| Birds by Picture #1 | 0 | - | 4.47 | 41,586 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,342 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,338 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,155 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,737 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,604 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,202 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,745 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,501 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,397 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,088 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,109 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,205 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,900 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,121 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,696 |
| Animals by Skeleton Image | 0 | - | 4.81 | 46,429 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,817 |
| Name that Bug | 0 | - | 4.12 | 45,551 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,587 |
| Fish by Picture #2 | 0 | - | 4.06 | 18,556 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,702 |
| Empires by Maps | 0 | - | 4.98 | 120,254 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,397 |
| Animals of Australia | 0 | - | 4.52 | 42,308 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,236 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,293 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,167 |
| Play-Doh People from History | 0 | - | 4.99 | 94,698 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,964 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,311 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,472 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,112 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,535 |
| All Country Flags of the World | 0 | - | 5.00 | 3,656,577 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,535,968 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,276 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,020 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,447 |
| Flags with Crescents | 0 | - | 4.98 | 169,327 |
| Country Flag Trivia | 0 | - | 4.81 | 56,931 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,609 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,381 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,238 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,193 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,136 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,724 |
| Real vs. Fake Flags | 0 | - | 4.98 | 124,049 |
| National Football Team Logos | 0 | - | 4.85 | 180,194 |
| Movies with Animals in the Title #1 | 0 | - | 4.20 | 183,630 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 108,305 |
| National Animals | 0 | - | 4.24 | 89,645 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,740 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,110 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,139 |
| Years in History by Picture | 0 | - | 4.44 | 35,477 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,834 |
| Flags to Languages | 0 | - | 4.95 | 173,527 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,895 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,486 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,479 |
| Disney Animals | 0 | - | 4.27 | 239,703 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,179 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,519 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,996 |
| Fruits by Picture | 0 | - | 4.19 | 807,017 |
| Old Movies by Picture | 0 | - | 4.51 | 25,075 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,991 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,327 |
| Geography by Picture - B | 0 | - | 4.42 | 55,587 |
| Geography by Picture - H | 0 | - | 4.50 | 58,210 |
| Geography by Picture - N | 0 | - | 4.45 | 42,189 |
| Geography by Picture - R | 0 | - | 4.56 | 41,012 |
| Geography by Picture - T | 0 | - | 4.54 | 57,824 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 62,959 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 538,402 |
| Random Logos Quiz | 0 | - | 4.31 | 208,304 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 114,926 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,399 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,020 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,951 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,573 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,785 |
| Animals in the Bible | 0 | - | 4.83 | 36,524 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,744 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,986 |
| Animals in World History | 0 | - | 4.74 | 44,463 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,430 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,334 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,935 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,674 |
| Elements by Picture | 0 | - | 4.27 | 69,901 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,303 |
| Islands by Picture | 0 | - | 4.29 | 106,844 |
| Name that Object #1 | 0 | - | 3.57 | 96,481 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,252 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,340 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,712 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,172 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,000 |
| International Footballers by Picture | 0 | - | 4.50 | 55,537 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,377 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,562 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,771 |
| Geography by Picture - A | 0 | - | 4.39 | 60,230 |
| Geography by Picture - D | 0 | - | 4.15 | 45,645 |
| Geography by Picture - F | 0 | - | 4.31 | 50,984 |
| Geography by Picture - G | 0 | - | 4.38 | 47,936 |
| Geography by Picture - J | 0 | - | 4.16 | 38,454 |
| Geography by Picture - K | 0 | - | 4.29 | 33,120 |
| Geography by Picture - C | 0 | - | 4.31 | 57,054 |
| Geography by Picture - L | 0 | - | 4.37 | 58,938 |
| Geography by Picture - M | 0 | - | 4.14 | 40,446 |
| Geography by Picture - P | 0 | - | 4.24 | 42,425 |
| Geography by Picture - S | 0 | - | 4.38 | 47,033 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,217 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,441 |
| Flag Maths | 0 | - | 4.64 | 57,754 |
| Satellite Images #1 | 0 | - | 4.47 | 129,334 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,272 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,890 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,686 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,894 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,964 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,929 |
| Soccer Team Logos | 0 | - | 4.26 | 374,151 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,420,804 |
| Ultimate Car Logos Quiz | 0 | - | 4.80 | 180,066 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 261,671 |
| Video Game Logos Quiz | 0 | - | 4.40 | 183,860 |
| Movie Logos | 0 | - | 4.33 | 238,234 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,734 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,208 |
| History by Picture - A | 0 | - | 4.26 | 45,789 |
| History by Picture - B | 0 | - | 4.40 | 48,948 |
| History by Picture - C | 0 | - | 4.36 | 54,473 |
| History by Picture - F | 0 | - | 4.35 | 37,881 |
| History by Picture - G | 0 | - | 4.40 | 42,141 |
| History by Picture - D | 0 | - | 4.29 | 44,311 |
| History by Picture - E | 0 | - | 4.25 | 43,931 |
| History by Picture - H | 0 | - | 4.37 | 36,795 |
| History by Picture - K | 0 | - | 4.35 | 33,359 |
| History by Picture - M | 0 | - | 4.17 | 36,146 |
| History by Picture - N | 0 | - | 4.40 | 41,257 |
| History by Picture - O | 0 | - | 4.39 | 36,316 |
| History by Picture - T | 0 | - | 4.20 | 33,313 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,245 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,950 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,851 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,667 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 106,182 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,080 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,331 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,415 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,049 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,246 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 268,838 |
| Flowers by Picture | 0 | - | 4.46 | 105,616 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,727 |
| Name that Object #2 | 0 | - | 3.64 | 15,440 |
| Authors by Picture | 0 | - | 4.48 | 25,527 |
| Name that Object #3 | 0 | - | 3.93 | 14,394 |
| Fruit and Vegetable Emojis | 0 | - | 4.44 | 88,248 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,705 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,763 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,905 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 58,818 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,135 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,393 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,410 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,172 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,687 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,394 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,387 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,523 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,149 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 239,216 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,040 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,234 |
| Musicians by Picture #1 | 0 | - | 4.37 | 108,606 |
| Musicians by Picture #2 | 0 | - | 4.29 | 76,305 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,817 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,922 |
| Emoji Flags | 0 | - | 4.35 | 44,053 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,252 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,828 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,917 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,379 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,344 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,663 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,797 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 394,369 |
| Airline Logos | 0 | - | 4.45 | 140,634 |
| Fast Food Logos Quiz | 0 | - | 4.44 | 248,235 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 158,945 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,534 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,924 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,469 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,071 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,610 |
