| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,444 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,519 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,236 |
| Asia Capitals Quiz | 0 | - | 4.98 | 689,104 |
| Asia Capital to Country | 0 | - | 4.96 | 126,177 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,733 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,358 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,830 |
| Capitals of the Stans | 0 | - | 4.95 | 26,604 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,694 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,716 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,822 |
| Name a City - European Countries | 0 | - | 4.91 | 64,850 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,912 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,804 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,514 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,106 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,463 |
| Former Capitals | 0 | - | 4.88 | 71,283 |
| Europe Capital to Country | 0 | - | 4.99 | 248,934 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,157 |
| European Capitals by Map | 0 | - | 4.99 | 137,772 |
| African Capitals by Map | 0 | - | 4.99 | 132,845 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,242 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,609 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,988 |
| European Coastal Capitals | 0 | - | 4.95 | 90,121 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,259 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,816 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,590 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,391 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,630 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,363 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,025 |
| Official Cities in the UK | 0 | - | 4.89 | 282,165 |
| Cities in European History #1 | 0 | - | 4.63 | 133,552 |
| World Capitals Quiz | 0 | - | 5.00 | 5,051,034 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,264 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,990 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,702 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,613 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,928 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,997 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,648 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 146,163 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,041 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,251 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,102 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,739 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,652 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,918 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,793 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,980 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,922 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,354 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,316 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 61,446 |
| Random European Capital to Country | 0 | - | 4.98 | 189,839 |
| Random European Country to Capital | 0 | - | 4.92 | 150,748 |
| Random African Capital to Country | 0 | - | 4.97 | 100,049 |
| Random African Country to Capital | 0 | - | 4.94 | 70,605 |
| Melbourne Suburbs | 0 | - | 4.84 | 52,370 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,976 |
| Countries Bordering Turkey | 0 | - | 4.98 | 116,812 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,471 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,683,113 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,443 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,411 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,610 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,059 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,067 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,327 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,183 |
| Countries by Capital City | 0 | - | 5.00 | 67,489 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,751 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,255 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,747 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,706 |
| Asian Coastal Capitals | 0 | - | 4.52 | 22,095 |
| Moved Capital Cities | 0 | - | 4.96 | 73,891 |
| 10 Westernmost Capital Cities in Asia | 0 | - | 4.62 | 15,887 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,500 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,221 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,144 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,835 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,995 |
| Which City in Europe? | 0 | - | 4.83 | 107,008 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,843 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,947 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,331 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,850 |
| Random Capital to Country | 0 | - | 4.99 | 2,584,332 |
| Random Country to Capital | 0 | - | 4.98 | 915,085 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,094 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,428 |
| North American Sports Cities | 0 | - | 4.83 | 171,390 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,037 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,263 |
| European Cities by Map #1 | 0 | - | 4.67 | 55,645 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,841 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,072 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,325 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,044 |
| Cities in Squares on a Map - Europe | 0 | - | 4.74 | 53,462 |
| Cities by Former Name | 0 | - | 4.84 | 91,271 |
| India State Capitals Quiz | 0 | - | 4.28 | 59,496 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,215 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,449 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,517 |
| World Capitals by Map | 0 | - | 5.00 | 284,819 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,982 |
| Capitals Starting With H | 0 | - | 4.90 | 91,725 |
| Capitals Starting With K | 0 | - | 4.85 | 75,942 |
| Capitals Starting With L | 0 | - | 4.81 | 87,150 |
| Capitals Starting With M | 0 | - | 4.93 | 106,590 |
| Capitals Starting With P | 0 | - | 4.88 | 77,452 |
| Capitals Starting With R | 0 | - | 4.87 | 81,233 |
| Capitals Starting With S | 0 | - | 4.89 | 85,078 |
| Capitals Starting With T | 0 | - | 4.84 | 75,562 |
| Capitals Starting With W | 0 | - | 4.87 | 90,855 |
| Capitals Starting With A | 0 | - | 4.97 | 126,940 |
| Capitals Starting With B | 0 | - | 4.89 | 117,624 |
| Capitals Starting With D | 0 | - | 4.93 | 95,703 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,613 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 93,905 |
| Which City in Canada? | 0 | - | 4.82 | 56,861 |
| Istanbul City Trivia | 0 | - | 4.24 | 12,366 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,785 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,314 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,821 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,600 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,968 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,698 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,580 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 85,221 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,801 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,052 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,578 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,516 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,438 |
| North America Cities by Map | 0 | - | 4.41 | 47,705 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,545 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,949 |
| Random European City to Country | 0 | - | 4.69 | 117,006 |
| Random Asian City to Country | 0 | - | 4.56 | 44,435 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,112 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,545 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,699 |
| Capital Cities Chain | 0 | - | 4.84 | 82,263 |
| Coldest World Capitals | 0 | - | 4.95 | 133,217 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,142 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,392 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,619 |
| US States and State Capitals | 0 | - | 4.99 | 160,252 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,049 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,358 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,771 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,481 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,423 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,156 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,736 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,144 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,984 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,193 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,119 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,724 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,083 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,149 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,422 |
| South American Cities on the Map | 0 | - | 4.56 | 35,312 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,640 |
| 1M Cities by Proximity - United States | 0 | - | 4.56 | 150,127 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.73 | 40,761 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,297 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,351 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 47,976 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 48,602 |
| Cities on Route 66 on a Map | 0 | - | 4.53 | 32,943 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,679 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,281 |
| World Capitals Closest to Jerusalem | 0 | - | 4.47 | 44,869 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,456 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.89 | 125,876 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,241 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 93,951 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,897 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,165 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,143 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,134 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.86 | 93,770 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,813 |
| Random World Capitals on a Map | 0 | - | 4.93 | 133,815 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,948 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 88,953 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,090 |
| Asian Capital Superlatives - Top 2 | 0 | - | 4.37 | 28,022 |
| The Only Country ... | 0 | - | 4.91 | 80,455 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,438 |
| Vietnam War Countries | 0 | - | 4.83 | 93,899 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,547 |
