| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,232 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,027 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,662 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,482 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,737 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,431 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,516 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,801 |
| Random European Capital to Country | 0 | - | 4.98 | 190,564 |
| Random European Country to Capital | 0 | - | 4.93 | 164,367 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,157 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,545 |
| Random African Capital to Country | 0 | - | 4.97 | 100,449 |
| Random African Country to Capital | 0 | - | 4.94 | 71,006 |
| World Capitals Quiz | 0 | - | 5.00 | 5,060,963 |
| Europe Capital to Country | 0 | - | 4.99 | 249,463 |
| Asia Capital to Country | 0 | - | 4.96 | 126,415 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,514 |
| European Capitals by Map | 0 | - | 4.99 | 138,434 |
| African Capitals by Map | 0 | - | 4.99 | 133,241 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,008 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,836 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,197 |
| European Coastal Capitals | 0 | - | 4.95 | 90,339 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,482 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,005 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,462 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,715 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,591 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,263 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,955 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,215 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,860 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,943 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,668 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,053 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,042 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,050 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,148 |
| Monarchies of Europe | 0 | - | 4.90 | 97,915 |
| Monarchies of Asia | 0 | - | 4.97 | 70,951 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,757 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,534 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,581,956 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,957 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,095 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,601 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,870 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,455 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,006 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,765 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,694 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,155 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 126,704 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,798 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,838 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,739 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,799 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,599 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,554 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,849 |
| Countries with Megacities | 0 | - | 4.99 | 254,657 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,710 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,894 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,004 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,883 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,791 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,890 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,207 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,232 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,893 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,527 |
| Countries by Capital City | 0 | - | 5.00 | 67,856 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,928 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,424 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,494 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.88 | 11,306 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,919 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,284 |
| Moved Capital Cities | 0 | - | 4.96 | 74,014 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,848 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,168 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,199 |
| Top 10 Richest Countries in Africa | 0 | - | 4.86 | 75,905 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,259 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,208 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,634 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,490 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,301 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,622 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,235 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,309 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,870 |
| North American Sports Cities | 0 | - | 4.83 | 171,717 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,211 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,717 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,617 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,212 |
| Cities by Former Name | 0 | - | 4.83 | 91,401 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,306 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,550 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,950 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,876 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,833 |
| World Capitals by Map | 0 | - | 5.00 | 285,460 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,126 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,298 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,618 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,886 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,439 |
| Random Country to Capital | 0 | - | 4.98 | 917,723 |
| Capitals Starting With H | 0 | - | 4.90 | 91,907 |
| Capitals Starting With K | 0 | - | 4.85 | 76,080 |
| Capitals Starting With L | 0 | - | 4.81 | 87,311 |
| Capitals Starting With M | 0 | - | 4.93 | 106,851 |
| Capitals Starting With P | 0 | - | 4.88 | 77,591 |
| Capitals Starting With R | 0 | - | 4.87 | 81,346 |
| Capitals Starting With S | 0 | - | 4.89 | 85,230 |
| Capitals Starting With T | 0 | - | 4.84 | 75,695 |
| Capitals Starting With W | 0 | - | 4.87 | 90,966 |
| Capitals Starting With A | 0 | - | 4.97 | 127,169 |
| Capitals Starting With B | 0 | - | 4.89 | 117,811 |
| Capitals Starting With D | 0 | - | 4.93 | 95,880 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,997 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,056 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,445 |
| Olympic Host Countries | 0 | - | 4.98 | 200,249 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,553 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,754 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 307,718 |
| The Only European Country ... | 0 | - | 4.91 | 215,881 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,648 |
| Hindu Countries | 0 | - | 4.86 | 49,983 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,696 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,559 |
| Countries of Africa | 0 | - | 5.00 | 2,528,879 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,557 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,807 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,543 |
| Australia A-Z | 0 | - | 4.54 | 49,936 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,983 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,320 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,478 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,151 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,642 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,931 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,114 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,603 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,687 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,054 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,038 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,298 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,131 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,411 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,038 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,222 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,259 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,789 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 78,609 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,111 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,499 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,351 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,740 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,467 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,764 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,645 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,664 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,926 |
| Former Capitals | 0 | - | 4.88 | 71,358 |
| Capital Cities Chain | 0 | - | 4.84 | 82,440 |
| Coldest World Capitals | 0 | - | 4.95 | 133,435 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,355 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,570 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,622 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,789 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,824 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,705 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,061 |
| Countries of the Middle East | 0 | - | 4.96 | 200,664 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,951 |
| Slavic Countries | 0 | - | 4.96 | 111,450 |
| African Island Countries | 0 | - | 4.96 | 101,379 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,775 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,813 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,730 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 46,309 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,732 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,849 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,094 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,611 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,230 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,102 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,777 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,595 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,385 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,487 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,500 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,058 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,931 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,352 |
