| Birds by Picture #1 | 0 | - | 4.47 | 42,004 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,814 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,669 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,447 |
| Animals by Close-up Image | 0 | - | 4.42 | 218,975 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,977 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,455 |
| Mammals by Picture #1 | 0 | - | 4.70 | 92,381 |
| Animals by Skeleton Image | 0 | - | 4.81 | 46,884 |
| Fish by Picture #1 | 0 | - | 4.41 | 109,027 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,821 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,467 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,322 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,531 |
| Build-a-Bird by Guessing Countries | 0 | - | 4.99 | 63,651 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,178 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,755 |
| Sea Creatures by Picture | 0 | - | 4.27 | 17,809 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,888 |
| Name that Bug | 0 | - | 4.12 | 45,625 |
| Fish by Picture #2 | 0 | - | 4.09 | 18,733 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,651 |
| Empires by Maps | 0 | - | 4.98 | 121,736 |
| Merged Company Logos #1 | 0 | - | 4.90 | 107,164 |
| Animals of Australia | 0 | - | 4.52 | 42,464 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,477 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,370 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 105,211 |
| Play-Doh People from History | 0 | - | 4.99 | 95,439 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,514 |
| Jeppy in Disguise #1 | 0 | - | 4.92 | 49,926 |
| Jeppy in Disguise #2 | 0 | - | 4.96 | 49,995 |
| Dog Breed Picture Quiz | 0 | - | 4.34 | 206,596 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,018 |
| All Country Flags of the World | 0 | - | 5.00 | 3,707,140 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,544,681 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,596 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,050 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,977 |
| Flags with Crescents | 0 | - | 4.98 | 171,153 |
| Country Flag Trivia | 0 | - | 4.81 | 57,882 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,763 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,313 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,427 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,847 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,883 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,413 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,578 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 183,601 |
| National Football Team Logos | 0 | - | 4.85 | 181,635 |
| Movies with Animals in the Title #1 | 0 | - | 4.20 | 184,040 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 108,763 |
| National Animals | 0 | - | 4.24 | 90,194 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,199 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,485 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,497 |
| Years in History by Picture | 0 | - | 4.44 | 35,737 |
| Famous Foreheads #1 | 0 | - | 4.47 | 75,349 |
| Flags to Languages | 0 | - | 4.95 | 174,405 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.19 | 72,457 |
| Merged Company Logos #2 | 0 | - | 4.75 | 78,080 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,970 |
| Disney Animals | 0 | - | 4.27 | 240,600 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,593 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,780 |
| Fruits by Picture | 0 | - | 4.19 | 808,971 |
| Old Movies by Picture | 0 | - | 4.51 | 25,240 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,279 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 339,130 |
| Geography by Picture - B | 0 | - | 4.42 | 55,759 |
| Geography by Picture - H | 0 | - | 4.50 | 58,357 |
| Geography by Picture - N | 0 | - | 4.45 | 42,327 |
| Geography by Picture - R | 0 | - | 4.56 | 41,130 |
| Geography by Picture - T | 0 | - | 4.54 | 57,981 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,387 |
| Car Logos Quiz #1 | 0 | - | 4.52 | 543,499 |
| Random Logos Quiz | 0 | - | 4.33 | 209,316 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 116,179 |
| Pictures by Letter - A | 0 | - | 4.18 | 33,625 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,255 |
| Pictures by Letter - B | 0 | - | 4.32 | 44,233 |
| Pictures by Letter - D | 0 | - | 4.14 | 37,788 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,988 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,671 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,505 |
| Animals in World History | 0 | - | 4.74 | 44,657 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,069 |
| Animals in the Bible | 0 | - | 4.83 | 37,005 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,851 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,490 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,240 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,953 |
| Elements by Picture | 0 | - | 4.27 | 70,279 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,501 |
| Islands by Picture | 0 | - | 4.28 | 107,682 |
| Name that Object #1 | 0 | - | 3.57 | 96,594 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,433 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,164 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 104,581 |
| Famous Landmarks Out Of Focus #2 | 0 | - | 4.37 | 41,501 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,185 |
