| Animals by Skeleton Image | 0 | - | 4.81 | 46,566 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,481 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,334 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,693 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,273 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,902 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,881 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,217 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,242 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,588 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,508 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,185 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,165 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,282 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,584 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,304 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,315 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,774 |
| Animals in World History | 0 | - | 4.74 | 44,532 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,140 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,560 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,729 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,927 |
| Empires by Maps | 0 | - | 4.98 | 120,665 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,631 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,995 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,901 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,701 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,152 |
| Fish by Picture #2 | 0 | - | 4.07 | 18,583 |
| Flowers by Picture | 0 | - | 4.46 | 105,682 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,716 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,364 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,892 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,595 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,302 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,475 |
| Play-Doh People from History | 0 | - | 4.99 | 94,890 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,120 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,463 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,607 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,667 |
| All Country Flags of the World | 0 | - | 5.00 | 3,670,388 |
| Extinct Animals | 0 | - | 4.16 | 27,514 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,391 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,265 |
| Animals in the News | 0 | - | 4.37 | 26,798 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,361 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,312 |
| Megadiverse Countries | 0 | - | 4.96 | 134,933 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,227 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,431 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,798 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,057 |
| Where Are These Doors? | 0 | - | 4.45 | 30,030 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,439 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,247 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,857 |
| Old World... or New World? | 0 | - | 4.66 | 21,351 |
| Years in History by Picture | 0 | - | 4.44 | 35,557 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,584 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,636 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,986 |
| Flags with Crescents | 0 | - | 4.98 | 169,773 |
| Country Flag Trivia | 0 | - | 4.81 | 57,151 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,922 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,621 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,560 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,360 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,313 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,573 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,902 |
| Real vs. Fake Flags | 0 | - | 4.98 | 124,430 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 181,027 |
| National Football Team Logos | 0 | - | 4.85 | 180,526 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,650 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,273 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,759 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,838 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,862 |
| Countries with Fjords | 0 | - | 4.94 | 100,961 |
| Name that Object #1 | 0 | - | 3.57 | 96,515 |
| Flags to Languages | 0 | - | 4.95 | 173,745 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,831 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,604 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,975 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,262 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,299 |
| Fruits by Picture | 0 | - | 4.19 | 807,574 |
| Old Movies by Picture | 0 | - | 4.51 | 25,118 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,073 |
| Geography by Picture - B | 0 | - | 4.42 | 55,640 |
| Geography by Picture - H | 0 | - | 4.50 | 58,258 |
| Geography by Picture - N | 0 | - | 4.45 | 42,225 |
| Geography by Picture - R | 0 | - | 4.56 | 41,048 |
| Geography by Picture - T | 0 | - | 4.54 | 57,875 |
| Random Logos Quiz | 0 | - | 4.31 | 208,580 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,269 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,467 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,085 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,031 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,628 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,846 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,205 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,804 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,081 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 539,705 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,305 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,693 |
| Countries With No Rivers | 0 | - | 4.96 | 76,849 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,191 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,038 |
| North Sea Countries | 0 | - | 4.92 | 87,426 |
| Black Sea Countries | 0 | - | 4.87 | 60,626 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,404 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,502 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,252 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,391 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,002 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,732 |
| Elements by Picture | 0 | - | 4.27 | 70,004 |
| Name that Object #2 | 0 | - | 3.64 | 15,458 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,347 |
| Islands by Picture | 0 | - | 4.28 | 107,092 |
| Name that Object #3 | 0 | - | 3.93 | 14,413 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,289 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,929 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,270 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,253 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,049 |
| International Footballers by Picture | 0 | - | 4.50 | 55,732 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,768 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,800 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,871 |
| Geography by Picture - A | 0 | - | 4.39 | 60,291 |
| Geography by Picture - D | 0 | - | 4.15 | 45,682 |
| Geography by Picture - F | 0 | - | 4.31 | 51,036 |
| Geography by Picture - G | 0 | - | 4.39 | 47,974 |
| Geography by Picture - J | 0 | - | 4.16 | 38,489 |
| Geography by Picture - K | 0 | - | 4.29 | 33,154 |
| Geography by Picture - C | 0 | - | 4.31 | 57,105 |
| Geography by Picture - L | 0 | - | 4.37 | 59,001 |
| Geography by Picture - M | 0 | - | 4.14 | 40,485 |
| Geography by Picture - P | 0 | - | 4.24 | 42,455 |
| Geography by Picture - S | 0 | - | 4.38 | 47,066 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,674 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,674 |
| Flag Maths | 0 | - | 4.64 | 57,774 |
| Satellite Images #1 | 0 | - | 4.47 | 129,418 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,342 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,948 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,960 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,010 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,071 |
| Soccer Team Logos | 0 | - | 4.26 | 374,913 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,425,024 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 262,229 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,148 |
| Movie Logos | 0 | - | 4.33 | 238,719 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,458 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,523 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,209 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,604 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,089 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,493 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,341 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,805 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,163 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,424 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,529 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,093 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,816 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,729 |
| History by Picture - A | 0 | - | 4.26 | 45,870 |
| History by Picture - B | 0 | - | 4.40 | 49,050 |
| History by Picture - C | 0 | - | 4.36 | 54,553 |
| History by Picture - F | 0 | - | 4.35 | 37,941 |
| History by Picture - G | 0 | - | 4.40 | 42,196 |
| History by Picture - D | 0 | - | 4.29 | 44,371 |
| History by Picture - E | 0 | - | 4.25 | 43,991 |
| History by Picture - H | 0 | - | 4.37 | 36,845 |
| History by Picture - K | 0 | - | 4.35 | 33,408 |
| History by Picture - M | 0 | - | 4.17 | 36,191 |
| History by Picture - N | 0 | - | 4.40 | 41,313 |
| History by Picture - O | 0 | - | 4.39 | 36,364 |
| History by Picture - T | 0 | - | 4.20 | 33,354 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,351 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,541 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,537 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,454 |
| Animal Adjectives | 0 | - | 4.77 | 60,035 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,309 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,138 |
| Bird in the Answers | 0 | - | 4.11 | 33,733 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,193 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,530 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,738 |
| African Great Lakes | 0 | - | 4.82 | 66,311 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,580 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,513 |
