| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,270 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,105 |
| Africa Capitals Quiz | 0 | - | 4.99 | 730,136 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,821 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,039 |
| Random European Capital to Country | 0 | - | 4.98 | 189,190 |
| Random European Country to Capital | 0 | - | 4.92 | 147,442 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,392 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,404 |
| Random African Capital to Country | 0 | - | 4.97 | 99,736 |
| Random African Country to Capital | 0 | - | 4.94 | 70,228 |
| World Capitals Quiz | 0 | - | 5.00 | 5,030,688 |
| Europe Capital to Country | 0 | - | 4.99 | 247,716 |
| Asia Capital to Country | 0 | - | 4.96 | 125,745 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,438 |
| European Capitals by Map | 0 | - | 4.99 | 136,233 |
| African Capitals by Map | 0 | - | 4.99 | 132,150 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,121 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,172 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,594 |
| European Coastal Capitals | 0 | - | 4.95 | 89,738 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,176 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,766 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,773 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,415 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,697 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,475 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,093 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,751 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,800 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,206 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,835 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,657 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,404 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,109 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,169 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,699 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,438 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,760 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,743 |
| Capitals of the Stans | 0 | - | 4.95 | 26,403 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,125 |
| Countries with Megacities | 0 | - | 4.99 | 246,775 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,046 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,926 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,472 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,815 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,746 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,388 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,929 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,642 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,592 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,604 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,419 |
| Countries by Capital City | 0 | - | 5.00 | 66,624 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,314 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,899 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,404 |
| Moved Capital Cities | 0 | - | 4.96 | 73,579 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,822 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 20,868 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,662 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,543 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,879 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,573 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,335 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,438 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,195 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,821 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,889 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,870 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,465 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,582 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,249 |
| North American Sports Cities | 0 | - | 4.83 | 170,883 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,914 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,716 |
| Name a City - European Countries | 0 | - | 4.92 | 64,380 |
| Cities by Former Name | 0 | - | 4.84 | 90,959 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,684 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,231 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,918 |
| World Capitals by Map | 0 | - | 5.00 | 283,160 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,657 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,811 |
| Random Country to Capital | 0 | - | 4.98 | 911,498 |
| Capitals Starting With H | 0 | - | 4.90 | 90,861 |
| Capitals Starting With K | 0 | - | 4.85 | 75,678 |
| Capitals Starting With L | 0 | - | 4.81 | 86,825 |
| Capitals Starting With M | 0 | - | 4.93 | 106,040 |
| Capitals Starting With P | 0 | - | 4.88 | 77,182 |
| Capitals Starting With R | 0 | - | 4.87 | 80,966 |
| Capitals Starting With S | 0 | - | 4.89 | 84,797 |
| Capitals Starting With T | 0 | - | 4.84 | 75,285 |
| Capitals Starting With W | 0 | - | 4.89 | 90,603 |
| Capitals Starting With A | 0 | - | 4.97 | 126,543 |
| Capitals Starting With B | 0 | - | 4.89 | 117,286 |
| Capitals Starting With D | 0 | - | 4.93 | 95,374 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,957 |
| Olympic Host Countries | 0 | - | 4.98 | 198,873 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,803 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,528 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,449 |
| The Only European Country ... | 0 | - | 4.91 | 213,797 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,117 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,516 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,200 |
| Countries of Africa | 0 | - | 5.00 | 2,507,516 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,795 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,259 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,620 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,812 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,531 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,878 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,027 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,206 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,133 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,316 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,906 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,387 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,579 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,290 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,534 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,451 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,279 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,256 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,600 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,555 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,798 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,208 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,143 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,092 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,570 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,022 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,305 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,335 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,184 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,103 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,797 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,670 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,327 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,171 |
| Former Capitals | 0 | - | 4.88 | 71,134 |
| Capital Cities Chain | 0 | - | 4.84 | 81,908 |
| Coldest World Capitals | 0 | - | 4.95 | 133,038 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,787 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,984 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,341 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,658 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,290 |
| Countries of the Middle East | 0 | - | 4.96 | 198,884 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,246 |
| Slavic Countries | 0 | - | 4.96 | 110,847 |
| African Island Countries | 0 | - | 4.96 | 100,780 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,496 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,396 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,994 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,102 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,082 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,518 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,778 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,606 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,704 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,752 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,149 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,155 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,277 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,554 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,251 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,392 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,228 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,500 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,180 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,913 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,976 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,836 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,978 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,608 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,824 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,381 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,844 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,927 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,585 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,000 |
| Ancient City to Country | 0 | - | 4.70 | 107,599 |
| Official Cities in the UK | 0 | - | 4.89 | 280,495 |
| City-States | 0 | - | 4.53 | 37,094 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,782 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,479 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,089 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,045 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,468 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 25,790 |
| City Where It Happened #2 | 0 | - | 4.42 | 52,961 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,464 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,105 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,154 |
| Capitals Based on Last Two Letters | 0 | - | 4.48 | 58,678 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,291 |
| Asian Coastal Capitals | 0 | - | 4.52 | 22,031 |
