| Animals by Skeleton Image | 0 | - | 4.81 | 42,325 |
| Former Countries by Territory Map | 0 | - | 4.96 | 94,365 |
| Empires by Maps | 0 | - | 4.98 | 107,637 |
| Elements by Picture | 0 | - | 4.27 | 67,016 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.47 | 28,294 |
| Islands by Shape #2 | 0 | - | 4.85 | 47,120 |
| Planets By Picture Quiz | 0 | - | 4.49 | 52,701 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 57,802 |
| All Country Flags of the World | 0 | - | 5.00 | 3,306,179 |
| Metals of Antiquity | 0 | - | 4.94 | 89,708 |
| Years in History by Picture | 0 | - | 4.44 | 32,530 |
| Famous Foreheads #1 | 0 | - | 4.47 | 70,856 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,458,352 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,053,285 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 705,288 |
| Name that Object #1 | 0 | - | 3.57 | 95,654 |
| Make a Stained Glass Window | 0 | - | 4.99 | 63,977 |
| Flags with Crescents | 0 | - | 4.98 | 156,425 |
| Country Flag Trivia | 0 | - | 4.81 | 51,056 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 94,946 |
| Country Flags with the Union Jack | 0 | - | 4.81 | 62,873 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 77,422 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 61,141 |
| Flag Maths | 0 | - | 4.91 | 54,666 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 47,611 |
| National Soccer Team Logos | 0 | - | 4.85 | 169,159 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 107,632 |
| Old Movies by Picture | 0 | - | 4.51 | 23,166 |
| Musical Instruments by Picture #2 | 0 | - | 4.23 | 44,952 |
| Random Logos Quiz | 0 | - | 4.32 | 199,688 |
| Pictures by Letter - A | 0 | - | 4.14 | 31,665 |
| Pictures by Letter - J | 0 | - | 4.28 | 38,187 |
| Pictures by Letter - B | 0 | - | 4.27 | 41,761 |
| Pictures by Letter - D | 0 | - | 4.17 | 35,758 |
| Pictures by Letter - M | 0 | - | 4.21 | 36,183 |
| Fruits by Picture | 0 | - | 4.19 | 766,677 |
| Geography by Picture - B | 0 | - | 4.41 | 54,177 |
| Geography by Picture - H | 0 | - | 4.49 | 56,892 |
| Geography by Picture - N | 0 | - | 4.44 | 41,052 |
| Geography by Picture - R | 0 | - | 4.55 | 39,922 |
| Geography by Picture - T | 0 | - | 4.54 | 56,526 |
| Flags to Languages | 0 | - | 4.95 | 166,143 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 104,666 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 46,499 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.82 | 54,468 |
| Countries with the Most Forest | 0 | - | 4.88 | 142,700 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,174 |
| Countries with Glaciers | 0 | - | 4.96 | 101,207 |
| Name that Object #2 | 0 | - | 3.65 | 14,822 |
| Name that Object #3 | 0 | - | 3.98 | 13,855 |
| Name the Pixelated Landmark | 0 | - | 4.81 | 59,190 |
| Car Logos Quiz #1 | 0 | - | 4.53 | 503,138 |
| Pictures by Letter - E | 0 | - | 3.47 | 33,162 |
| Pictures by Letter - C | 0 | - | 4.01 | 28,738 |
| Pictures by Letter - G | 0 | - | 4.10 | 26,645 |
| Pictures by Letter - L | 0 | - | 4.12 | 29,103 |
| Pictures by Letter - F | 0 | - | 4.13 | 27,488 |
| Pictures by Letter - Z | 0 | - | 4.10 | 22,385 |
| Pictures by Letter - Y | 0 | - | 4.19 | 25,040 |
| Pictures by Letter - R | 0 | - | 4.06 | 23,550 |
| Pictures by Letter - K | 0 | - | 4.14 | 23,863 |
| Pictures by Letter - I | 0 | - | 4.16 | 28,918 |
| Pictures by Letter - N | 0 | - | 4.11 | 23,266 |
| Pictures by Letter - P | 0 | - | 4.04 | 24,851 |
| Pictures by Letter - U | 0 | - | 4.07 | 19,669 |
| Pictures by Letter - T | 0 | - | 4.32 | 26,358 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 33,653 |
