| Animals by Skeleton Image | 0 | - | 4.81 | 46,966 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,989 |
| Empires by Maps | 0 | - | 4.98 | 122,206 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,467 |
| Elements by Picture | 0 | - | 4.27 | 70,334 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,517 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,553 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,407 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,401 |
| Play-Doh People from History | 0 | - | 4.99 | 95,615 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,144 |
| All Country Flags of the World | 0 | - | 5.00 | 3,716,391 |
| Metals of Antiquity | 0 | - | 4.95 | 93,949 |
| Years in History by Picture | 0 | - | 4.45 | 35,852 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,460 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,412 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,426 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,600 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,498 |
| Name that Object #1 | 0 | - | 3.57 | 96,638 |
| Make a Stained Glass Window | 0 | - | 5.00 | 69,106 |
| Flags with Crescents | 0 | - | 4.98 | 171,432 |
| Country Flag Trivia | 0 | - | 4.81 | 58,097 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,962 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,480 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,662 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,990 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 86,028 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,520 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 184,277 |
| National Football Team Logos | 0 | - | 4.85 | 181,968 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.98 | 110,027 |
| Old Movies by Picture | 0 | - | 4.51 | 25,274 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,315 |
| Random Logos Quiz | 0 | - | 4.33 | 209,730 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,658 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,287 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,272 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,815 |
| Pictures by Letter - M | 0 | - | 4.24 | 38,019 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,602 |
| Fruits by Picture | 0 | - | 4.19 | 809,506 |
| Geography by Picture - B | 0 | - | 4.42 | 55,785 |
| Geography by Picture - H | 0 | - | 4.50 | 58,386 |
| Geography by Picture - N | 0 | - | 4.45 | 42,347 |
| Geography by Picture - R | 0 | - | 4.56 | 41,152 |
| Geography by Picture - T | 0 | - | 4.54 | 58,007 |
| Flags to Languages | 0 | - | 4.95 | 174,545 |
| All North American Pro Sports Logos | 0 | - | 4.72 | 116,464 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 51,056 |
| Countries with Glaciers | 0 | - | 4.97 | 105,820 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,449 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,980 |
| Countries with the Most Forest | 0 | - | 4.87 | 148,004 |
| Name that Object #2 | 0 | - | 3.63 | 15,530 |
| Name that Object #3 | 0 | - | 3.93 | 14,471 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,896 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 340,016 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,477 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 544,387 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,665 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,396 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,776 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,277 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,606 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,462 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,941 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,303 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,589 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,668 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,212 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,942 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,871 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,769 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,228 |
| Name that Bug | 0 | - | 4.12 | 45,646 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,521 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,287 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,989 |
| Islands by Picture | 0 | - | 4.28 | 107,824 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,462 |
| Animals by Close-up Image | 0 | - | 4.42 | 219,099 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 46,029 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,495 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,481 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,224 |
| International Footballers by Picture | 0 | - | 4.51 | 56,463 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 286,516 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,978 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,412 |
| Geography by Picture - A | 0 | - | 4.39 | 60,441 |
| Geography by Picture - D | 0 | - | 4.15 | 45,791 |
| Geography by Picture - F | 0 | - | 4.31 | 51,185 |
| Geography by Picture - G | 0 | - | 4.39 | 48,085 |
| Geography by Picture - J | 0 | - | 4.16 | 38,600 |
| Geography by Picture - K | 0 | - | 4.29 | 33,253 |
| Geography by Picture - C | 0 | - | 4.31 | 57,241 |
| Geography by Picture - L | 0 | - | 4.37 | 59,146 |
| Geography by Picture - M | 0 | - | 4.14 | 40,586 |
| Geography by Picture - P | 0 | - | 4.24 | 42,572 |
| Geography by Picture - S | 0 | - | 4.38 | 47,184 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 282,162 |
| Flag Maths | 0 | - | 4.61 | 57,852 |
| Satellite Images #1 | 0 | - | 4.46 | 130,017 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 109,713 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,410 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,260 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,235 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,599 |
| Soccer Team Logos | 0 | - | 4.26 | 377,823 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 264,015 |
| Video Game Logos Quiz | 0 | - | 4.40 | 185,132 |
| Movie Logos | 0 | - | 4.33 | 240,510 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,218 |
| History by Picture - A | 0 | - | 4.26 | 46,165 |
| History by Picture - B | 0 | - | 4.40 | 49,365 |
| History by Picture - C | 0 | - | 4.33 | 54,903 |
| History by Picture - F | 0 | - | 4.35 | 38,210 |
| History by Picture - G | 0 | - | 4.40 | 42,453 |
| History by Picture - D | 0 | - | 4.29 | 44,670 |
| History by Picture - E | 0 | - | 4.25 | 44,248 |
| History by Picture - H | 0 | - | 4.37 | 37,097 |
| History by Picture - K | 0 | - | 4.35 | 33,633 |
| History by Picture - M | 0 | - | 4.17 | 36,410 |
| History by Picture - N | 0 | - | 4.40 | 41,545 |
| History by Picture - O | 0 | - | 4.39 | 36,565 |
| History by Picture - T | 0 | - | 4.20 | 33,554 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,812 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,539 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,563 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,912 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,712 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,483 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,439,226 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,844 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,884 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,819 |
| Foods by Picture | 0 | - | 3.81 | 226,676 |
| Flowers by Picture | 0 | - | 4.46 | 105,873 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,786 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,957 |
| Christmas by Picture | 0 | - | 4.26 | 28,234 |
| Hats by Picture | 0 | - | 4.21 | 18,021 |
| Weapons by Picture | 0 | - | 4.13 | 21,200 |
| Cars by Picture | 0 | - | 3.89 | 41,829 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,386 |
| Authors by Picture | 0 | - | 4.48 | 25,637 |
| Plants by Picture | 0 | - | 4.24 | 14,524 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,973 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,306 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,187 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,525 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,331 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,072 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,880 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,519 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,358 |
| Birds by Picture #1 | 0 | - | 4.47 | 42,072 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,581 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,817 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,784 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,690 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,383 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,145 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,792 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,855 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 96,122 |
| Women in History by Picture | 0 | - | 4.25 | 26,042 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,359 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,863 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 244,561 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 160,530 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 94,443 |
| Musicians by Picture #1 | 0 | - | 4.38 | 110,113 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,446 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,648 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,590 |
| Geography by Picture - E | 0 | - | 3.55 | 47,497 |
| Landforms by Picture | 0 | - | 4.31 | 20,751 |
| Geography by Picture - I | 0 | - | 4.00 | 39,538 |
| Geography by Picture - O | 0 | - | 4.01 | 28,247 |
| Emoji Flags | 0 | - | 4.35 | 44,296 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.69 | 38,243 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,687 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,666 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 67,006 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,298 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,932 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,748 |
| Airline Logos | 0 | - | 4.45 | 141,470 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,584 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 160,009 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,580 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,338 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,705 |
| Brand Logos That Start With D | 0 | - | 4.37 | 62,242 |
| Brand Logos That Start With L | 0 | - | 4.40 | 61,952 |
| Brand Logos That Start With C | 0 | - | 4.21 | 50,168 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,671 |
| Pictures by Letter - C | 0 | - | 4.00 | 30,416 |
