| Countries of the World Quiz | 47,377,310 | 0 | - |
| Europe Capitals Quiz | 1,584,111 | 0 | - |
| European Capitals by Map | 138,821 | 0 | - |
| Asia Capitals Quiz | 691,745 | 0 | - |
| Asian Capitals - Map Quiz | 61,210 | 0 | - |
| Asian Capitals by Map | 62,180 | 0 | - |
| US States Quiz | 16,849,339 | 0 | - |
| All 88 constellations by picture | 839 | - | - |
| U.S. Presidents Quiz | 3,692,141 | 0 | - |
| Prime Ministers of the UK | 438,294 | 0 | - |
| Africa Capitals Quiz | 736,600 | 0 | - |
| African Capitals by Map | 133,539 | 0 | - |
| South American Capitals - Map Quiz | 130,313 | 0 | - |
| North American Capitals - Map Quiz | 57,804 | 0 | - |
| African Capitals - Map Quiz | 62,356 | 0 | - |
| Click the Asian Capitals on a Map | 41,610 | 0 | - |
| North America Capitals Quiz | 219,374 | 0 | - |
| North American Capitals by Map | 8,756 | - | - |
| South America Map Quiz | 1,548,438 | 0 | - |
| South American Capitals by Map | 16,148 | - | - |
| South America Capitals Quiz | 480,771 | 0 | - |
| U.S. State Capitals Quiz | 1,687,766 | 0 | - |
| Official Cities in the UK | 283,301 | 0 | - |
| Name the English Monarchs | 501,960 | 0 | - |
| Counties of England | 795,539 | 0 | - |
| Largest Objects in the Solar System | 137,056 | 0 | - |
| Elements of the Periodic Table | 2,239,515 | 0 | - |
| International Scientific Units | 156,644 | 0 | - |
| Major Taxonomic Ranks | 80,459 | 0 | - |
| Letters of the Greek Alphabet | 646,636 | 0 | - |
| Ye Olde Professions | 156,646 | 0 | - |
| World Capitals Quiz | 5,067,201 | 0 | - |
| African Great Lakes | 66,116 | 0 | - |
| 5 Oceans Map Quiz | 3,435 | - | - |
| Oceanian Capitals - Map Quiz | 50,566 | 0 | - |
| Oceanian Capitals by Map | 15,130 | - | - |
| Oceania Capitals | 23,040 | - | - |
| All Country Flags of the World | 3,654,824 | 0 | - |
| Brightest star of each constellation | 56 | - | - |