| International Footballers by Picture | 0 | - | 4.51 | 56,317 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 285,862 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 108,465 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 51,150 |
| Geography by Picture - A | 0 | - | 4.39 | 60,408 |
| Geography by Picture - D | 0 | - | 4.15 | 45,768 |
| Geography by Picture - F | 0 | - | 4.31 | 51,151 |
| Geography by Picture - G | 0 | - | 4.39 | 48,061 |
| Geography by Picture - J | 0 | - | 4.16 | 38,574 |
| Geography by Picture - K | 0 | - | 4.29 | 33,231 |
| Geography by Picture - C | 0 | - | 4.31 | 57,213 |
| Geography by Picture - L | 0 | - | 4.37 | 59,113 |
| Geography by Picture - M | 0 | - | 4.14 | 40,562 |
| Geography by Picture - P | 0 | - | 4.24 | 42,547 |
| Geography by Picture - S | 0 | - | 4.38 | 47,166 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,898 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,321 |
| Flag Maths | 0 | - | 4.61 | 57,825 |
| Satellite Images #1 | 0 | - | 4.47 | 129,929 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 109,619 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,176 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,794 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,189 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,175 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,501 |
| Soccer Team Logos | 0 | - | 4.26 | 377,236 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,436,349 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 263,637 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,873 |
| Movie Logos | 0 | - | 4.33 | 240,136 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,063 |
| History by Picture - A | 0 | - | 4.26 | 46,105 |
| History by Picture - B | 0 | - | 4.40 | 49,295 |
| History by Picture - C | 0 | - | 4.33 | 54,827 |
| History by Picture - F | 0 | - | 4.35 | 38,153 |
| History by Picture - G | 0 | - | 4.40 | 42,390 |
| History by Picture - D | 0 | - | 4.29 | 44,615 |
| History by Picture - E | 0 | - | 4.25 | 44,193 |
| History by Picture - H | 0 | - | 4.37 | 37,040 |
| History by Picture - K | 0 | - | 4.35 | 33,575 |
| History by Picture - M | 0 | - | 4.17 | 36,359 |
| History by Picture - N | 0 | - | 4.40 | 41,494 |
| History by Picture - O | 0 | - | 4.39 | 36,522 |
| History by Picture - T | 0 | - | 4.20 | 33,511 |
| Name that Nut, Seed, or Bean | 0 | - | 4.57 | 57,607 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,142 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,032 |
| North American Cat-Named Sports Teams | 0 | - | 4.43 | 33,805 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,465 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,318 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,684 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,657 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,760 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,812 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 269,687 |
| Flowers by Picture | 0 | - | 4.46 | 105,835 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,937 |
| Name that Object #2 | 0 | - | 3.63 | 15,511 |
| Authors by Picture | 0 | - | 4.48 | 25,620 |
| Name that Object #3 | 0 | - | 3.93 | 14,451 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,803 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 56,122 |
| Planets By Picture Quiz | 0 | - | 4.49 | 57,307 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,447 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 59,264 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,739 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,718 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,638 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,349 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,076 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,731 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,785 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 96,030 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,336 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 240,529 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,964 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,965 |
| Musicians by Picture #1 | 0 | - | 4.38 | 109,873 |
| Musicians by Picture #2 | 0 | - | 4.29 | 77,274 |
| Musicians by Picture #4 | 0 | - | 4.07 | 65,509 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,476 |
| Emoji Flags | 0 | - | 4.35 | 44,265 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,598 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,195 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,592 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,613 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,910 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 71,199 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,920 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 395,541 |
| Airline Logos | 0 | - | 4.45 | 141,352 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 249,341 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 159,819 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,443 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,194 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,560 |
| Brand Logos That Start With D | 0 | - | 4.36 | 62,123 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,826 |
| Brand Logos That Start With C | 0 | - | 4.20 | 50,068 |
