| Animals by Skeleton Image | 0 | - | 4.81 | 46,576 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,489 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,347 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,699 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,278 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,911 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,893 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,225 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,247 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,593 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,517 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,192 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,166 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,288 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,587 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,304 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,324 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,775 |
| Animals in World History | 0 | - | 4.74 | 44,535 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,148 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,569 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,731 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,938 |
| Empires by Maps | 0 | - | 4.98 | 120,695 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,646 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,000 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,904 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,704 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,170 |
| Fish by Picture #2 | 0 | - | 4.07 | 18,590 |
| Flowers by Picture | 0 | - | 4.46 | 105,690 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,724 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,367 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,895 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,596 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,304 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,507 |
| Play-Doh People from History | 0 | - | 4.99 | 94,900 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,130 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,469 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,610 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,671 |
| All Country Flags of the World | 0 | - | 5.00 | 3,671,168 |
| Extinct Animals | 0 | - | 4.16 | 27,516 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,392 |
| 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 | 15,314 |
| Megadiverse Countries | 0 | - | 4.96 | 134,941 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,376 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,492 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,843 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,060 |
| Where Are These Doors? | 0 | - | 4.45 | 30,034 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,440 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,250 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,859 |
| Old World... or New World? | 0 | - | 4.66 | 21,351 |
| Years in History by Picture | 0 | - | 4.44 | 35,561 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,595 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,639 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,995 |
| Flags with Crescents | 0 | - | 4.98 | 169,797 |
| Country Flag Trivia | 0 | - | 4.81 | 57,165 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,941 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,641 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,577 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,373 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,329 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,579 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,915 |
| Real vs. Fake Flags | 0 | - | 4.98 | 124,452 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 181,083 |
| National Football Team Logos | 0 | - | 4.85 | 180,550 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,656 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,274 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,760 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,844 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,862 |
| Countries with Fjords | 0 | - | 4.94 | 100,967 |
| Name that Object #1 | 0 | - | 3.57 | 96,516 |
| Flags to Languages | 0 | - | 4.95 | 173,766 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,831 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,613 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,980 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,271 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,311 |
| Fruits by Picture | 0 | - | 4.19 | 807,604 |
| Old Movies by Picture | 0 | - | 4.51 | 25,119 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,077 |
| Geography by Picture - B | 0 | - | 4.42 | 55,646 |
| Geography by Picture - H | 0 | - | 4.50 | 58,264 |
| Geography by Picture - N | 0 | - | 4.45 | 42,227 |
| Geography by Picture - R | 0 | - | 4.56 | 41,049 |
| Geography by Picture - T | 0 | - | 4.54 | 57,877 |
| Random Logos Quiz | 0 | - | 4.31 | 208,599 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,289 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,474 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,093 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,038 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,638 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,849 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,212 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,833 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,090 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 539,787 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,305 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,696 |
| Countries With No Rivers | 0 | - | 4.96 | 76,857 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,199 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,040 |
| North Sea Countries | 0 | - | 4.92 | 87,434 |
| Black Sea Countries | 0 | - | 4.87 | 60,626 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,406 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,507 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,254 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,394 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,007 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,737 |
| Elements by Picture | 0 | - | 4.27 | 70,012 |
| Name that Object #2 | 0 | - | 3.64 | 15,459 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,351 |
| Islands by Picture | 0 | - | 4.28 | 107,102 |
| 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 | 103,940 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,278 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,256 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,051 |
| International Footballers by Picture | 0 | - | 4.50 | 55,743 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,793 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,813 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,878 |
| Geography by Picture - A | 0 | - | 4.39 | 60,294 |
| Geography by Picture - D | 0 | - | 4.15 | 45,686 |
| Geography by Picture - F | 0 | - | 4.31 | 51,044 |
| Geography by Picture - G | 0 | - | 4.39 | 47,979 |
| Geography by Picture - J | 0 | - | 4.16 | 38,492 |
| Geography by Picture - K | 0 | - | 4.29 | 33,157 |
| Geography by Picture - C | 0 | - | 4.31 | 57,110 |
| Geography by Picture - L | 0 | - | 4.37 | 59,008 |
| Geography by Picture - M | 0 | - | 4.14 | 40,488 |
| Geography by Picture - P | 0 | - | 4.24 | 42,457 |
| Geography by Picture - S | 0 | - | 4.38 | 47,068 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,686 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,691 |
| Flag Maths | 0 | - | 4.64 | 57,774 |
| Satellite Images #1 | 0 | - | 4.47 | 129,421 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,348 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,953 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,966 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,014 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,081 |
| Soccer Team Logos | 0 | - | 4.26 | 374,976 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,425,377 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 262,262 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,167 |
| Movie Logos | 0 | - | 4.33 | 238,757 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,470 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,527 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,216 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,608 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,094 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,499 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,347 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,811 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,166 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,428 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,535 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,098 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,823 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,733 |
| History by Picture - A | 0 | - | 4.26 | 45,877 |
| History by Picture - B | 0 | - | 4.40 | 49,057 |
| History by Picture - C | 0 | - | 4.36 | 54,560 |
| History by Picture - F | 0 | - | 4.35 | 37,949 |
| History by Picture - G | 0 | - | 4.40 | 42,203 |
| History by Picture - D | 0 | - | 4.29 | 44,380 |
| History by Picture - E | 0 | - | 4.25 | 43,996 |
| History by Picture - H | 0 | - | 4.37 | 36,850 |
| History by Picture - K | 0 | - | 4.35 | 33,412 |
| History by Picture - M | 0 | - | 4.17 | 36,196 |
| History by Picture - N | 0 | - | 4.40 | 41,318 |
| History by Picture - O | 0 | - | 4.39 | 36,368 |
| History by Picture - T | 0 | - | 4.20 | 33,359 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,353 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,557 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,539 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,454 |
| Animal Adjectives | 0 | - | 4.77 | 60,037 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,311 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,141 |
| Bird in the Answers | 0 | - | 4.11 | 33,738 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,194 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,530 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,743 |
| African Great Lakes | 0 | - | 4.82 | 66,318 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,586 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,513 |
