| Birds by Picture #1 | 0 | - | 4.47 | 41,063 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,782 |
| Birds by Picture #2 | 0 | - | 4.33 | 35,912 |
| Birds by Picture #3 | 0 | - | 4.24 | 32,810 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,509 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,197 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,887 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,052 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,041 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,850 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,738 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,877 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,819 |
| Countries With The Most Bird Species | 0 | - | 4.92 | 32,260 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,243 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,581 |
| Animals by Skeleton Image | 0 | - | 4.80 | 45,934 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,734 |
| Name that Bug | 0 | - | 4.12 | 45,438 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,433 |
| Fish by Picture #2 | 0 | - | 4.08 | 18,384 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,364 |
| Empires by Maps | 0 | - | 4.98 | 118,241 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,330 |
| Animals of Australia | 0 | - | 4.52 | 42,137 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,962 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,221 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,652 |
| Play-Doh People from History | 0 | - | 4.99 | 93,742 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,237 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,683 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,450 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 60,973 |
| All Country Flags of the World | 0 | - | 5.00 | 3,596,427 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,106 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,846 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,270 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,737 |
| Flags with Crescents | 0 | - | 4.98 | 167,367 |
| Country Flag Trivia | 0 | - | 4.81 | 55,814 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,280 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,371 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,785 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,373 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,298 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 51,958 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,400 |
| National Football Team Logos | 0 | - | 4.84 | 178,476 |
| Movies with Animals in the Title #1 | 0 | - | 4.21 | 183,003 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 107,978 |
| National Animals | 0 | - | 4.24 | 89,131 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,556 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,275 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,378 |
| Years in History by Picture | 0 | - | 4.44 | 35,063 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,152 |
| Flags to Languages | 0 | - | 4.95 | 172,387 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,203 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,674 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 50,141 |
| Disney Animals | 0 | - | 4.27 | 238,512 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,349 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,172 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,188 |
| Fruits by Picture | 0 | - | 4.20 | 804,402 |
| Old Movies by Picture | 0 | - | 4.51 | 24,770 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,638 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,287 |
| Geography by Picture - B | 0 | - | 4.42 | 55,391 |
| Geography by Picture - H | 0 | - | 4.49 | 58,024 |
| Geography by Picture - N | 0 | - | 4.45 | 42,037 |
| Geography by Picture - R | 0 | - | 4.55 | 40,869 |
| Geography by Picture - T | 0 | - | 4.54 | 57,654 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,380 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 531,341 |
| Random Logos Quiz | 0 | - | 4.32 | 206,900 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,050 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,102 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,694 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,585 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,283 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,503 |
| Countries with the Most Wolves | 0 | - | 4.92 | 106,974 |
| Animals in World History | 0 | - | 4.74 | 44,198 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,433 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,466 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,170 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,589 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,379 |
| Elements by Picture | 0 | - | 4.28 | 69,501 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,144 |
| Islands by Picture | 0 | - | 4.29 | 105,793 |
| Name that Object #1 | 0 | - | 3.56 | 96,282 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,012 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,443 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,382 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,797 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,740 |
| International Footballers by Picture | 0 | - | 4.50 | 54,615 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,390 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,518 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,250 |
| Geography by Picture - A | 0 | - | 4.39 | 60,029 |
| Geography by Picture - D | 0 | - | 4.15 | 45,474 |
| Geography by Picture - F | 0 | - | 4.31 | 50,813 |
| Geography by Picture - G | 0 | - | 4.38 | 47,776 |
| Geography by Picture - J | 0 | - | 4.16 | 38,325 |
| Geography by Picture - K | 0 | - | 4.28 | 33,003 |
| Geography by Picture - C | 0 | - | 4.31 | 56,894 |
| Geography by Picture - L | 0 | - | 4.37 | 58,735 |
| Geography by Picture - M | 0 | - | 4.14 | 40,337 |
| Geography by Picture - P | 0 | - | 4.24 | 42,290 |
| Geography by Picture - S | 0 | - | 4.38 | 46,899 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,162 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,353 |
| Flag Maths | 0 | - | 4.78 | 57,666 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 128,972 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,959 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,620 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,561 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,624 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,781 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,298 |
| Soccer Team Logos | 0 | - | 4.26 | 370,365 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,399,716 |
| Ultimate Car Logos Quiz | 0 | - | 4.79 | 175,812 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 258,971 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,503 |
| Movie Logos | 0 | - | 4.33 | 235,584 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,670 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,115 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,158 |
| History by Picture - A | 0 | - | 4.25 | 45,428 |
| History by Picture - B | 0 | - | 4.40 | 48,540 |
| History by Picture - C | 0 | - | 4.36 | 54,043 |
| History by Picture - F | 0 | - | 4.35 | 37,555 |
| History by Picture - G | 0 | - | 4.40 | 41,812 |
| History by Picture - D | 0 | - | 4.29 | 43,974 |
| History by Picture - E | 0 | - | 4.27 | 43,596 |
| History by Picture - H | 0 | - | 4.37 | 36,507 |
| History by Picture - K | 0 | - | 4.35 | 33,079 |
| History by Picture - M | 0 | - | 4.17 | 35,885 |
| History by Picture - N | 0 | - | 4.40 | 40,965 |
| History by Picture - O | 0 | - | 4.39 | 36,004 |
| History by Picture - T | 0 | - | 4.20 | 33,061 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,799 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,595 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,584 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,497 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,762 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,761 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,790 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,115 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,408 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,578 |
| Musical Instruments by Picture #1 | 0 | - | 4.53 | 267,806 |
| Flowers by Picture | 0 | - | 4.46 | 104,991 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,517 |
| Name that Object #2 | 0 | - | 3.64 | 15,311 |
| Authors by Picture | 0 | - | 4.48 | 25,387 |
| Name that Object #3 | 0 | - | 3.93 | 14,295 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,375 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 54,984 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,116 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,292 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,359 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,375 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 69,977 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,087 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,902 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,203 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 78,945 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,885 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,510 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,900 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,507 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 157,918 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,341 |
| Musicians by Picture #1 | 0 | - | 4.39 | 106,968 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,184 |
| Musicians by Picture #4 | 0 | - | 4.07 | 63,956 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,270 |
| Emoji Flags | 0 | - | 4.35 | 43,794 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,730 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,436 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,057 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,218 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,701 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,045 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,658 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 392,841 |
| Airline Logos | 0 | - | 4.45 | 139,885 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 246,801 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 157,688 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,602 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,584 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,110 |
| Brand Logos That Start With C | 0 | - | 4.17 | 48,965 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,260 |
| Pictures by Letter - G | 0 | - | 4.14 | 27,892 |
