| Animals by Skeleton Image | 0 | - | 4.81 | 46,791 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,426 |
| Empires by Maps | 0 | - | 4.98 | 121,415 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,009 |
| Elements by Picture | 0 | - | 4.27 | 70,188 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,450 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,435 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,201 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,035 |
| Play-Doh People from History | 0 | - | 4.99 | 95,301 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,917 |
| All Country Flags of the World | 0 | - | 5.00 | 3,696,865 |
| Metals of Antiquity | 0 | - | 4.95 | 93,759 |
| Years in History by Picture | 0 | - | 4.44 | 35,687 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,248 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,542,920 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,715 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,390 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,403 |
| Name that Object #1 | 0 | - | 3.57 | 96,564 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,868 |
| Flags with Crescents | 0 | - | 4.98 | 170,843 |
| Country Flag Trivia | 0 | - | 4.81 | 57,706 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,534 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,113 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,208 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,707 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,731 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,295 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 182,909 |
| National Football Team Logos | 0 | - | 4.85 | 181,297 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,802 |
| Old Movies by Picture | 0 | - | 4.51 | 25,196 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,234 |
| Random Logos Quiz | 0 | - | 4.33 | 209,077 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,572 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,212 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,171 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,739 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,938 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,565 |
| Fruits by Picture | 0 | - | 4.19 | 808,590 |
| Geography by Picture - B | 0 | - | 4.42 | 55,727 |
| Geography by Picture - H | 0 | - | 4.50 | 58,332 |
| Geography by Picture - N | 0 | - | 4.45 | 42,298 |
| Geography by Picture - R | 0 | - | 4.56 | 41,106 |
| Geography by Picture - T | 0 | - | 4.54 | 57,951 |
| Flags to Languages | 0 | - | 4.95 | 174,223 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,952 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,885 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,403 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,847 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,824 |
| Countries with Glaciers | 0 | - | 4.97 | 105,677 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,560 |
| Name that Object #2 | 0 | - | 3.64 | 15,490 |
| Name that Object #3 | 0 | - | 3.93 | 14,442 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,719 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,660 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,307 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 542,534 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,598 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,323 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,701 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,196 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,556 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,413 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,878 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,243 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,518 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,605 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,161 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,885 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,804 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,100 |
| Name that Bug | 0 | - | 4.12 | 45,607 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,462 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,136 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,846 |
| Islands by Picture | 0 | - | 4.28 | 107,514 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,411 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,800 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,882 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,407 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,218 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,146 |
| International Footballers by Picture | 0 | - | 4.51 | 56,164 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,539 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,255 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,073 |
| Geography by Picture - A | 0 | - | 4.39 | 60,380 |
| Geography by Picture - D | 0 | - | 4.15 | 45,748 |
| Geography by Picture - F | 0 | - | 4.31 | 51,127 |
| Geography by Picture - G | 0 | - | 4.39 | 48,045 |
| Geography by Picture - J | 0 | - | 4.16 | 38,556 |
| Geography by Picture - K | 0 | - | 4.29 | 33,214 |
| Geography by Picture - C | 0 | - | 4.31 | 57,182 |
| Geography by Picture - L | 0 | - | 4.37 | 59,087 |
| Geography by Picture - M | 0 | - | 4.14 | 40,545 |
| Geography by Picture - P | 0 | - | 4.24 | 42,527 |
| Geography by Picture - S | 0 | - | 4.38 | 47,139 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,554 |
| Flag Maths | 0 | - | 4.61 | 57,813 |
| Satellite Images #1 | 0 | - | 4.47 | 129,584 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,481 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,062 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,084 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,095 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,420 |
| Soccer Team Logos | 0 | - | 4.26 | 376,596 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,266 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,686 |
| Movie Logos | 0 | - | 4.33 | 239,738 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,902 |
| History by Picture - A | 0 | - | 4.26 | 46,037 |
| History by Picture - B | 0 | - | 4.40 | 49,218 |
| History by Picture - C | 0 | - | 4.36 | 54,745 |
| History by Picture - F | 0 | - | 4.35 | 38,094 |
| History by Picture - G | 0 | - | 4.40 | 42,336 |
| History by Picture - D | 0 | - | 4.29 | 44,544 |
| History by Picture - E | 0 | - | 4.25 | 44,130 |
| History by Picture - H | 0 | - | 4.37 | 36,986 |
| History by Picture - K | 0 | - | 4.35 | 33,525 |
| History by Picture - M | 0 | - | 4.17 | 36,305 |
| History by Picture - N | 0 | - | 4.40 | 41,446 |
| History by Picture - O | 0 | - | 4.39 | 36,474 |
| History by Picture - T | 0 | - | 4.20 | 33,463 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,552 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,508 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,473 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,819 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,442 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,160 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,433,445 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,646 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,698 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,522 |
| Foods by Picture | 0 | - | 3.81 | 226,424 |
| Flowers by Picture | 0 | - | 4.46 | 105,800 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,588 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,898 |
| Christmas by Picture | 0 | - | 4.26 | 28,215 |
| Hats by Picture | 0 | - | 4.21 | 18,004 |
| Weapons by Picture | 0 | - | 4.13 | 21,132 |
| Cars by Picture | 0 | - | 3.89 | 41,721 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,347 |
| Authors by Picture | 0 | - | 4.48 | 25,602 |
| Plants by Picture | 0 | - | 4.24 | 14,501 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,641 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,015 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,054 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,376 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,190 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,736 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,723 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,382 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,245 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,927 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,435 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,649 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,651 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,586 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,311 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,988 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,660 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,705 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,929 |
| Women in History by Picture | 0 | - | 4.25 | 25,993 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,299 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,828 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 240,234 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,745 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,806 |
| Musicians by Picture #1 | 0 | - | 4.37 | 109,651 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,104 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,402 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,386 |
| Geography by Picture - E | 0 | - | 3.55 | 47,464 |
| Landforms by Picture | 0 | - | 4.31 | 20,730 |
| Geography by Picture - I | 0 | - | 4.00 | 39,503 |
| Geography by Picture - O | 0 | - | 4.01 | 28,209 |
| Emoji Flags | 0 | - | 4.35 | 44,226 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,124 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,431 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,507 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,791 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,105 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,896 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,303 |
| Airline Logos | 0 | - | 4.45 | 141,216 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,150 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 159,635 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,309 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,077 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,431 |
| Brand Logos That Start With D | 0 | - | 4.36 | 61,987 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,677 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,984 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,608 |
| Pictures by Letter - C | 0 | - | 4.00 | 30,343 |
