| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,943 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,491 |
| Africa Capitals Quiz | 0 | - | 4.99 | 734,307 |
| Asia Capitals Quiz | 0 | - | 4.98 | 689,747 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,421 |
| Random European Capital to Country | 0 | - | 4.98 | 190,264 |
| Random European Country to Capital | 0 | - | 4.93 | 161,500 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,950 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,060 |
| Random African Capital to Country | 0 | - | 4.97 | 100,249 |
| Random African Country to Capital | 0 | - | 4.94 | 70,838 |
| World Capitals Quiz | 0 | - | 5.00 | 5,054,532 |
| Europe Capital to Country | 0 | - | 4.99 | 249,122 |
| Asia Capital to Country | 0 | - | 4.96 | 126,256 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,306 |
| European Capitals by Map | 0 | - | 4.99 | 138,029 |
| African Capitals by Map | 0 | - | 4.99 | 132,980 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,830 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,701 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,070 |
| European Coastal Capitals | 0 | - | 4.95 | 90,201 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,390 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,510 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,107 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,640 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,415 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,599 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,579,430 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,590 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,500 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 62,077 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,770 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,767 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,575 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,972 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,913 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,060 |
| Capitals of the Stans | 0 | - | 4.95 | 26,649 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,506 |
| Countries with Megacities | 0 | - | 4.99 | 249,454 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,355 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,678 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,685 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,646 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,583 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,795 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,700 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,108 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,139 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,697 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,308 |
| Countries by Capital City | 0 | - | 5.00 | 67,624 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,824 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,318 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,775 |
| Moved Capital Cities | 0 | - | 4.96 | 73,939 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,791 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,238 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,960 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,485 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,977 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,123 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,033 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,008 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,389 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,363 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,054 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,440 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,138 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,180 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,725 |
| North American Sports Cities | 0 | - | 4.83 | 171,533 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,078 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,104 |
| Name a City - European Countries | 0 | - | 4.91 | 64,988 |
| Cities by Former Name | 0 | - | 4.84 | 91,316 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,254 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,484 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,642 |
| World Capitals by Map | 0 | - | 5.00 | 285,050 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,025 |
| Random Capital to Country | 0 | - | 4.99 | 2,585,455 |
| Random Country to Capital | 0 | - | 4.98 | 916,075 |
| Capitals Starting With H | 0 | - | 4.90 | 91,799 |
| Capitals Starting With K | 0 | - | 4.85 | 75,995 |
| Capitals Starting With L | 0 | - | 4.81 | 87,211 |
| Capitals Starting With M | 0 | - | 4.93 | 106,677 |
| Capitals Starting With P | 0 | - | 4.88 | 77,502 |
| Capitals Starting With R | 0 | - | 4.87 | 81,278 |
| Capitals Starting With S | 0 | - | 4.89 | 85,130 |
| Capitals Starting With T | 0 | - | 4.84 | 75,611 |
| Capitals Starting With W | 0 | - | 4.87 | 90,898 |
| Capitals Starting With A | 0 | - | 4.97 | 127,038 |
| Capitals Starting With B | 0 | - | 4.89 | 117,701 |
| Capitals Starting With D | 0 | - | 4.93 | 95,778 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,146 |
| Olympic Host Countries | 0 | - | 4.98 | 199,803 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,375 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,483 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 306,695 |
| The Only European Country ... | 0 | - | 4.91 | 215,434 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,314 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,476 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,507 |
| Countries of Africa | 0 | - | 5.00 | 2,524,156 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,924 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,557 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,838 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,321 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,898 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,023 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,960 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,557 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,068 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,382 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,974 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,497 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,815 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,976 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,669 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,435 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,144 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,916 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,924 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,176 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,032 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,300 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,897 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,207 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,169 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,754 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,094 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,453 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,199 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,618 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,134 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,588 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,198 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,589 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,799 |
| Former Capitals | 0 | - | 4.88 | 71,314 |
| Capital Cities Chain | 0 | - | 4.84 | 82,322 |
| Coldest World Capitals | 0 | - | 4.95 | 133,255 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,238 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,422 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,489 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,224 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,316 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,680 |
| Countries of the Middle East | 0 | - | 4.96 | 200,087 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,830 |
| Slavic Countries | 0 | - | 4.96 | 111,332 |
| African Island Countries | 0 | - | 4.96 | 101,247 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,719 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,486 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 45,996 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,595 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,687 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,018,362 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,430 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,075 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,871 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,864 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,432 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,364 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,246 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,316 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,442 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,596 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,783 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,991 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,791 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,806 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,653 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,907 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,703 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,956 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,800 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,607 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,437 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,721 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,071 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,876 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,055 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,214 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,417 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,693 |
| Ancient City to Country | 0 | - | 4.70 | 107,835 |
| Official Cities in the UK | 0 | - | 4.89 | 282,432 |
| City-States | 0 | - | 4.53 | 37,200 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,012 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,597 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,424 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,132 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,724 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,162 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,053 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,509 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,314 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,202 |
