| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,729 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,390 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,262 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,684 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,270 |
| Random European Capital to Country | 0 | - | 4.98 | 189,714 |
| Random European Country to Capital | 0 | - | 4.92 | 147,812 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,619 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,749 |
| Random African Capital to Country | 0 | - | 4.97 | 99,993 |
| Random African Country to Capital | 0 | - | 4.94 | 70,488 |
| World Capitals Quiz | 0 | - | 5.00 | 5,047,918 |
| Europe Capital to Country | 0 | - | 4.99 | 248,761 |
| Asia Capital to Country | 0 | - | 4.96 | 126,116 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,043 |
| European Capitals by Map | 0 | - | 4.99 | 137,547 |
| African Capitals by Map | 0 | - | 4.99 | 132,765 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,678 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,557 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,928 |
| European Coastal Capitals | 0 | - | 4.95 | 90,063 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,337 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,089 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,670 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,563 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,243 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,924 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,680 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,525 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,937 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,937 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,071 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,941 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,663 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,533 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,462 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,899 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,776 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,966 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 134,564 |
| Capitals of the Stans | 0 | - | 4.95 | 26,585 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,167 |
| Countries with Megacities | 0 | - | 4.99 | 248,716 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,031 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,485 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,401 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,437 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,395 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,699 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,514 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,009 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,004 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,236 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,088 |
| Countries by Capital City | 0 | - | 5.00 | 67,380 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,686 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,205 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,649 |
| Moved Capital Cities | 0 | - | 4.96 | 73,845 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,555 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,268 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,024 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,884 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,110 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,348 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,698 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,568 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,850 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,336 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,249 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,822 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,279 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,055 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,057 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,600 |
| North American Sports Cities | 0 | - | 4.83 | 171,338 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,024 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,002 |
| Name a City - European Countries | 0 | - | 4.91 | 64,782 |
| Cities by Former Name | 0 | - | 4.84 | 91,222 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,194 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,420 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,437 |
| World Capitals by Map | 0 | - | 5.00 | 284,629 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,938 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,524 |
| Random Country to Capital | 0 | - | 4.98 | 914,606 |
| Capitals Starting With H | 0 | - | 4.90 | 91,678 |
| Capitals Starting With K | 0 | - | 4.85 | 75,911 |
| Capitals Starting With L | 0 | - | 4.81 | 87,100 |
| Capitals Starting With M | 0 | - | 4.93 | 106,530 |
| Capitals Starting With P | 0 | - | 4.88 | 77,410 |
| Capitals Starting With R | 0 | - | 4.87 | 81,189 |
| Capitals Starting With S | 0 | - | 4.89 | 85,035 |
| Capitals Starting With T | 0 | - | 4.84 | 75,513 |
| Capitals Starting With W | 0 | - | 4.87 | 90,825 |
| Capitals Starting With A | 0 | - | 4.97 | 126,873 |
| Capitals Starting With B | 0 | - | 4.89 | 117,574 |
| Capitals Starting With D | 0 | - | 4.93 | 95,658 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,805 |
| Olympic Host Countries | 0 | - | 4.98 | 199,429 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,209 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,217 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 305,666 |
| The Only European Country ... | 0 | - | 4.91 | 214,969 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,972 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,220 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,435 |
| Countries of Africa | 0 | - | 5.00 | 2,519,588 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,892 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,430 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,786 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,174 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,803 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,982 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,121 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,726 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,312 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,800 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,306 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,686 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,865 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,585 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,912 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,925 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,632 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,507 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,868 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,742 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,995 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,504 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,191 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,071 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,709 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,074 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,420 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,025 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,501 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,818 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,372 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,046 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,516 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,634 |
| Former Capitals | 0 | - | 4.88 | 71,263 |
| Capital Cities Chain | 0 | - | 4.84 | 82,203 |
| Coldest World Capitals | 0 | - | 4.95 | 133,198 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,093 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,301 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,036 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,086 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,263 |
| Countries of the Middle East | 0 | - | 4.96 | 199,751 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,677 |
| Slavic Countries | 0 | - | 4.96 | 111,193 |
| African Island Countries | 0 | - | 4.96 | 101,107 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,656 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,219 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 45,569 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,465 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,520 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,601 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,158 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,143 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,088 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,185 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,375 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,480 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,663 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,850 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,633 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,698 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,549 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,795 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,578 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,643 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,546 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,404 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,308 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,689 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,996 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,758 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,994 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,128 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,874 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,557 |
| Ancient City to Country | 0 | - | 4.70 | 107,775 |
| Official Cities in the UK | 0 | - | 4.89 | 281,780 |
| City-States | 0 | - | 4.53 | 37,168 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,936 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,572 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,305 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,112 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,641 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,052 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,025 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,500 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,261 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,184 |
| Capitals Based on Last Two Letters | 0 | - | 4.48 | 58,763 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,403 |
