| Click the Correct Continent | 100,978 | 0 | - |
| 15 Most Populous Countries that Speak a Romance Language | 127,461 | 0 | - |
| The Diseases They Had | 13,951 | 0 | - |
| Diseases and Medical Conditions A-Z | 56,999 | 0 | - |
| Diseases: Virus... or Bacteria? | 38,523 | 0 | - |
| Diseases: Deadliest Infectious Diseases by Country | 1,308 | - | - |
| Most Common Elements in the Human Body | 151,082 | 0 | - |
| Elements by Picture | 69,702 | 0 | - |
| Elements of the Periodic Table | 2,228,548 | 0 | - |
| Ethnic Groups A-Z | 42,131 | 0 | - |
| Five Biggest Immigrant Groups by Country #1 | 179,802 | 0 | - |
| Five Biggest Immigrant Groups by Country #2 | 88,646 | 0 | - |
| European Diaspora - Top 11 Countries | 95,285 | 0 | - |
| African Diaspora - Top 10 Countries | 72,414 | 0 | - |
| Countries by Net Migration | 83,535 | 0 | - |
| Most Desired Destinations for Potential Migrants | 50,106 | - | - |
| Most Populous Native American Tribes | 12,425 | 0 | - |
| 23 Largest Ethnic Groups in Africa | 983 | - | - |
| Countries with Above Average Fertility – Sudden Death | 29,703 | 0 | - |
| Monarchies - Sudden Death | 84,135 | 0 | - |
| Monarchies of the World | 167,257 | 0 | - |
| Rocks and Minerals Picture Quiz | 29,220 | 0 | - |
| World Leaders by Picture | 264,116 | 0 | - |
| Clothing by Picture | 11,548 | 0 | - |
| Reptile Picture Quiz | 14,253 | 0 | - |
| Weapons by Picture | 20,957 | 0 | - |
| Statues of People Picture Quiz | 25,576 | 0 | - |
| London Football Clubs Map | 1,955 | - | - |
| Recommended Childhood Vaccines for Americans | 14,673 | 0 | - |
| Letters of the Greek Alphabet | 644,096 | 0 | - |
| Name that Greek Letter | 322,341 | 0 | - |
| Zone 1 London Underground Stations - With a Map | 52,122 | 0 | - |
| Largest Objects in the Solar System | 136,283 | 0 | - |
| International Scientific Units | 155,889 | 0 | - |
| Major Taxonomic Ranks | 80,092 | 0 | - |
| Cities by Skyline Silhouette - Map Quiz | 123,287 | 0 | - |
| Famous Buildings by Picture A-Z | 2,547 | - | - |
| Largest Land Animals of Asia | 8,273 | 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 | 66,626 | 0 | - |
| Famous Dictators #2 | 87,228 | 0 | - |
| Famous European Cities by Picture | 65 | - | - |
| Countries with the Most Military Troops | 286,070 | 0 | - |
| Countries With the Most English Speakers | 130,635 | 0 | - |
| Top North/South American Languages on the Map | 1,471 | - | - |
| Five Languages with the Most Native Speakers by Continent | 62,103 | 0 | - |
| Geological Extremes | 39,973 | 0 | - |
| Countries Larger Than Texas but With Fewer People | 39,653 | 0 | - |
| Click the Compass #1 | 57,674 | 0 | - |
| Same... or Different? | 40,101 | 0 | - |
