| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,471 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,194 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,210 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,320 |
| Asia Capitals Quiz | 0 | - | 4.98 | 696,332 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,900 |
| Random European Capital to Country | 0 | - | 4.98 | 191,732 |
| Random European Country to Capital | 0 | - | 4.93 | 165,590 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,838 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,194 |
| Random African Capital to Country | 0 | - | 4.97 | 101,085 |
| Random African Country to Capital | 0 | - | 4.94 | 71,548 |
| World Capitals Quiz | 0 | - | 5.00 | 5,091,798 |
| Europe Capital to Country | 0 | - | 4.99 | 251,361 |
| Asia Capital to Country | 0 | - | 4.96 | 127,085 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,509 |
| European Capitals by Map | 0 | - | 4.99 | 141,061 |
| African Capitals by Map | 0 | - | 4.99 | 140,665 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,424 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,542 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,902 |
| European Coastal Capitals | 0 | - | 4.95 | 91,009 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,022 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,460 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,027 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,805 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,594,073 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,460 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,113 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,900 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,334 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,710 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,189 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,405 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,714 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,518 |
| Capitals of the Stans | 0 | - | 4.95 | 27,025 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,329 |
| Countries with Megacities | 0 | - | 4.99 | 265,548 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,124 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,691 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,386 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,761 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,852 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,387 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,808 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,726 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,919 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,811 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,653 |
| Countries by Capital City | 0 | - | 5.00 | 68,938 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,559 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,980 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,566 |
| Moved Capital Cities | 0 | - | 4.96 | 74,470 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,083 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,711 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,396 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,984 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,454 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,507 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,740 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,982 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,682 |
| Single Vowel Capitals | 0 | - | 4.82 | 14,628 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,069 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,509 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,354 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,683 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,900 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,355 |
| North American Sports Cities | 0 | - | 4.83 | 172,846 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,461 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,731 |
| Name a City - European Countries | 0 | - | 4.90 | 65,857 |
| Name a Valid World City | 0 | - | 4.84 | 71,634 |
| Cities by Former Name | 0 | - | 4.83 | 91,846 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,566 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,847 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,560 |
| World Capitals by Map | 0 | - | 5.00 | 288,268 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,630 |
| Random Capital to Country | 0 | - | 4.99 | 2,596,971 |
| Random Country to Capital | 0 | - | 4.98 | 924,587 |
| Capitals Starting With H | 0 | - | 4.91 | 92,858 |
| Capitals Starting With K | 0 | - | 4.88 | 83,905 |
| Capitals Starting With L | 0 | - | 4.81 | 88,377 |
| Capitals Starting With M | 0 | - | 4.93 | 108,310 |
| Capitals Starting With P | 0 | - | 4.88 | 78,493 |
| Capitals Starting With R | 0 | - | 4.87 | 82,094 |
| Capitals Starting With S | 0 | - | 4.90 | 86,083 |
| Capitals Starting With T | 0 | - | 4.85 | 76,424 |
| Capitals Starting With W | 0 | - | 4.87 | 91,467 |
| Capitals Starting With A | 0 | - | 4.97 | 128,467 |
| Capitals Starting With B | 0 | - | 4.89 | 118,882 |
| Capitals Starting With D | 0 | - | 4.93 | 96,766 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,055 |
| Olympic Host Countries | 0 | - | 4.98 | 201,431 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,487 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,473 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 311,865 |
| The Only European Country ... | 0 | - | 4.91 | 218,003 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,196 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,984 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,801 |
| Countries of Africa | 0 | - | 5.00 | 2,550,096 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,090 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,081 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,197 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,139 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,427 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,230 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,075 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,064 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,777 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,947 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,345 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,479 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,622 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,051 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,395 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,457 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,641 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,367 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,035 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,395 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,704 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,540 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,287 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,581 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 73,008 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,201 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,667 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,146 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,612 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,877 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,666 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,417 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,341 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,553 |
| Former Capitals | 0 | - | 4.88 | 71,580 |
| Capital Cities Chain | 0 | - | 4.84 | 83,108 |
| Coldest World Capitals | 0 | - | 4.95 | 134,019 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,899 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 22,036 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,254 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 145,115 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,510 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,938 |
| Countries of the Middle East | 0 | - | 4.96 | 202,066 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,797 |
| Slavic Countries | 0 | - | 4.96 | 112,082 |
| African Island Countries | 0 | - | 4.96 | 102,133 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,027 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,924 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 52,193 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,368 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,565 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,658 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,445 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,999 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,170 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,847 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,908 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,182 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,254 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,816 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,569 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,742 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,214 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,961 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,617 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,869 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,873 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,476 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,782 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,579 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,211 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,584 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,917 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,692 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,701 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,373 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,625 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,022 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,480 |
| Ancient City to Country | 0 | - | 4.70 | 108,219 |
| Official Cities in the UK | 0 | - | 4.89 | 285,138 |
| City-States | 0 | - | 4.53 | 37,337 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,414 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,750 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,088 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,228 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,272 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,810 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,177 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,572 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,672 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,264 |
