| Pick a Picture - Animal Relations | 0 | - | 4.94 | 50,799 |
| Animals by Skeleton Image | 0 | - | 4.80 | 41,752 |
| Animals by Close-up Image | 0 | - | 4.41 | 209,830 |
| Mammals by Picture #3 | 0 | - | 4.43 | 58,468 |
| Aquatic Mammals by Picture | 0 | - | 4.42 | 42,453 |
| Extinct Animals by Picture | 0 | - | 4.48 | 32,703 |
| Mammals by Picture #1 | 0 | - | 4.73 | 86,638 |
| Countries with Wild Tigers | 0 | - | 4.97 | 130,432 |
| Countries with Wild Penguins | 0 | - | 4.93 | 94,879 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 82,633 |
| Animals A-Z by Picture | 0 | - | 4.11 | 62,814 |
| Mammals by Picture #4 | 0 | - | 4.05 | 32,218 |
| Mammals by Picture #2 | 0 | - | 4.29 | 55,347 |
| Animals by Range on a World Map | 0 | - | 4.97 | 22,618 |
| Reptile Picture Quiz | 0 | - | 4.30 | 13,616 |
| Countries with the Most Sheep | 0 | - | 4.87 | 85,261 |
| Fish by Picture #1 | 0 | - | 4.40 | 105,144 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 20,608 |
| Animals in World History | 0 | - | 4.70 | 42,476 |
| Countries with the Most Wolves | 0 | - | 4.89 | 90,040 |
| Countries that Catch the Most Fish | 0 | - | 4.89 | 106,505 |
| Sea Creatures by Picture | 0 | - | 4.27 | 16,816 |
| Former Countries by Territory Map | 0 | - | 4.96 | 93,180 |
| Empires by Maps | 0 | - | 4.99 | 105,951 |
| Countries with the Most Wild Elephants | 0 | - | 4.56 | 52,771 |
| Animal Populations of Countries | 0 | - | 4.51 | 41,899 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 32,307 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 91,170 |
| Fish by Picture #2 | 0 | - | 4.06 | 17,279 |
| Flowers by Picture | 0 | - | 4.47 | 102,989 |
| Birds by Picture #1 | 0 | - | 4.46 | 37,796 |
| North American Bird-Named Teams | 0 | - | 4.42 | 66,437 |
| Countries with NO Snakes | 0 | - | 4.51 | 62,895 |
| Islands by Shape #2 | 0 | - | 4.88 | 46,717 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.97 | 92,853 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 57,359 |
| All Country Flags of the World | 0 | - | 5.00 | 3,266,535 |
| Extinct Animals | 0 | - | 4.18 | 26,667 |
| "Big Five" African Game Animals | 0 | - | 4.20 | 46,184 |
| Earliest Domestication of Animals | 0 | - | 4.33 | 27,810 |
| Animals in the News | 0 | - | 4.36 | 19,448 |
| Countries with Wild Lions | 0 | - | 4.74 | 23,909 |
| Where Do Musk Oxen Live? | 0 | - | 4.62 | 14,930 |
| Megadiverse Countries | 0 | - | 4.96 | 129,995 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,447,924 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,047,550 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 701,365 |
| Top 10 Countries with the Most Horses | 0 | - | 4.51 | 66,639 |
| Birds by Picture #2 | 0 | - | 4.32 | 33,238 |
| Countries with More Cows than People | 0 | - | 4.40 | 48,818 |
| Years in History by Picture | 0 | - | 4.44 | 32,162 |
| Make a Stained Glass Window | 0 | - | 4.99 | 63,424 |
| Famous Foreheads #1 | 0 | - | 4.47 | 70,347 |
| Flags with Crescents | 0 | - | 4.98 | 154,946 |
| Country Flag Trivia | 0 | - | 4.82 | 50,146 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 93,857 |
| Country Flags with the Union Jack | 0 | - | 4.81 | 62,089 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 76,191 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 60,433 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.85 | 68,226 |
| Flag Maths | 0 | - | 4.92 | 54,075 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 46,964 |
| National Soccer Team Logos | 0 | - | 4.82 | 167,431 |
| Largest Land Animals of the Americas | 0 | - | 4.36 | 19,792 |
| Largest Land Animals of Africa | 0 | - | 4.35 | 12,096 |
