| Countries of the World Quiz | 47,858,440 | 0 | - |
| Europe Capitals Quiz | 1,598,988 | 0 | - |
| European Capitals by Map | 142,011 | 0 | - |
| Asia Capitals Quiz | 698,622 | 0 | - |
| Asian Capitals - Map Quiz | 61,923 | 0 | - |
| Asian Capitals by Map | 63,878 | 0 | - |
| US States Quiz | 16,990,356 | 0 | - |
| All 88 constellations by picture | 920 | - | - |
| U.S. Presidents Quiz | 3,724,708 | 0 | - |
| Prime Ministers of the UK | 442,163 | 0 | - |
| Africa Capitals Quiz | 743,481 | 0 | - |
| African Capitals by Map | 142,072 | 0 | - |
| South American Capitals - Map Quiz | 131,381 | 0 | - |
| North American Capitals - Map Quiz | 58,799 | 0 | - |
| African Capitals - Map Quiz | 63,209 | 0 | - |
| Click the Asian Capitals on a Map | 43,014 | 0 | - |
| North America Capitals Quiz | 222,091 | 0 | - |
| North American Capitals by Map | 8,980 | - | - |
| South America Map Quiz | 1,556,389 | 0 | - |
| South American Capitals by Map | 16,706 | - | - |
| South America Capitals Quiz | 484,850 | 0 | - |
| U.S. State Capitals Quiz | 1,698,352 | 0 | - |
| Official Cities in the UK | 286,131 | 0 | - |
| Name the English Monarchs | 506,227 | 0 | - |
| Counties of England | 802,614 | 0 | - |
| Largest Objects in the Solar System | 138,401 | 0 | - |
| Elements of the Periodic Table | 2,259,662 | 0 | - |
| International Scientific Units | 158,272 | 0 | - |
| Major Taxonomic Ranks | 81,118 | 0 | - |
| Letters of the Greek Alphabet | 651,689 | 0 | - |
| Ye Olde Professions | 157,454 | 0 | - |
| World Capitals Quiz | 5,104,438 | 0 | - |
| African Great Lakes | 66,946 | 0 | - |
| 5 Oceans Map Quiz | 3,602 | - | - |
| Oceanian Capitals - Map Quiz | 51,434 | 0 | - |
| Oceanian Capitals by Map | 15,784 | - | - |
| Oceania Capitals | 23,268 | - | - |
| All Country Flags of the World | 3,711,171 | 0 | - |
| Brightest star of each constellation | 65 | - | - |
