| Animals by Skeleton Image | 0 | - | 4.81 | 46,809 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,746 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,831 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,906 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,415 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,247 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,133 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,430 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 87,443 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,783 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,738 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,398 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,254 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,448 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,746 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,355 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,520 |
| Animals in World History | 0 | - | 4.74 | 44,631 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,835 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,441 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,996 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,790 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,464 |
| Empires by Maps | 0 | - | 4.98 | 121,458 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,034 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,426 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,105 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,004 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,780 |
| Fish by Picture #2 | 0 | - | 4.09 | 18,670 |
| Flowers by Picture | 0 | - | 4.46 | 105,810 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,944 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,574 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,968 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,644 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,445 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,066 |
| Play-Doh People from History | 0 | - | 4.99 | 95,331 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,423 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,839 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,917 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,936 |
| All Country Flags of the World | 0 | - | 5.00 | 3,699,337 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,341 |
| Extinct Animals | 0 | - | 4.16 | 27,555 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,455 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,290 |
| Animals in the News | 0 | - | 4.37 | 26,823 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,506 |
| Megadiverse Countries | 0 | - | 4.96 | 135,167 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,265 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,900 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,549 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,191 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,613 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,402 |
| Animals - Taxonomy to Common Name | 0 | - | 4.81 | 28,418 |
| Old World... or New World? | 0 | - | 4.66 | 21,408 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,963 |
| Years in History by Picture | 0 | - | 4.44 | 35,694 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,882 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,735 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,272 |
| Flags with Crescents | 0 | - | 4.98 | 170,914 |
| Country Flag Trivia | 0 | - | 4.81 | 57,756 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,579 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,155 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,255 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,726 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,761 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,880 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,320 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,381 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 183,080 |
| National Football Team Logos | 0 | - | 4.85 | 181,355 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,961 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,303 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,792 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,905 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,985 |
| Countries with Fjords | 0 | - | 4.94 | 101,201 |
| Name that Object #1 | 0 | - | 3.57 | 96,573 |
| Flags to Languages | 0 | - | 4.95 | 174,260 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,870 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,896 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,571 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,138 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,644 |
| Fruits by Picture | 0 | - | 4.19 | 808,658 |
| Old Movies by Picture | 0 | - | 4.51 | 25,206 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,247 |
| Geography by Picture - B | 0 | - | 4.42 | 55,736 |
| Geography by Picture - H | 0 | - | 4.50 | 58,338 |
| Geography by Picture - N | 0 | - | 4.45 | 42,306 |
| Geography by Picture - R | 0 | - | 4.56 | 41,112 |
| Geography by Picture - T | 0 | - | 4.54 | 57,958 |
| Random Logos Quiz | 0 | - | 4.33 | 209,121 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,994 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,582 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,222 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,184 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,753 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,950 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,576 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 338,752 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,323 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 542,722 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,334 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,804 |
| Countries With No Rivers | 0 | - | 4.96 | 77,054 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,742 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,126 |
| North Sea Countries | 0 | - | 4.92 | 87,616 |
| Black Sea Countries | 0 | - | 4.87 | 60,703 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,517 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,623 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,336 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,468 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,181 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,890 |
| Elements by Picture | 0 | - | 4.27 | 70,210 |
| Name that Object #2 | 0 | - | 3.64 | 15,494 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,468 |
| Islands by Picture | 0 | - | 4.28 | 107,551 |
| Name that Object #3 | 0 | - | 3.93 | 14,445 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,417 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,474 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,455 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,527 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,157 |
| International Footballers by Picture | 0 | - | 4.51 | 56,193 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,611 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,299 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,086 |
| Geography by Picture - A | 0 | - | 4.39 | 60,386 |
| Geography by Picture - D | 0 | - | 4.15 | 45,753 |
| Geography by Picture - F | 0 | - | 4.31 | 51,132 |
| Geography by Picture - G | 0 | - | 4.39 | 48,048 |
| Geography by Picture - J | 0 | - | 4.16 | 38,562 |
| Geography by Picture - K | 0 | - | 4.29 | 33,218 |
| Geography by Picture - C | 0 | - | 4.31 | 57,189 |
| Geography by Picture - L | 0 | - | 4.37 | 59,094 |
| Geography by Picture - M | 0 | - | 4.14 | 40,550 |
| Geography by Picture - P | 0 | - | 4.24 | 42,530 |
| Geography by Picture - S | 0 | - | 4.38 | 47,146 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,623 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,197 |
| Flag Maths | 0 | - | 4.61 | 57,815 |
| Satellite Images #1 | 0 | - | 4.47 | 129,596 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,495 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,077 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,099 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,101 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,440 |
| Soccer Team Logos | 0 | - | 4.26 | 376,708 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,433,984 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,331 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,734 |
| Movie Logos | 0 | - | 4.33 | 239,817 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,933 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,610 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,336 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,709 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,211 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,562 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,420 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,885 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,249 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,528 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,614 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,170 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,892 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,811 |
| History by Picture - A | 0 | - | 4.26 | 46,049 |
| History by Picture - B | 0 | - | 4.40 | 49,228 |
| History by Picture - C | 0 | - | 4.36 | 54,761 |
| History by Picture - F | 0 | - | 4.35 | 38,102 |
| History by Picture - G | 0 | - | 4.40 | 42,344 |
| History by Picture - D | 0 | - | 4.29 | 44,553 |
| History by Picture - E | 0 | - | 4.25 | 44,139 |
| History by Picture - H | 0 | - | 4.37 | 36,993 |
| History by Picture - K | 0 | - | 4.35 | 33,534 |
| History by Picture - M | 0 | - | 4.17 | 36,314 |
| History by Picture - N | 0 | - | 4.40 | 41,455 |
| History by Picture - O | 0 | - | 4.39 | 36,483 |
| History by Picture - T | 0 | - | 4.20 | 33,475 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,567 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,926 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,597 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,485 |
| Animal Adjectives | 0 | - | 4.77 | 60,154 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,294 |
| Bird in the Answers | 0 | - | 4.11 | 33,899 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,227 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,592 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,917 |
| African Great Lakes | 0 | - | 4.82 | 66,788 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,830 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,689 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,668 |