| Top Countries for Shark Attacks | 0 | - | 4.46 | 44,561 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 80,258 |
| Countries with Fjords | 0 | - | 4.92 | 82,354 |
| Name that Object #1 | 0 | - | 3.57 | 95,543 |
| Name that Object #3 | 0 | - | 4.04 | 13,776 |
| Birds by Picture #3 | 0 | - | 4.21 | 30,662 |
| Flags to Languages | 0 | - | 4.95 | 165,366 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.52 | 24,099 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 45,920 |
| Fruits by Picture | 0 | - | 4.19 | 763,182 |
| Old Movies by Picture | 0 | - | 4.51 | 22,997 |
| Musical Instruments by Picture #2 | 0 | - | 4.23 | 44,715 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 22,842 |
| Australian Animals By Picture | 0 | - | 4.44 | 30,360 |
| Geography by Picture - B | 0 | - | 4.41 | 53,992 |
| Geography by Picture - H | 0 | - | 4.49 | 56,748 |
| Geography by Picture - N | 0 | - | 4.43 | 40,915 |
| Geography by Picture - R | 0 | - | 4.55 | 39,795 |
| Geography by Picture - T | 0 | - | 4.54 | 56,344 |
| Random Logos Quiz | 0 | - | 4.34 | 198,467 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 103,425 |
| Pictures by Letter - J | 0 | - | 4.27 | 37,958 |
| Pictures by Letter - B | 0 | - | 4.27 | 41,519 |
| Pictures by Letter - D | 0 | - | 4.17 | 35,531 |
| Pictures by Letter - M | 0 | - | 4.21 | 35,995 |
| History by Picture - N | 0 | - | 4.43 | 38,907 |
| Name the Pixelated Landmark | 0 | - | 4.82 | 58,750 |
| Car Logos Quiz #1 | 0 | - | 4.53 | 499,173 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 78,385 |
| Largest Land Animals of Asia | 0 | - | 3.60 | 7,948 |
| Countries With The Most Bird Species | 0 | - | 4.92 | 22,225 |
| Capital Cities by Body of Water | 0 | - | 4.88 | 55,458 |
| Countries With No Rivers | 0 | - | 4.96 | 72,834 |
| Name a Valid Country for Each River | 0 | - | 4.97 | 56,406 |
| Countries That Touch the Baltic Sea | 0 | - | 4.99 | 113,762 |
| North Sea Countries | 0 | - | 4.92 | 83,561 |
| Black Sea Countries | 0 | - | 4.87 | 58,851 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 63,208 |
| Caspian Sea Countries | 0 | - | 4.90 | 60,991 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 401,310 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 65,464 |
| Islands by Shape #1 | 0 | - | 4.28 | 72,632 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 55,448 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 48,540 |
| Elements by Picture | 0 | - | 4.28 | 66,627 |
| Name that Object #2 | 0 | - | 3.65 | 14,749 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.47 | 28,164 |
| Islands by Picture | 0 | - | 4.29 | 99,461 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 95,694 |
| Dog Breed Picture Quiz | 0 | - | 4.33 | 200,183 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 46,072 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 307,011 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 259,078 |
| Name that Historical Figure #5 | 0 | - | 4.41 | 97,532 |
| Geography by Picture - A | 0 | - | 4.37 | 58,578 |
| Geography by Picture - D | 0 | - | 4.14 | 44,405 |
| Geography by Picture - F | 0 | - | 4.30 | 49,614 |
| Geography by Picture - G | 0 | - | 4.39 | 46,672 |
| Geography by Picture - J | 0 | - | 4.15 | 37,402 |
| Geography by Picture - K | 0 | - | 4.28 | 32,087 |
| Geography by Picture - C | 0 | - | 4.30 | 55,627 |
| Geography by Picture - L | 0 | - | 4.35 | 57,372 |
| Geography by Picture - M | 0 | - | 4.12 | 39,417 |
| Geography by Picture - P | 0 | - | 4.25 | 41,315 |
| Geography by Picture - S | 0 | - | 4.36 | 45,817 |
| Random Flags Quiz | 0 | - | 4.41 | 267,229 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 136,263 |
