| Top 10 Countries in Nuclear Power Production | 86,718 | 0 | - |
| Top 10 European Countries by English Proficiency | 65,828 | 0 | - |
| Countries by Three Words #1 | 265,966 | 0 | - |
| European Countries by Clue | 183,861 | 0 | - |
| The Only Asian Country ... | 122,578 | 0 | - |
| Countries by Three Words #2 | 203,353 | 0 | - |
| The Only African Country ... | 129,302 | 0 | - |
| The Only American Country ... | 121,846 | 0 | - |
| Countries by Three Words #3 | 129,219 | 0 | - |
| Which European Country - Multiple Choice | 84,472 | 0 | - |
| Countries by a Single Clue #1 | 100,838 | 0 | - |
| Countries with a Population Under 1 Million by Clue | 93,008 | 0 | - |
| Countries by a Single Clue #2 | 95,168 | 0 | - |
| Countries by a Single Clue #5 | 101,246 | 0 | - |
| Countries by Three Words #4 | 101,002 | 0 | - |
| Countries by a Single Clue #8 | 95,065 | 0 | - |
| Countries by a Single Clue #6 | 87,084 | 0 | - |
| Five Countries by a Single Word by Continent | 78,373 | 0 | - |
| Countries by a Single Clue #3 | 86,909 | 0 | - |
| Countries by a Single Clue #12 | 79,074 | 0 | - |
| Countries by a Single Clue #11 | 76,617 | 0 | - |
| Countries by a Single Clue #9 | 73,215 | 0 | - |
| Which Asian Country? | 57,637 | 0 | - |
| Countries by a Single Clue #4 | 77,049 | 0 | - |
| Countries by a Single Clue #10 | 67,916 | 0 | - |
| African Countries by a Single Clue | 68,226 | 0 | - |
| Countries by a Single Clue #7 | 70,419 | 0 | - |
| Which South American Country? | 52,013 | 0 | - |
| Which African Country? | 36,403 | 0 | - |
| Countries by Haiku #2 | 44,019 | 0 | - |
| Countries by Haiku #1 | 44,246 | 0 | - |
| Countries by a Single Word | 28,862 | 0 | - |
| Countries by a Single Clue #14 | 44,644 | 0 | - |
| Countries by a Single Clue #13 | 39,562 | 0 | - |
| Countries by a Single Clue #17 | 27,055 | 0 | - |
| Countries by a Single Clue #16 | 25,802 | 0 | - |
| Countries by a Single Clue #15 | 22,513 | 0 | - |
| The 21st Century | 106,168 | 0 | - |
| The 20th Century | 97,679 | 0 | - |
| Geographic Groups of Two #1 | 237,358 | 0 | - |
| Geographic Groups of Seven #2 | 35,485 | 0 | - |
| Random Geographic Groups of Six | 50,011 | 0 | - |
| Geographic Groups of Six #2 | 53,324 | 0 | - |
| Geographic Groups of Five #2 | 64,061 | 0 | - |
| Geographic Groups of Eight | 58,847 | 0 | - |
| Geographic Groups of Three #2 | 69,951 | 0 | - |
| Geographic Groups of Four #2 | 80,888 | 0 | - |
| Geographic Groups of Two #4 | 78,451 | 0 | - |
| Geographic Groups of Two #3 | 84,179 | 0 | - |
| Geographic Groups of Six #1 | 92,888 | 0 | - |
| Geographic Groups of Three #1 | 96,800 | 0 | - |
| Random Geographic Groups of Five | 114,870 | 0 | - |
| Geographic Groups of Two #2 | 115,288 | 0 | - |
| Geographic Groups of Five #1 | 120,677 | 0 | - |
| Geographic Groups of Seven #1 | 141,186 | 0 | - |
| Geographic Groups of Four #1 | 176,219 | 0 | - |
| Most-Visited Countries by Americans | 109,983 | 0 | - |
| Most-Followed Twitter Users | 75,980 | 0 | - |