| Name that Bug | 0 | - | 4.10 | 44,747 |
| Islands by Shape #1 | 0 | - | 4.28 | 72,787 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 55,685 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 48,750 |
| Islands by Picture | 0 | - | 4.28 | 100,297 |
| Classic Movies by Movie Posters | 0 | - | 4.44 | 22,959 |
| Animals by Close-up Image | 0 | - | 4.41 | 210,676 |
| Mammals by Picture #3 | 0 | - | 4.43 | 58,897 |
| Aquatic Mammals by Picture | 0 | - | 4.42 | 42,820 |
| Extinct Animals by Picture | 0 | - | 4.48 | 33,007 |
| Mammals by Picture #1 | 0 | - | 4.74 | 87,173 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 46,300 |
| Name that Historical Figure #1 | 0 | - | 4.64 | 308,566 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 260,428 |
| Name that Historical Figure #5 | 0 | - | 4.42 | 98,392 |
| Geography by Picture - A | 0 | - | 4.37 | 58,779 |
| Geography by Picture - D | 0 | - | 4.14 | 44,531 |
| Geography by Picture - F | 0 | - | 4.30 | 49,764 |
| Geography by Picture - G | 0 | - | 4.39 | 46,828 |
| Geography by Picture - J | 0 | - | 4.15 | 37,504 |
| Geography by Picture - K | 0 | - | 4.28 | 32,202 |
| Geography by Picture - C | 0 | - | 4.30 | 55,804 |
| Geography by Picture - L | 0 | - | 4.35 | 57,554 |
| Geography by Picture - M | 0 | - | 4.12 | 39,523 |
| Geography by Picture - P | 0 | - | 4.22 | 41,445 |
| Geography by Picture - S | 0 | - | 4.36 | 45,978 |
| Random Flags Quiz | 0 | - | 4.41 | 268,642 |
| Satellite Images Quiz #1 | 0 | - | 4.49 | 126,467 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 106,887 |
| Satellite Images Quiz #4 | 0 | - | 4.54 | 87,094 |
| Satellite Images Quiz #5 | 0 | - | 4.46 | 48,106 |
| Satellite Images Quiz #6 | 0 | - | 4.52 | 37,566 |
| Cities by Picture #1 | 0 | - | 4.70 | 81,987 |
| Soccer Team Logos | 0 | - | 4.26 | 352,537 |
| Ultimate Car Logos Quiz | 0 | - | 4.74 | 155,556 |
| Car Logos Quiz #2 | 0 | - | 4.42 | 246,449 |
| Video Game Logos Quiz | 0 | - | 4.37 | 161,844 |
| Movie Logos | 0 | - | 4.31 | 221,078 |
| Brand Logos That Start With M | 0 | - | 4.44 | 56,428 |
| Brand Logos That Start With B | 0 | - | 4.45 | 54,925 |
| Brand Logos That Start with A | 0 | - | 4.54 | 63,923 |
| History by Picture - A | 0 | - | 4.23 | 43,205 |
| History by Picture - B | 0 | - | 4.38 | 46,168 |
| History by Picture - C | 0 | - | 4.36 | 51,557 |
| History by Picture - F | 0 | - | 4.33 | 35,624 |
| History by Picture - G | 0 | - | 4.40 | 39,835 |
| History by Picture - D | 0 | - | 4.29 | 41,832 |
| History by Picture - E | 0 | - | 4.29 | 41,537 |
| History by Picture - H | 0 | - | 4.35 | 34,703 |
| History by Picture - M | 0 | - | 4.15 | 34,287 |
| History by Picture - N | 0 | - | 4.39 | 39,158 |
| History by Picture - O | 0 | - | 4.38 | 34,272 |
| Name that Nut, Seed, or Bean | 0 | - | 4.61 | 53,989 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 27,093 |
| Countries with the Most HIV | 0 | - | 4.47 | 43,668 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 32,820 |
| Countries that Desalinate the Most Water | 0 | - | 4.78 | 39,537 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 137,421 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 103,318 |
| Art Works Picture Quiz #2 | 0 | - | 4.47 | 92,174 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 262,490 |
| Foods by Picture | 0 | - | 3.80 | 221,484 |
| Shapes and Symbols #2 | 0 | - | 4.03 | 56,351 |
| Flowers by Picture | 0 | - | 4.47 | 103,149 |
| Junk Foods by Picture | 0 | - | 3.69 | 93,133 |
| Art Works Picture Quiz #3 | 0 | - | 4.41 | 45,093 |
| Christmas by Picture | 0 | - | 4.28 | 27,190 |
