| Elements by Picture | 0 | - | 4.28 | 69,622 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,183 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,785 |
| Empires by Maps | 0 | - | 4.98 | 118,790 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,064 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,575 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,293 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,037 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,970 |
| Play-Doh People from History | 0 | - | 4.99 | 93,996 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,412 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,819 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,118 |
| All Country Flags of the World | 0 | - | 5.00 | 3,612,100 |
| Metals of Antiquity | 0 | - | 4.94 | 92,996 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,528,089 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,247 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,260 |
| Years in History by Picture | 0 | - | 4.44 | 35,169 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,920 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,317 |
| Flags with Crescents | 0 | - | 4.98 | 167,853 |
| Country Flag Trivia | 0 | - | 4.81 | 56,081 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,600 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,593 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,114 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,585 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,493 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,164 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,827 |
| National Football Team Logos | 0 | - | 4.84 | 178,944 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,865 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,563 |
| Name that Object #1 | 0 | - | 3.56 | 96,330 |
| Flags to Languages | 0 | - | 4.95 | 172,676 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,170 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,383 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,299 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,717 |
| Countries with Glaciers | 0 | - | 4.97 | 104,736 |
| Fruits by Picture | 0 | - | 4.20 | 805,091 |
| Old Movies by Picture | 0 | - | 4.51 | 24,866 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,739 |
| Geography by Picture - B | 0 | - | 4.42 | 55,448 |
| Geography by Picture - H | 0 | - | 4.50 | 58,073 |
| Geography by Picture - N | 0 | - | 4.45 | 42,069 |
| Geography by Picture - R | 0 | - | 4.55 | 40,898 |
| Geography by Picture - T | 0 | - | 4.54 | 57,707 |
| Random Logos Quiz | 0 | - | 4.31 | 207,228 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,549 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,172 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,770 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,666 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,355 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,559 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,162 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,396 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,935 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,823 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,539 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 533,103 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,700 |
| Name that Bug | 0 | - | 4.12 | 45,465 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,202 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,667 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,453 |
| Name that Object #2 | 0 | - | 3.64 | 15,341 |
| Islands by Picture | 0 | - | 4.29 | 106,071 |
| Name that Object #3 | 0 | - | 3.93 | 14,315 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,089 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,903 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,898 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,041 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,313 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,971 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,220 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,809 |
| International Footballers by Picture | 0 | - | 4.50 | 54,874 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,979 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,792 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,379 |
| Geography by Picture - A | 0 | - | 4.39 | 60,077 |
| Geography by Picture - D | 0 | - | 4.15 | 45,525 |
| Geography by Picture - F | 0 | - | 4.31 | 50,853 |
| Geography by Picture - G | 0 | - | 4.38 | 47,822 |
| Geography by Picture - J | 0 | - | 4.16 | 38,354 |
| Geography by Picture - K | 0 | - | 4.29 | 33,035 |
| Geography by Picture - C | 0 | - | 4.31 | 56,939 |
| Geography by Picture - L | 0 | - | 4.37 | 58,793 |
| Geography by Picture - M | 0 | - | 4.14 | 40,362 |
| Geography by Picture - P | 0 | - | 4.24 | 42,319 |
| Geography by Picture - S | 0 | - | 4.38 | 46,934 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,713 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,649 |
| Flag Maths | 0 | - | 4.78 | 57,691 |
| Satellite Images #1 | 0 | - | 4.46 | 129,069 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,036 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,690 |
| Satellite Images Quiz #5 | 0 | - | 4.49 | 49,689 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,839 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,459 |
| Soccer Team Logos | 0 | - | 4.26 | 371,378 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,405,221 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 176,891 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 259,635 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,857 |
| Movie Logos | 0 | - | 4.33 | 236,293 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,925 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,329 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,433 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,312 |
| Pictures by Letter - G | 0 | - | 4.14 | 27,956 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,369 |
| Pictures by Letter - F | 0 | - | 4.17 | 28,843 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,328 |
| Pictures by Letter - Y | 0 | - | 4.22 | 26,137 |
| Pictures by Letter - R | 0 | - | 4.09 | 24,615 |
| Pictures by Letter - K | 0 | - | 4.18 | 24,958 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,211 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,351 |
| Pictures by Letter - P | 0 | - | 4.05 | 25,895 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,651 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,518 |
| History by Picture - A | 0 | - | 4.25 | 45,510 |
| History by Picture - B | 0 | - | 4.40 | 48,642 |
| History by Picture - C | 0 | - | 4.36 | 54,151 |
| History by Picture - F | 0 | - | 4.35 | 37,637 |
| History by Picture - G | 0 | - | 4.40 | 41,896 |
| History by Picture - D | 0 | - | 4.29 | 44,061 |
| History by Picture - E | 0 | - | 4.27 | 43,676 |
| History by Picture - H | 0 | - | 4.37 | 36,588 |
| History by Picture - K | 0 | - | 4.35 | 33,150 |
| History by Picture - M | 0 | - | 4.17 | 35,949 |
| History by Picture - N | 0 | - | 4.40 | 41,039 |
| History by Picture - O | 0 | - | 4.39 | 36,084 |
| History by Picture - T | 0 | - | 4.20 | 33,137 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,927 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,131 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,342 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 44,955 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,404 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,568 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,795 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 268,090 |
| Flowers by Picture | 0 | - | 4.46 | 105,056 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,566 |
| Authors by Picture | 0 | - | 4.48 | 25,414 |
| Fruit and Vegetable Emojis | 0 | - | 4.43 | 79,615 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,635 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,219 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,465 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 58,495 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,163 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,998 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,820 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,940 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,209 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,927 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,548 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,083 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,172 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,960 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,315 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,060 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,013 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,702 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,961 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,898 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 158,199 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,561 |
| Musicians by Picture #1 | 0 | - | 4.39 | 107,384 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,475 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,177 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,431 |
| Emoji Flags | 0 | - | 4.35 | 43,851 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,520 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,277 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,268 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,829 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,193 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,685 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 393,235 |
| Airline Logos | 0 | - | 4.45 | 140,074 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 247,171 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 158,044 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,872 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,818 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,354 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,126 |
| Vegetables by Picture | 0 | - | 4.39 | 62,941 |
| Pick a Picture - Musical Instruments | 0 | - | 4.53 | 51,913 |
| Elements Named for Countries | 0 | - | 4.52 | 24,453 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,324 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,701 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,626 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,488 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,152 |
| Least-Forested Countries | 0 | - | 4.53 | 64,946 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,777 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,084 |
