| Birds by Picture #1 | 0 | - | 4.47 | 41,133 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 54,859 |
| Birds by Picture #2 | 0 | - | 4.33 | 35,962 |
| Birds by Picture #3 | 0 | - | 4.24 | 32,861 |
| Animals by Close-up Image | 0 | - | 4.42 | 216,802 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,258 |
| Extinct Animals by Picture | 0 | - | 4.49 | 34,932 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,133 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,103 |
| Animals A-Z by Picture | 0 | - | 4.08 | 65,928 |
| Mammals by Picture #3 | 0 | - | 4.39 | 61,782 |
| Mammals by Picture #4 | 0 | - | 4.03 | 33,910 |
| Mammals by Picture #2 | 0 | - | 4.28 | 57,882 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,426 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 62,319 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,596 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,003 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,743 |
| Name that Bug | 0 | - | 4.12 | 45,455 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,451 |
| Fish by Picture #2 | 0 | - | 4.08 | 18,407 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,614 |
| Empires by Maps | 0 | - | 4.98 | 118,575 |
| Merged Company Logos #1 | 0 | - | 4.91 | 105,473 |
| Animals of Australia | 0 | - | 4.52 | 42,160 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,001 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,232 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 102,834 |
| Play-Doh People from History | 0 | - | 4.99 | 93,888 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,332 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 48,762 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 205,525 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,049 |
| All Country Flags of the World | 0 | - | 5.00 | 3,604,220 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,526,747 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,595 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,797 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,837 |
| Flags with Crescents | 0 | - | 4.98 | 167,628 |
| Country Flag Trivia | 0 | - | 4.81 | 55,971 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,464 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,493 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,949 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,492 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,408 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,068 |
| Real vs. Fake Flags | 0 | - | 4.98 | 122,626 |
| National Football Team Logos | 0 | - | 4.84 | 178,744 |
| Movies with Animals in the Title #1 | 0 | - | 4.21 | 183,060 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 108,021 |
| National Animals | 0 | - | 4.24 | 89,162 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,627 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,324 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,431 |
| Years in History by Picture | 0 | - | 4.44 | 35,125 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,255 |
| Flags to Languages | 0 | - | 4.95 | 172,543 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,263 |
| Merged Company Logos #2 | 0 | - | 4.75 | 76,790 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,155 |
| Disney Animals | 0 | - | 4.27 | 238,686 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,423 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,221 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,301 |
| Fruits by Picture | 0 | - | 4.20 | 804,742 |
| Old Movies by Picture | 0 | - | 4.51 | 24,818 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 46,694 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,574 |
| Geography by Picture - B | 0 | - | 4.42 | 55,423 |
| Geography by Picture - H | 0 | - | 4.49 | 58,055 |
| Geography by Picture - N | 0 | - | 4.45 | 42,054 |
| Geography by Picture - R | 0 | - | 4.55 | 40,883 |
| Geography by Picture - T | 0 | - | 4.54 | 57,684 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,478 |
| Car Logos Quiz #1 | 0 | - | 4.44 | 532,310 |
| Random Logos Quiz | 0 | - | 4.32 | 207,068 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 113,355 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,131 |
| Pictures by Letter - J | 0 | - | 4.31 | 39,730 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,624 |
| Pictures by Letter - D | 0 | - | 4.16 | 37,313 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,529 |
| Animals in the Bible | 0 | - | 4.83 | 35,844 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,050 |
| Animals in World History | 0 | - | 4.74 | 44,227 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,508 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,478 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,190 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,635 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,419 |
| Elements by Picture | 0 | - | 4.28 | 69,562 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,164 |
| Islands by Picture | 0 | - | 4.29 | 105,930 |
| Name that Object #1 | 0 | - | 3.56 | 96,311 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 24,055 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,559 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 102,716 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 40,853 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,780 |
| International Footballers by Picture | 0 | - | 4.50 | 54,788 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 282,712 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 106,668 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.50 | 50,311 |
| Geography by Picture - A | 0 | - | 4.39 | 60,057 |
| Geography by Picture - D | 0 | - | 4.15 | 45,499 |
| Geography by Picture - F | 0 | - | 4.31 | 50,833 |
| Geography by Picture - G | 0 | - | 4.38 | 47,795 |
| Geography by Picture - J | 0 | - | 4.16 | 38,339 |
| Geography by Picture - K | 0 | - | 4.28 | 33,018 |
| Geography by Picture - C | 0 | - | 4.31 | 56,916 |
| Geography by Picture - L | 0 | - | 4.37 | 58,768 |
| Geography by Picture - M | 0 | - | 4.14 | 40,349 |
| Geography by Picture - P | 0 | - | 4.24 | 42,304 |
| Geography by Picture - S | 0 | - | 4.38 | 46,915 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,446 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,503 |
| Flag Maths | 0 | - | 4.78 | 57,680 |
| Satellite Images #1 | 0 | - | 4.46 | 129,027 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,997 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,661 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,570 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,658 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,814 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,388 |
| Soccer Team Logos | 0 | - | 4.26 | 370,963 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,402,971 |
| Ultimate Car Logos Quiz | 0 | - | 4.79 | 176,390 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 259,334 |
| Video Game Logos Quiz | 0 | - | 4.40 | 182,720 |
| Movie Logos | 0 | - | 4.33 | 235,994 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,799 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,221 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,298 |
| History by Picture - A | 0 | - | 4.25 | 45,468 |
| History by Picture - B | 0 | - | 4.40 | 48,599 |
| History by Picture - C | 0 | - | 4.36 | 54,094 |
| History by Picture - F | 0 | - | 4.35 | 37,595 |
| History by Picture - G | 0 | - | 4.40 | 41,859 |
| History by Picture - D | 0 | - | 4.29 | 44,016 |
| History by Picture - E | 0 | - | 4.27 | 43,636 |
| History by Picture - H | 0 | - | 4.37 | 36,551 |
| History by Picture - K | 0 | - | 4.35 | 33,114 |
| History by Picture - M | 0 | - | 4.17 | 35,921 |
| History by Picture - N | 0 | - | 4.40 | 41,008 |
| History by Picture - O | 0 | - | 4.39 | 36,049 |
| History by Picture - T | 0 | - | 4.20 | 33,104 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 56,858 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,631 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,611 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,520 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,779 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,800 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,871 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,165 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,487 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,683 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 267,960 |
| Flowers by Picture | 0 | - | 4.46 | 105,020 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,537 |
| Name that Object #2 | 0 | - | 3.64 | 15,330 |
| Authors by Picture | 0 | - | 4.48 | 25,397 |
| Name that Object #3 | 0 | - | 3.93 | 14,308 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,494 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,154 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,213 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,392 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,435 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 164,465 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,033 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,138 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,932 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,264 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,011 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,965 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,622 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,936 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 237,709 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 158,072 |
| Name that Historical Figure #6 | 0 | - | 4.27 | 92,453 |
| Musicians by Picture #1 | 0 | - | 4.39 | 107,191 |
| Musicians by Picture #2 | 0 | - | 4.29 | 75,342 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,082 |
| Musicians by Picture #3 | 0 | - | 4.10 | 58,356 |
| Emoji Flags | 0 | - | 4.35 | 43,822 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,966 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,485 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,173 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,249 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,760 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,117 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,675 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 393,057 |
| Airline Logos | 0 | - | 4.45 | 139,982 |
| Fast Food Logos Quiz | 0 | - | 4.43 | 246,996 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 157,864 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,747 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,704 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,215 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,037 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,283 |
