| Birds by Picture #1 | 0 | - | 4.47 | 41,079 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,801 |
| Birds by Picture #2 | 0 | - | 4.33 | 35,925 |
| Birds by Picture #3 | 0 | - | 4.24 | 32,819 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,537 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,212 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,900 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,076 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,051 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,866 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,750 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,886 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,840 |
| Countries With The Most Bird Species | 0 | - | 4.92 | 32,343 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,264 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,584 |
| Animals by Skeleton Image | 0 | - | 4.80 | 45,955 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,735 |
| Name that Bug | 0 | - | 4.12 | 45,439 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,438 |
| Fish by Picture #2 | 0 | - | 4.08 | 18,389 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,454 |
| Empires by Maps | 0 | - | 4.98 | 118,334 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,372 |
| Animals of Australia | 0 | - | 4.52 | 42,141 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,977 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,222 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,689 |
| Play-Doh People from History | 0 | - | 4.99 | 93,799 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,271 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,704 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,466 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 60,992 |
| All Country Flags of the World | 0 | - | 5.00 | 3,598,617 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,731 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,098 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,449 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,775 |
| Flags with Crescents | 0 | - | 4.98 | 167,447 |
| Country Flag Trivia | 0 | - | 4.81 | 55,868 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,335 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,412 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,840 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,405 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,335 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 51,984 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,471 |
| National Football Team Logos | 0 | - | 4.84 | 178,546 |
| Movies with Animals in the Title #1 | 0 | - | 4.21 | 183,020 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 107,990 |
| National Animals | 0 | - | 4.24 | 89,137 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,577 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,285 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,395 |
| Years in History by Picture | 0 | - | 4.44 | 35,076 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,179 |
| Flags to Languages | 0 | - | 4.95 | 172,430 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,217 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,707 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 50,145 |
| Disney Animals | 0 | - | 4.27 | 238,551 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,366 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,186 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,216 |
| Fruits by Picture | 0 | - | 4.20 | 804,486 |
| Old Movies by Picture | 0 | - | 4.51 | 24,781 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,649 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,393 |
| Geography by Picture - B | 0 | - | 4.42 | 55,398 |
| Geography by Picture - H | 0 | - | 4.49 | 58,034 |
| Geography by Picture - N | 0 | - | 4.45 | 42,041 |
| Geography by Picture - R | 0 | - | 4.55 | 40,872 |
| Geography by Picture - T | 0 | - | 4.54 | 57,666 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,396 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 531,668 |
| Random Logos Quiz | 0 | - | 4.32 | 206,951 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,169 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,111 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,705 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,601 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,296 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,512 |
| Countries with the Most Wolves | 0 | - | 4.92 | 106,995 |
| Animals in World History | 0 | - | 4.74 | 44,203 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,449 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,467 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,176 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,602 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,389 |
| Elements by Picture | 0 | - | 4.28 | 69,521 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,150 |
| Islands by Picture | 0 | - | 4.29 | 105,829 |
| Name that Object #1 | 0 | - | 3.56 | 96,290 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,024 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,480 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,450 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,811 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,753 |
| International Footballers by Picture | 0 | - | 4.50 | 54,659 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,500 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,566 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,271 |
| Geography by Picture - A | 0 | - | 4.39 | 60,041 |
| Geography by Picture - D | 0 | - | 4.15 | 45,481 |
| Geography by Picture - F | 0 | - | 4.31 | 50,817 |
| Geography by Picture - G | 0 | - | 4.38 | 47,780 |
| Geography by Picture - J | 0 | - | 4.16 | 38,331 |
| Geography by Picture - K | 0 | - | 4.28 | 33,010 |
| Geography by Picture - C | 0 | - | 4.31 | 56,899 |
| Geography by Picture - L | 0 | - | 4.37 | 58,744 |
| Geography by Picture - M | 0 | - | 4.14 | 40,339 |
| Geography by Picture - P | 0 | - | 4.24 | 42,293 |
| Geography by Picture - S | 0 | - | 4.38 | 46,903 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,247 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,395 |
| Flag Maths | 0 | - | 4.78 | 57,669 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 128,989 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,969 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,634 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,562 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,634 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,795 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,325 |
| Soccer Team Logos | 0 | - | 4.26 | 370,566 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,400,730 |
| Ultimate Car Logos Quiz | 0 | - | 4.79 | 175,981 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 259,094 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,562 |
| Movie Logos | 0 | - | 4.33 | 235,699 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,711 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,150 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,193 |
| History by Picture - A | 0 | - | 4.25 | 45,443 |
| History by Picture - B | 0 | - | 4.40 | 48,553 |
| History by Picture - C | 0 | - | 4.36 | 54,059 |
| History by Picture - F | 0 | - | 4.35 | 37,569 |
| History by Picture - G | 0 | - | 4.40 | 41,830 |
| History by Picture - D | 0 | - | 4.29 | 43,990 |
| History by Picture - E | 0 | - | 4.27 | 43,609 |
| History by Picture - H | 0 | - | 4.37 | 36,524 |
| History by Picture - K | 0 | - | 4.35 | 33,089 |
| History by Picture - M | 0 | - | 4.17 | 35,898 |
| History by Picture - N | 0 | - | 4.40 | 40,976 |
| History by Picture - O | 0 | - | 4.39 | 36,013 |
| History by Picture - T | 0 | - | 4.20 | 33,076 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,815 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,604 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,589 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,503 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,765 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,775 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,816 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,127 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,434 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,611 |
| Musical Instruments by Picture #1 | 0 | - | 4.53 | 267,846 |
| Flowers by Picture | 0 | - | 4.46 | 104,998 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,523 |
| Name that Object #2 | 0 | - | 3.64 | 15,317 |
| Authors by Picture | 0 | - | 4.48 | 25,389 |
| Name that Object #3 | 0 | - | 3.93 | 14,296 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,409 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,026 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,142 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,327 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,379 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,396 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 69,994 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,103 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,911 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,221 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 78,965 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,905 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,538 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,908 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,577 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 157,971 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,377 |
| Musicians by Picture #1 | 0 | - | 4.39 | 107,035 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,233 |
| Musicians by Picture #4 | 0 | - | 4.07 | 63,992 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,297 |
| Emoji Flags | 0 | - | 4.35 | 43,803 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,799 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,448 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,090 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,229 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,716 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,060 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,664 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 392,897 |
| Airline Logos | 0 | - | 4.45 | 139,901 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 246,853 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 157,736 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,639 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,616 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,149 |
| Brand Logos That Start With C | 0 | - | 4.17 | 48,984 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,267 |
| Pictures by Letter - G | 0 | - | 4.14 | 27,900 |
