| Birds by Picture #1 | 0 | - | 4.47 | 41,092 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,817 |
| Birds by Picture #2 | 0 | - | 4.33 | 35,933 |
| Birds by Picture #3 | 0 | - | 4.24 | 32,826 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,553 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,220 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,906 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,085 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,066 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,878 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,757 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,888 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,846 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,372 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,275 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,587 |
| Animals by Skeleton Image | 0 | - | 4.80 | 45,966 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,738 |
| Name that Bug | 0 | - | 4.12 | 45,445 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,440 |
| Fish by Picture #2 | 0 | - | 4.08 | 18,393 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,496 |
| Empires by Maps | 0 | - | 4.98 | 118,398 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,399 |
| Animals of Australia | 0 | - | 4.52 | 42,144 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,986 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,223 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,718 |
| Play-Doh People from History | 0 | - | 4.99 | 93,824 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,288 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,718 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,484 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,012 |
| All Country Flags of the World | 0 | - | 5.00 | 3,600,127 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,972 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,217 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,528 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,792 |
| Flags with Crescents | 0 | - | 4.98 | 167,494 |
| Country Flag Trivia | 0 | - | 4.81 | 55,899 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,364 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,430 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,868 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,430 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,355 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,003 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,509 |
| National Football Team Logos | 0 | - | 4.84 | 178,592 |
| Movies with Animals in the Title #1 | 0 | - | 4.21 | 183,026 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 107,997 |
| National Animals | 0 | - | 4.24 | 89,142 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,588 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,297 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,405 |
| Years in History by Picture | 0 | - | 4.44 | 35,091 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,200 |
| Flags to Languages | 0 | - | 4.95 | 172,447 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,227 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,717 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,149 |
| Disney Animals | 0 | - | 4.27 | 238,587 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,378 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,192 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,237 |
| Fruits by Picture | 0 | - | 4.20 | 804,540 |
| Old Movies by Picture | 0 | - | 4.51 | 24,783 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,665 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,445 |
| Geography by Picture - B | 0 | - | 4.42 | 55,404 |
| Geography by Picture - H | 0 | - | 4.49 | 58,038 |
| Geography by Picture - N | 0 | - | 4.45 | 42,044 |
| Geography by Picture - R | 0 | - | 4.55 | 40,875 |
| Geography by Picture - T | 0 | - | 4.54 | 57,673 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,411 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 531,836 |
| Random Logos Quiz | 0 | - | 4.32 | 206,976 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,207 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,119 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,713 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,608 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,300 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,516 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,010 |
| Animals in World History | 0 | - | 4.74 | 44,208 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,463 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,468 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,178 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,611 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,396 |
| Elements by Picture | 0 | - | 4.28 | 69,533 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,155 |
| Islands by Picture | 0 | - | 4.29 | 105,853 |
| Name that Object #1 | 0 | - | 3.56 | 96,296 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,032 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,504 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,513 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,825 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,761 |
| International Footballers by Picture | 0 | - | 4.50 | 54,702 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,552 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,589 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,280 |
| Geography by Picture - A | 0 | - | 4.39 | 60,046 |
| Geography by Picture - D | 0 | - | 4.15 | 45,485 |
| Geography by Picture - F | 0 | - | 4.31 | 50,821 |
| Geography by Picture - G | 0 | - | 4.38 | 47,782 |
| Geography by Picture - J | 0 | - | 4.16 | 38,333 |
| Geography by Picture - K | 0 | - | 4.28 | 33,011 |
| Geography by Picture - C | 0 | - | 4.31 | 56,903 |
| Geography by Picture - L | 0 | - | 4.37 | 58,754 |
| Geography by Picture - M | 0 | - | 4.14 | 40,343 |
| Geography by Picture - P | 0 | - | 4.24 | 42,296 |
| Geography by Picture - S | 0 | - | 4.38 | 46,903 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,295 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,414 |
| Flag Maths | 0 | - | 4.78 | 57,672 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 128,996 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,975 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,640 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,565 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,642 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,801 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,343 |
| Soccer Team Logos | 0 | - | 4.26 | 370,660 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,401,162 |
| Ultimate Car Logos Quiz | 0 | - | 4.79 | 176,099 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 259,154 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,590 |
| Movie Logos | 0 | - | 4.33 | 235,763 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,733 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,167 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,209 |
| History by Picture - A | 0 | - | 4.25 | 45,448 |
| History by Picture - B | 0 | - | 4.40 | 48,562 |
| History by Picture - C | 0 | - | 4.36 | 54,066 |
| History by Picture - F | 0 | - | 4.35 | 37,573 |
| History by Picture - G | 0 | - | 4.40 | 41,836 |
| History by Picture - D | 0 | - | 4.29 | 43,993 |
| History by Picture - E | 0 | - | 4.27 | 43,614 |
| History by Picture - H | 0 | - | 4.37 | 36,531 |
| History by Picture - K | 0 | - | 4.35 | 33,093 |
| History by Picture - M | 0 | - | 4.17 | 35,904 |
| History by Picture - N | 0 | - | 4.40 | 40,983 |
| History by Picture - O | 0 | - | 4.39 | 36,025 |
| History by Picture - T | 0 | - | 4.20 | 33,087 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,827 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,608 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,595 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,506 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,767 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,781 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,829 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,141 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,447 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,624 |
| Musical Instruments by Picture #1 | 0 | - | 4.53 | 267,864 |
| Flowers by Picture | 0 | - | 4.46 | 105,000 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,525 |
| Name that Object #2 | 0 | - | 3.64 | 15,319 |
| Authors by Picture | 0 | - | 4.48 | 25,390 |
| Name that Object #3 | 0 | - | 3.93 | 14,298 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,432 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,032 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,161 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,343 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,387 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,417 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,003 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,117 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,916 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,235 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 78,978 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,923 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,559 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,915 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,613 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 158,005 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,397 |
| Musicians by Picture #1 | 0 | - | 4.39 | 107,075 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,262 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,022 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,313 |
| Emoji Flags | 0 | - | 4.35 | 43,807 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,842 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,455 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,112 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,233 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,728 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,076 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,667 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 392,945 |
| Airline Logos | 0 | - | 4.45 | 139,925 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 246,885 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 157,762 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,665 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,641 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,161 |
| Brand Logos That Start With C | 0 | - | 4.17 | 48,996 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,273 |
| Pictures by Letter - G | 0 | - | 4.14 | 27,906 |
