| Animals by Skeleton Image | 0 | - | 4.81 | 46,586 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,497 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,356 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,713 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,283 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,914 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,901 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,232 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,251 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,597 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,525 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,200 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,170 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,292 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,589 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,306 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,334 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,776 |
| Animals in World History | 0 | - | 4.74 | 44,539 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,157 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,580 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,732 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,955 |
| Empires by Maps | 0 | - | 4.98 | 120,710 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,658 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,003 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,906 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,706 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,180 |
| Fish by Picture #2 | 0 | - | 4.07 | 18,592 |
| Flowers by Picture | 0 | - | 4.46 | 105,693 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,733 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,372 |
| North American Bird-Named Teams | 0 | - | 4.44 | 67,897 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,596 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,309 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,532 |
| Play-Doh People from History | 0 | - | 4.99 | 94,911 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,132 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,473 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,616 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,675 |
| All Country Flags of the World | 0 | - | 5.00 | 3,671,820 |
| Extinct Animals | 0 | - | 4.16 | 27,517 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,395 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,265 |
| Animals in the News | 0 | - | 4.37 | 26,800 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,368 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,314 |
| Megadiverse Countries | 0 | - | 4.96 | 134,948 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,499 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,566 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,892 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,067 |
| Where Are These Doors? | 0 | - | 4.45 | 30,039 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,445 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,255 |
| Asian Countries with NO Wolves | 0 | - | 4.60 | 18,862 |
| Old World... or New World? | 0 | - | 4.66 | 21,355 |
| Years in History by Picture | 0 | - | 4.44 | 35,564 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,599 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,640 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,007 |
| Flags with Crescents | 0 | - | 4.98 | 169,818 |
| Country Flag Trivia | 0 | - | 4.81 | 57,177 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,956 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,654 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,592 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,382 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,337 |
| Badly Drawn Flags #1 | 0 | - | 4.99 | 60,588 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,928 |
| Real vs. Fake Flags | 0 | - | 4.98 | 124,465 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 181,141 |
| National Football Team Logos | 0 | - | 4.85 | 180,574 |
| Merged Company Logos #2 | 0 | - | 4.75 | 77,667 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,275 |
| Largest Land Animals of Africa | 0 | - | 4.36 | 12,762 |
| Top Countries for Shark Attacks | 0 | - | 4.47 | 45,847 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,867 |
| Countries with Fjords | 0 | - | 4.94 | 100,972 |
| Name that Object #1 | 0 | - | 3.57 | 96,518 |
| Flags to Languages | 0 | - | 4.95 | 173,778 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,832 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,617 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,981 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,277 |
| Terrestrial Biomes - Map Quiz | 0 | - | 4.99 | 21,325 |
| Fruits by Picture | 0 | - | 4.19 | 807,630 |
| Old Movies by Picture | 0 | - | 4.51 | 25,122 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,083 |
| Geography by Picture - B | 0 | - | 4.42 | 55,647 |
| Geography by Picture - H | 0 | - | 4.50 | 58,264 |
| Geography by Picture - N | 0 | - | 4.45 | 42,230 |
| Geography by Picture - R | 0 | - | 4.56 | 41,051 |
| Geography by Picture - T | 0 | - | 4.54 | 57,879 |
| Random Logos Quiz | 0 | - | 4.31 | 208,617 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,315 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,477 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,097 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,041 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,641 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,851 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,220 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,846 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,097 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 539,867 |
| Largest Land Animals of Asia | 0 | - | 3.64 | 8,306 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,699 |
| Countries With No Rivers | 0 | - | 4.96 | 76,863 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,204 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,042 |
| North Sea Countries | 0 | - | 4.92 | 87,440 |
| Black Sea Countries | 0 | - | 4.87 | 60,628 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,411 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,514 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,255 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,398 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,010 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,741 |
| Elements by Picture | 0 | - | 4.27 | 70,015 |
| Name that Object #2 | 0 | - | 3.64 | 15,461 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,356 |
| Islands by Picture | 0 | - | 4.28 | 107,115 |
| Name that Object #3 | 0 | - | 3.93 | 14,415 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,291 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,954 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,286 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,262 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,056 |
| International Footballers by Picture | 0 | - | 4.50 | 55,751 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,804 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,822 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,888 |
| 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 | 57,111 |
| Geography by Picture - L | 0 | - | 4.37 | 59,010 |
| 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 | 47,069 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,707 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,699 |
| Flag Maths | 0 | - | 4.64 | 57,775 |
| Satellite Images #1 | 0 | - | 4.47 | 129,422 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,349 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,955 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,971 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,015 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,091 |
| Soccer Team Logos | 0 | - | 4.26 | 375,035 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,425,614 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 262,288 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,181 |
| Movie Logos | 0 | - | 4.33 | 238,797 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,489 |
| Pictures by Letter - E | 0 | - | 3.51 | 34,528 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,217 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,611 |
| Pictures by Letter - F | 0 | - | 4.18 | 29,095 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,500 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,349 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,813 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,168 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,429 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,538 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,099 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,824 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,734 |
| History by Picture - A | 0 | - | 4.26 | 45,880 |
| History by Picture - B | 0 | - | 4.40 | 49,064 |
| History by Picture - C | 0 | - | 4.36 | 54,567 |
| History by Picture - F | 0 | - | 4.35 | 37,956 |
| History by Picture - G | 0 | - | 4.40 | 42,209 |
| History by Picture - D | 0 | - | 4.29 | 44,385 |
| History by Picture - E | 0 | - | 4.25 | 44,000 |
| History by Picture - H | 0 | - | 4.37 | 36,853 |
| History by Picture - K | 0 | - | 4.35 | 33,414 |
| History by Picture - M | 0 | - | 4.17 | 36,199 |
| History by Picture - N | 0 | - | 4.40 | 41,325 |
| History by Picture - O | 0 | - | 4.39 | 36,371 |
| History by Picture - T | 0 | - | 4.20 | 33,362 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,357 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 150,568 |
| Words Containing Animals #1 | 0 | - | 4.21 | 43,539 |
| Words Containing Animals #2 | 0 | - | 4.09 | 34,455 |
| Animal Adjectives | 0 | - | 4.77 | 60,040 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,311 |
| Animals: No Vowels #1 | 0 | - | 4.56 | 64,146 |
| Bird in the Answers | 0 | - | 4.11 | 33,742 |
| Bird Knowledge #2 | 0 | - | 4.42 | 14,196 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,532 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,750 |
| African Great Lakes | 0 | - | 4.82 | 66,322 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,592 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,517 |
