| Birds by Picture #1 | 0 | - | 4.47 | 41,123 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,850 |
| Birds by Picture #2 | 0 | - | 4.33 | 35,951 |
| Birds by Picture #3 | 0 | - | 4.24 | 32,851 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,673 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,245 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,923 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,117 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,094 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,914 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,774 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,904 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,873 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,410 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,315 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,594 |
| Animals by Skeleton Image | 0 | - | 4.80 | 45,994 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,739 |
| Name that Bug | 0 | - | 4.12 | 45,451 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,451 |
| Fish by Picture #2 | 0 | - | 4.08 | 18,404 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,586 |
| Empires by Maps | 0 | - | 4.98 | 118,550 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,458 |
| Animals of Australia | 0 | - | 4.52 | 42,156 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,997 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,230 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,791 |
| Play-Doh People from History | 0 | - | 4.99 | 93,870 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,321 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,750 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,517 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,043 |
| All Country Flags of the World | 0 | - | 5.00 | 3,603,281 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,526,552 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,498 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,745 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,825 |
| Flags with Crescents | 0 | - | 4.98 | 167,594 |
| Country Flag Trivia | 0 | - | 4.81 | 55,949 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,444 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,474 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,934 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,480 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,394 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,054 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,593 |
| National Football Team Logos | 0 | - | 4.84 | 178,711 |
| Movies with Animals in the Title #1 | 0 | - | 4.21 | 183,055 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 108,012 |
| National Animals | 0 | - | 4.24 | 89,158 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,617 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,317 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,422 |
| Years in History by Picture | 0 | - | 4.44 | 35,120 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,244 |
| Flags to Languages | 0 | - | 4.95 | 172,511 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,258 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,768 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,155 |
| Disney Animals | 0 | - | 4.27 | 238,661 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,416 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,216 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,290 |
| Fruits by Picture | 0 | - | 4.20 | 804,696 |
| Old Movies by Picture | 0 | - | 4.51 | 24,812 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,687 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,549 |
| Geography by Picture - B | 0 | - | 4.42 | 55,420 |
| Geography by Picture - H | 0 | - | 4.49 | 58,052 |
| Geography by Picture - N | 0 | - | 4.45 | 42,051 |
| Geography by Picture - R | 0 | - | 4.55 | 40,881 |
| Geography by Picture - T | 0 | - | 4.54 | 57,681 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,464 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 532,223 |
| Random Logos Quiz | 0 | - | 4.32 | 207,048 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,301 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,129 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,727 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,620 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,309 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,526 |
| Animals in the Bible | 0 | - | 4.83 | 35,829 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,040 |
| Animals in World History | 0 | - | 4.74 | 44,222 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,497 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,474 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,190 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,632 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,416 |
| Elements by Picture | 0 | - | 4.28 | 69,556 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,162 |
| Islands by Picture | 0 | - | 4.29 | 105,911 |
| Name that Object #1 | 0 | - | 3.56 | 96,307 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,051 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,553 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,683 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,850 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,777 |
| International Footballers by Picture | 0 | - | 4.50 | 54,765 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,673 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,654 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,302 |
| Geography by Picture - A | 0 | - | 4.39 | 60,056 |
| Geography by Picture - D | 0 | - | 4.15 | 45,497 |
| Geography by Picture - F | 0 | - | 4.31 | 50,831 |
| Geography by Picture - G | 0 | - | 4.38 | 47,793 |
| Geography by Picture - J | 0 | - | 4.16 | 38,337 |
| Geography by Picture - K | 0 | - | 4.28 | 33,017 |
| Geography by Picture - C | 0 | - | 4.31 | 56,912 |
| Geography by Picture - L | 0 | - | 4.37 | 58,765 |
| Geography by Picture - M | 0 | - | 4.14 | 40,348 |
| Geography by Picture - P | 0 | - | 4.24 | 42,302 |
| Geography by Picture - S | 0 | - | 4.38 | 46,913 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,405 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,487 |
| Flag Maths | 0 | - | 4.78 | 57,676 |
| Satellite Images #1 | 0 | - | 4.46 | 129,018 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,991 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,656 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,568 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,654 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,812 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,375 |
| Soccer Team Logos | 0 | - | 4.26 | 370,892 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,402,588 |
| Ultimate Car Logos Quiz | 0 | - | 4.79 | 176,325 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 259,304 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,690 |
| Movie Logos | 0 | - | 4.33 | 235,955 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,785 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,205 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,285 |
| History by Picture - A | 0 | - | 4.25 | 45,466 |
| History by Picture - B | 0 | - | 4.40 | 48,593 |
| History by Picture - C | 0 | - | 4.36 | 54,089 |
| History by Picture - F | 0 | - | 4.35 | 37,589 |
| History by Picture - G | 0 | - | 4.40 | 41,856 |
| History by Picture - D | 0 | - | 4.29 | 44,014 |
| History by Picture - E | 0 | - | 4.27 | 43,633 |
| History by Picture - H | 0 | - | 4.37 | 36,548 |
| History by Picture - K | 0 | - | 4.35 | 33,111 |
| History by Picture - M | 0 | - | 4.17 | 35,916 |
| History by Picture - N | 0 | - | 4.40 | 41,004 |
| History by Picture - O | 0 | - | 4.39 | 36,044 |
| History by Picture - T | 0 | - | 4.20 | 33,101 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,853 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,625 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,607 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,518 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,775 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,798 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,867 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,161 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,480 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,670 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 267,937 |
| Flowers by Picture | 0 | - | 4.46 | 105,015 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,536 |
| Name that Object #2 | 0 | - | 3.64 | 15,326 |
| Authors by Picture | 0 | - | 4.48 | 25,395 |
| Name that Object #3 | 0 | - | 3.93 | 14,306 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,483 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,115 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,203 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,381 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,425 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,460 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,026 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,135 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,930 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,262 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,001 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,948 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,606 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,931 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,683 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 158,058 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,443 |
| Musicians by Picture #1 | 0 | - | 4.39 | 107,166 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,322 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,067 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,341 |
| Emoji Flags | 0 | - | 4.35 | 43,818 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,938 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,477 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,158 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,244 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,755 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,110 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,674 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 393,035 |
| Airline Logos | 0 | - | 4.45 | 139,971 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 246,960 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 157,837 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,731 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,680 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,202 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,025 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,282 |