| Satellite Images Quiz #1 | 0 | - | 4.49 | 125,951 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 106,602 |
| Satellite Images Quiz #4 | 0 | - | 4.54 | 86,877 |
| Satellite Images Quiz #5 | 0 | - | 4.46 | 47,889 |
| Satellite Images Quiz #6 | 0 | - | 4.53 | 37,399 |
| Cities by Picture #1 | 0 | - | 4.70 | 81,469 |
| Soccer Team Logos | 0 | - | 4.26 | 349,582 |
| Ultimate Car Logos Quiz | 0 | - | 4.71 | 152,504 |
| Car Logos Quiz #2 | 0 | - | 4.42 | 244,584 |
| Video Game Logos Quiz | 0 | - | 4.37 | 160,625 |
| Movie Logos | 0 | - | 4.31 | 218,335 |
| Brand Logos That Start With M | 0 | - | 4.43 | 55,651 |
| Brand Logos That Start With B | 0 | - | 4.45 | 54,256 |
| Brand Logos That Start with A | 0 | - | 4.54 | 63,146 |
| Pictures by Letter - A | 0 | - | 4.11 | 31,491 |
| Pictures by Letter - E | 0 | - | 3.47 | 33,002 |
| Pictures by Letter - C | 0 | - | 4.01 | 28,551 |
| Pictures by Letter - G | 0 | - | 4.10 | 26,476 |
| Pictures by Letter - L | 0 | - | 4.12 | 28,932 |
| Pictures by Letter - F | 0 | - | 4.13 | 27,329 |
| Pictures by Letter - Z | 0 | - | 4.15 | 22,246 |
| Pictures by Letter - Y | 0 | - | 4.19 | 24,905 |
| Pictures by Letter - R | 0 | - | 4.10 | 23,407 |
| Pictures by Letter - K | 0 | - | 4.14 | 23,711 |
| Pictures by Letter - I | 0 | - | 4.16 | 28,741 |
| Pictures by Letter - N | 0 | - | 4.11 | 23,107 |
| Pictures by Letter - P | 0 | - | 4.04 | 24,704 |
| Pictures by Letter - U | 0 | - | 4.07 | 19,552 |
| Pictures by Letter - T | 0 | - | 4.32 | 26,193 |
| History by Picture - A | 0 | - | 4.23 | 42,890 |
| History by Picture - B | 0 | - | 4.38 | 45,822 |
| History by Picture - C | 0 | - | 4.36 | 51,204 |
| History by Picture - F | 0 | - | 4.33 | 35,354 |
| History by Picture - G | 0 | - | 4.39 | 39,588 |
| History by Picture - D | 0 | - | 4.29 | 41,519 |
| History by Picture - E | 0 | - | 4.29 | 41,246 |
| History by Picture - H | 0 | - | 4.37 | 34,445 |
| History by Picture - M | 0 | - | 4.19 | 34,050 |
| History by Picture - O | 0 | - | 4.38 | 34,042 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 53,605 |
| Baby, Male and Female Animals | 0 | - | 4.43 | 143,840 |
| Words Containing Animals #1 | 0 | - | 4.20 | 42,214 |
| Words Containing Animals #2 | 0 | - | 4.06 | 33,525 |
| Animal Adjectives | 0 | - | 4.77 | 58,302 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 26,955 |
| Animals: No Vowels #1 | 0 | - | 4.57 | 61,519 |
| Bird Knowledge #2 | 0 | - | 4.42 | 13,567 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 35,973 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 71,387 |
| African Great Lakes | 0 | - | 4.82 | 59,548 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.98 | 110,308 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 88,680 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 99,736 |
| Art Works Picture Quiz #2 | 0 | - | 4.48 | 88,924 |
| Musical Instruments by Picture #1 | 0 | - | 4.53 | 261,725 |
| Shapes and Symbols #2 | 0 | - | 4.03 | 56,258 |
| Art Works Picture Quiz #3 | 0 | - | 4.41 | 42,890 |
| Authors by Picture | 0 | - | 4.47 | 24,582 |
| Fruit and Vegetable Emojis | 0 | - | 4.41 | 68,914 |
| WWII Figures by Picture | 0 | - | 4.83 | 45,265 |
| College Sports Logos Quiz #3 | 0 | - | 4.27 | 50,351 |
| Planets By Picture Quiz | 0 | - | 4.49 | 52,279 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 60,987 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.26 | 67,304 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.24 | 49,058 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 49,296 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.18 | 68,212 |
| 1980s Celebrities by Picture #1 | 0 | - | 4.02 | 58,890 |