| Hats by Picture | 0 | - | 4.21 | 17,566 |
| Weapons by Picture | 0 | - | 4.10 | 20,111 |
| Cars by Picture | 0 | - | 3.91 | 38,939 |
| Reptile Picture Quiz | 0 | - | 4.30 | 13,690 |
| Authors by Picture | 0 | - | 4.47 | 24,683 |
| Plants by Picture | 0 | - | 4.21 | 13,825 |
| Fruit and Vegetable Emojis | 0 | - | 4.41 | 69,360 |
| WWII Figures by Picture | 0 | - | 4.83 | 46,022 |
| College Sports Logos Quiz #3 | 0 | - | 4.29 | 50,866 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 61,863 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 55,336 |
| Fish by Picture #1 | 0 | - | 4.41 | 105,601 |
| Animals A-Z by Picture | 0 | - | 4.10 | 63,207 |
| Mammals by Picture #4 | 0 | - | 4.06 | 32,448 |
| Birds by Picture #1 | 0 | - | 4.45 | 38,218 |
| Mammals by Picture #2 | 0 | - | 4.29 | 55,660 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.26 | 67,614 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.24 | 49,307 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 49,508 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.18 | 68,597 |
| 1980s Celebrities by Picture #1 | 0 | - | 4.02 | 59,158 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 76,308 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.12 | 68,914 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.17 | 90,212 |
| Women in History by Picture | 0 | - | 4.32 | 24,749 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 44,585 |
| Famous Foreheads #2 | 0 | - | 3.19 | 15,061 |
| International Footballers by Picture | 0 | - | 4.40 | 50,222 |
| Name that Historical Figure #3 | 0 | - | 4.40 | 225,656 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 148,876 |
| Name that Historical Figure #6 | 0 | - | 4.25 | 85,382 |
| Musicians by Picture #1 | 0 | - | 4.38 | 98,614 |
| Musicians by Picture #2 | 0 | - | 4.24 | 69,102 |
| Musicians by Picture #4 | 0 | - | 4.05 | 59,490 |
| Musicians by Picture #3 | 0 | - | 4.08 | 54,894 |
| Geography by Picture - E | 0 | - | 3.54 | 46,543 |
| Landforms by Picture | 0 | - | 4.35 | 19,875 |
| Geography by Picture - I | 0 | - | 3.98 | 38,601 |
| Emoji Flags | 0 | - | 4.35 | 42,439 |
| Satellite Images Quiz #3 | 0 | - | 4.38 | 72,109 |
| Satellite Images - Island Chains | 0 | - | 4.44 | 62,516 |
| Islands by Satellite Image #1 | 0 | - | 4.75 | 66,800 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 26,917 |
| Landmarks Picture Quiz #1 | 0 | - | 4.18 | 371,345 |
| Airline Logos | 0 | - | 4.44 | 135,312 |
| Fast Food Logos Quiz | 0 | - | 4.42 | 238,745 |
| Mostly-American Candy Logos | 0 | - | 4.07 | 149,904 |
| Brand Logos That Start With S | 0 | - | 4.39 | 51,985 |
| Brand Logos That Start With D | 0 | - | 4.33 | 56,186 |
| Brand Logos That Start With L | 0 | - | 4.40 | 54,886 |
| Brand Logos That Start With C | 0 | - | 4.13 | 45,641 |
| Pictures by Letter - H | 0 | - | 3.92 | 29,220 |
| Pictures by Letter - O | 0 | - | 3.95 | 27,592 |
| Pictures by Letter - Q | 0 | - | 3.89 | 19,428 |
| Pictures by Letter - S | 0 | - | 3.80 | 19,875 |
| Pictures by Letter - W | 0 | - | 3.92 | 19,175 |
| Pictures by Letter - V | 0 | - | 3.95 | 17,038 |
| History by Picture - I | 0 | - | 4.26 | 24,637 |
| History by Picture - J | 0 | - | 4.23 | 25,154 |
| History by Picture - K | 0 | - | 4.37 | 31,493 |
| History by Picture - L | 0 | - | 4.21 | 29,147 |
| History by Picture - P | 0 | - | 4.07 | 23,890 |
| History by Picture - Q | 0 | - | 4.02 | 20,842 |
| History by Picture - R | 0 | - | 4.11 | 25,313 |
| History by Picture - S | 0 | - | 4.11 | 26,333 |
| History by Picture - T | 0 | - | 4.28 | 31,522 |
