| Click the Correct Continent | 100,980 | 0 | - |
| 15 Most Populous Countries that Speak a Romance Language | 127,463 | 0 | - |
| The Diseases They Had | 13,952 | 0 | - |
| Diseases and Medical Conditions A-Z | 57,022 | 0 | - |
| Diseases: Virus... or Bacteria? | 38,526 | 0 | - |
| Diseases: Deadliest Infectious Diseases by Country | 1,308 | - | - |
| Most Common Elements in the Human Body | 151,087 | 0 | - |
| Elements by Picture | 69,703 | 0 | - |
| Elements of the Periodic Table | 2,228,756 | 0 | - |
| Ethnic Groups A-Z | 42,131 | 0 | - |
| Five Biggest Immigrant Groups by Country #1 | 179,808 | 0 | - |
| Five Biggest Immigrant Groups by Country #2 | 88,649 | 0 | - |
| European Diaspora - Top 11 Countries | 95,290 | 0 | - |
| African Diaspora - Top 10 Countries | 72,417 | 0 | - |
| Countries by Net Migration | 83,544 | 0 | - |
| Most Desired Destinations for Potential Migrants | 50,107 | - | - |
| Most Populous Native American Tribes | 12,426 | 0 | - |
| 23 Largest Ethnic Groups in Africa | 983 | - | - |
| Countries with Above Average Fertility – Sudden Death | 29,706 | 0 | - |
| Monarchies - Sudden Death | 84,140 | 0 | - |
| Monarchies of the World | 167,265 | 0 | - |
| Rocks and Minerals Picture Quiz | 29,223 | 0 | - |
| World Leaders by Picture | 264,129 | 0 | - |
| Clothing by Picture | 11,549 | 0 | - |
| Reptile Picture Quiz | 14,253 | 0 | - |
| Weapons by Picture | 20,958 | 0 | - |
| Statues of People Picture Quiz | 25,581 | 0 | - |
| London Football Clubs Map | 1,955 | - | - |
| Recommended Childhood Vaccines for Americans | 14,673 | 0 | - |
| Letters of the Greek Alphabet | 644,130 | 0 | - |
| Name that Greek Letter | 322,372 | 0 | - |
| Zone 1 London Underground Stations - With a Map | 52,126 | 0 | - |
| Largest Objects in the Solar System | 136,291 | 0 | - |
| International Scientific Units | 155,894 | 0 | - |
| Major Taxonomic Ranks | 80,101 | 0 | - |
| Cities by Skyline Silhouette - Map Quiz | 123,295 | 0 | - |
| Famous Buildings by Picture A-Z | 2,547 | - | - |
| Largest Land Animals of Asia | 8,274 | 0 | - |
| English Inventions #2 | 8,679 | 0 | - |
| Insect Knowledge #2 | 8,930 | 0 | - |
| London City Airport Destinations (London, UK) | 213 | - | - |
| Top 100 Most Viewed Cities on Wikipedia | 3,972 | - | - |
| Famous People Named Thomas | 66,645 | 0 | - |
| Famous Dictators #2 | 87,230 | 0 | - |
| Famous European Cities by Picture | 65 | - | - |
| Countries with the Most Military Troops | 286,086 | 0 | - |
| Countries With the Most English Speakers | 130,644 | 0 | - |
| Top North/South American Languages on the Map | 1,471 | - | - |
| Five Languages with the Most Native Speakers by Continent | 62,109 | 0 | - |
| Geological Extremes | 39,973 | 0 | - |
| Countries Larger Than Texas but With Fewer People | 39,654 | 0 | - |
| Click the Compass #1 | 57,679 | 0 | - |
| Same... or Different? | 40,104 | 0 | - |
