N | 0 | - | 4.45 | 42,254 |
| Geography by Picture - R | 0 | - | 4.56 | 41,074 |
| Geography by Picture - T | 0 | - | 4.54 | 57,904 |
| Flags to Languages | 0 | - | 4.95 | 173,938 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,602 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,709 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,371 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,757 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,697 |
| Countries with Glaciers | 0 | - | 4.96 | 105,564 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,337 |
| Name that Object #2 | 0 | - | 3.64 | 15,470 |
| Name that Object #3 | 0 | - | 3.93 | 14,425 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,596 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,171 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,173 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 541,008 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,557 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,257 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,648 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,138 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,520 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,371 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,840 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,197 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,463 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,564 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,121 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,841 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,757 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,025 |
| Name that Bug | 0 | - | 4.12 | 45,589 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,422 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,057 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,777 |
| Islands by Picture | 0 | - | 4.28 | 107,269 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,314 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,579 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,787 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,336 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,037 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,091 |
| International Footballers by Picture | 0 | - | 4.51 | 55,912 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,098 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,015 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,963 |
| Geography by Picture - A | 0 | - | 4.39 | 60,328 |
| Geography by Picture - D | 0 | - | 4.15 | 45,711 |
| Geography by Picture - F | 0 | - | 4.31 | 51,074 |
| Geography by Picture - G | 0 | - | 4.39 | 48,004 |
| Geography by Picture - J | 0 | - | 4.16 | 38,516 |
| Geography by Picture - K | 0 | - | 4.29 | 33,177 |
| Geography by Picture - C | 0 | - | 4.31 | 57,131 |
| Geography by Picture - L | 0 | - | 4.37 | 59,046 |
| Geography by Picture - M | 0 | - | 4.14 | 40,509 |
| Geography by Picture - P | 0 | - | 4.24 | 42,483 |
| Geography by Picture - S | 0 | - | 4.38 | 47,090 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,033 |
| Flag Maths | 0 | - | 4.64 | 57,793 |
| Satellite Images #1 | 0 | - | 4.47 | 129,492 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,407 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,994 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,013 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,046 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,192 |
| Soccer Team Logos | 0 | - | 4.26 | 375,682 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 262,689 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,390 |
| Movie Logos | 0 | - | 4.33 | 239,182 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,679 |
| History by Picture - A | 0 | - | 4.26 | 45,952 |
| History by Picture - B | 0 | - | 4.40 | 49,129 |
| History by Picture - C | 0 | - | 4.36 | 54,650 |
| History by Picture - F | 0 | - | 4.35 | 38,007 |
| History by Picture - G | 0 | - | 4.40 | 42,258 |
| History by Picture - D | 0 | - | 4.29 | 44,445 |
| History by Picture - E | 0 | - | 4.25 | 44,061 |
| History by Picture - H | 0 | - | 4.37 | 36,904 |
| History by Picture - K | 0 | - | 4.35 | 33,459 |
| History by Picture - M | 0 | - | 4.17 | 36,238 |
| History by Picture - N | 0 | - | 4.40 | 41,369 |
| History by Picture - O | 0 | - | 4.39 | 36,406 |
| History by Picture - T | 0 | - | 4.20 | 33,399 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,420 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,342 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,481 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,384 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,750 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,125 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,857 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,428,971 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,489 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,555 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,263 |
| Foods by Picture | 0 | - | 3.81 | 226,284 |
| Flowers by Picture | 0 | - | 4.46 | 105,732 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,498 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,837 |
| Christmas by Picture | 0 | - | 4.26 | 28,202 |
| Hats by Picture | 0 | - | 4.21 | 17,990 |
| Weapons by Picture | 0 | - | 4.13 | 21,102 |
| Cars by Picture | 0 | - | 3.89 | 41,622 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,319 |
| Authors by Picture | 0 | - | 4.48 | 25,561 |
| Plants by Picture | 0 | - | 4.24 | 14,480 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,368 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,786 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,957 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,187 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,036 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,647 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,614 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,285 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,209 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,817 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,359 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,366 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,553 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,522 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,252 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,867 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,557 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,584 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,775 |
| Women in History by Picture | 0 | - | 4.25 | 25,967 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,236 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,809 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 239,859 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,491 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,607 |
| Musicians by Picture #1 | 0 | - | 4.37 | 109,261 |
| Musicians by Picture #2 | 0 | - | 4.29 | 76,795 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,173 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,194 |
| Geography by Picture - E | 0 | - | 3.55 | 47,427 |
| Landforms by Picture | 0 | - | 4.31 | 20,701 |
| Geography by Picture - I | 0 | - | 4.00 | 39,470 |
| Geography by Picture - O | 0 | - | 4.01 | 28,178 |
| Emoji Flags | 0 | - | 4.35 | 44,157 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,002 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,234 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,453 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,630 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,929 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,859 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 394,967 |
| Airline Logos | 0 | - | 4.45 | 141,014 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 248,809 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 159,397 |
| Brand Logos That Start With M | 0 | - | 4.40 | 63,113 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,898 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,263 |
| Brand Logos That Start With D | 0 | - | 4.35 | 61,810 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,447 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,861 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,556 |
| Pictures by Letter - C | 0 | - | 4.00 | 30,299 |
