| Animals by Skeleton Image | 0 | - | 4.81 | 46,824 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,487 |
| Empires by Maps | 0 | - | 4.98 | 121,491 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,054 |
| Elements by Picture | 0 | - | 4.27 | 70,224 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,471 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,451 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,238 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,103 |
| Play-Doh People from History | 0 | - | 4.99 | 95,351 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,442 |
| Where Are These Doors? | 0 | - | 4.45 | 30,158 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,855 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,933 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,950 |
| All Country Flags of the World | 0 | - | 5.00 | 3,700,923 |
| Metals of Antiquity | 0 | - | 4.95 | 93,802 |
| Years in History by Picture | 0 | - | 4.44 | 35,703 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,288 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,554 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,045 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,659 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,970 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,429 |
| Name that Object #1 | 0 | - | 3.57 | 96,573 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,911 |
| Flags with Crescents | 0 | - | 4.98 | 170,974 |
| Country Flag Trivia | 0 | - | 4.81 | 57,782 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,622 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,192 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,289 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,751 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,787 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,890 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,335 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,414 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 183,181 |
| National Football Team Logos | 0 | - | 4.85 | 181,380 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,809 |
| Old Movies by Picture | 0 | - | 4.51 | 25,214 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,254 |
| Random Logos Quiz | 0 | - | 4.33 | 209,136 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,591 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,229 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,198 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,759 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,957 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,576 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,904 |
| Fruits by Picture | 0 | - | 4.19 | 808,705 |
| Geography by Picture - B | 0 | - | 4.42 | 55,741 |
| Geography by Picture - H | 0 | - | 4.50 | 58,341 |
| Geography by Picture - N | 0 | - | 4.45 | 42,313 |
| Geography by Picture - R | 0 | - | 4.56 | 41,119 |
| Geography by Picture - T | 0 | - | 4.54 | 57,962 |
| Flags to Languages | 0 | - | 4.95 | 174,297 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 116,024 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,410 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,870 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,859 |
| Countries with Glaciers | 0 | - | 4.97 | 105,701 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,594 |
| Name that Object #2 | 0 | - | 3.64 | 15,494 |
| Name that Object #3 | 0 | - | 3.93 | 14,445 |
| Star Wars Original Trilogy Characters by Picture | 0 | - | 4.91 | 49,978 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,763 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,822 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,334 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 542,844 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,620 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,340 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,719 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,221 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,567 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,423 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,889 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,258 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,533 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,620 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,174 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,898 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,819 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,122 |
| Name that Bug | 0 | - | 4.12 | 45,614 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,474 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,195 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,911 |
| Islands by Picture | 0 | - | 4.28 | 107,577 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,419 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,468 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,861 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,927 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,428 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,289 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,162 |
| International Footballers by Picture | 0 | - | 4.51 | 56,219 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,662 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,333 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,095 |
| Geography by Picture - A | 0 | - | 4.39 | 60,393 |
| Geography by Picture - D | 0 | - | 4.15 | 45,758 |
| Geography by Picture - F | 0 | - | 4.31 | 51,137 |
| Geography by Picture - G | 0 | - | 4.39 | 48,051 |
| Geography by Picture - J | 0 | - | 4.16 | 38,566 |
| Geography by Picture - K | 0 | - | 4.29 | 33,222 |
| Geography by Picture - C | 0 | - | 4.31 | 57,196 |
| Geography by Picture - L | 0 | - | 4.37 | 59,097 |
| Geography by Picture - M | 0 | - | 4.14 | 40,554 |
| Geography by Picture - P | 0 | - | 4.24 | 42,535 |
| Geography by Picture - S | 0 | - | 4.38 | 47,151 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,694 |
| Flag Maths | 0 | - | 4.61 | 57,816 |
| Satellite Images #1 | 0 | - | 4.47 | 129,611 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,503 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,091 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,117 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,115 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,452 |
| Soccer Team Logos | 0 | - | 4.26 | 376,783 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,379 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,754 |
| Movie Logos | 0 | - | 4.33 | 239,870 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,962 |
| History by Picture - A | 0 | - | 4.26 | 46,060 |
| History by Picture - B | 0 | - | 4.40 | 49,240 |
| History by Picture - C | 0 | - | 4.36 | 54,772 |
| History by Picture - F | 0 | - | 4.35 | 38,110 |
| History by Picture - G | 0 | - | 4.40 | 42,348 |
| History by Picture - D | 0 | - | 4.29 | 44,564 |
| History by Picture - E | 0 | - | 4.25 | 44,147 |
| History by Picture - H | 0 | - | 4.37 | 36,999 |
| History by Picture - K | 0 | - | 4.35 | 33,537 |
| History by Picture - M | 0 | - | 4.17 | 36,322 |
| History by Picture - N | 0 | - | 4.40 | 41,461 |
| History by Picture - O | 0 | - | 4.39 | 36,488 |
| History by Picture - T | 0 | - | 4.20 | 33,482 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,576 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,518 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,497 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,833 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,495 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,220 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,434,391 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,687 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,739 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,593 |
| Foods by Picture | 0 | - | 3.81 | 226,450 |
| Flowers by Picture | 0 | - | 4.46 | 105,820 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,604 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,913 |
| Christmas by Picture | 0 | - | 4.26 | 28,221 |
| Hats by Picture | 0 | - | 4.21 | 18,007 |
| Weapons by Picture | 0 | - | 4.13 | 21,138 |
| Cars by Picture | 0 | - | 3.89 | 41,736 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,357 |
| Authors by Picture | 0 | - | 4.48 | 25,612 |
| Plants by Picture | 0 | - | 4.24 | 14,508 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,693 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,070 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,076 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,405 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,217 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,967 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,762 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,429 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,277 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,959 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,476 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,701 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,683 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,612 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,326 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,035 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,692 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,747 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,971 |
| Women in History by Picture | 0 | - | 4.25 | 26,003 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,318 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,837 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 240,338 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,820 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,867 |
| Musicians by Picture #1 | 0 | - | 4.38 | 109,736 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,169 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,444 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,426 |
| Geography by Picture - E | 0 | - | 3.55 | 47,470 |
| Landforms by Picture | 0 | - | 4.31 | 20,735 |
| Geography by Picture - I | 0 | - | 4.00 | 39,514 |
| Geography by Picture - O | 0 | - | 4.01 | 28,223 |
| Emoji Flags | 0 | - | 4.35 | 44,242 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,158 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,478 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,527 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,832 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,142 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,906 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,401 |
| Airline Logos | 0 | - | 4.45 | 141,267 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,197 |
