| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,483 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,236 |
| Africa Capitals Quiz | 0 | - | 4.99 | 731,563 |
| Asia Capitals Quiz | 0 | - | 4.98 | 687,120 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,169 |
| Random European Capital to Country | 0 | - | 4.98 | 189,423 |
| Random European Country to Capital | 0 | - | 4.92 | 147,621 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,489 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,565 |
| Random African Capital to Country | 0 | - | 4.97 | 99,805 |
| Random African Country to Capital | 0 | - | 4.94 | 70,317 |
| World Capitals Quiz | 0 | - | 5.00 | 5,038,818 |
| Europe Capital to Country | 0 | - | 4.99 | 248,274 |
| Asia Capital to Country | 0 | - | 4.96 | 125,892 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,726 |
| European Capitals by Map | 0 | - | 4.99 | 136,870 |
| African Capitals by Map | 0 | - | 4.99 | 132,394 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,411 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,373 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,762 |
| European Coastal Capitals | 0 | - | 4.95 | 89,909 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,247 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,460 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,195 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,475 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,937 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,256 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,573,495 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,892 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,398 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,779 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,538 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,307 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,293 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,786 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,651 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,864 |
| Capitals of the Stans | 0 | - | 4.95 | 26,496 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,721 |
| Countries with Megacities | 0 | - | 4.99 | 247,794 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,580 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,245 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,968 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,192 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,025 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,530 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,232 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,845 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,792 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,939 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,758 |
| Countries by Capital City | 0 | - | 5.00 | 66,983 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,499 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 114,037 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,516 |
| Moved Capital Cities | 0 | - | 4.96 | 73,711 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,195 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,760 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,771 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,884 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,084 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,890 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,621 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,255 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,084 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,344 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,074 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,581 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,861 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,446 |
| North American Sports Cities | 0 | - | 4.83 | 171,061 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,961 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,859 |
| Name a City - European Countries | 0 | - | 4.92 | 64,602 |
| Cities by Former Name | 0 | - | 4.84 | 91,074 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,770 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,317 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,144 |
| World Capitals by Map | 0 | - | 5.00 | 283,957 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,780 |
| Random Capital to Country | 0 | - | 4.99 | 2,580,089 |
| Random Country to Capital | 0 | - | 4.98 | 912,879 |
| Capitals Starting With H | 0 | - | 4.90 | 91,468 |
| Capitals Starting With K | 0 | - | 4.85 | 75,806 |
| Capitals Starting With L | 0 | - | 4.81 | 86,970 |
| Capitals Starting With M | 0 | - | 4.93 | 106,295 |
| Capitals Starting With P | 0 | - | 4.88 | 77,301 |
| Capitals Starting With R | 0 | - | 4.87 | 81,077 |
| Capitals Starting With S | 0 | - | 4.89 | 84,931 |
| Capitals Starting With T | 0 | - | 4.84 | 75,400 |
| Capitals Starting With W | 0 | - | 4.89 | 90,719 |
| Capitals Starting With A | 0 | - | 4.97 | 126,710 |
| Capitals Starting With B | 0 | - | 4.89 | 117,427 |
| Capitals Starting With D | 0 | - | 4.93 | 95,518 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,339 |
| Olympic Host Countries | 0 | - | 4.98 | 199,082 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,945 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,833 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 304,436 |
| The Only European Country ... | 0 | - | 4.91 | 214,305 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,475 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,831 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,343 |
| Countries of Africa | 0 | - | 5.00 | 2,512,443 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,838 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,350 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,696 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,997 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,650 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,926 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,569 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,456 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,459 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,225 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,544 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,112 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,532 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,732 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,369 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,707 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,659 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,456 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,388 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,738 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,654 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,915 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,355 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,176 |
| Southernmost Major Cities | 0 | - | 4.48 | 56,434 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,647 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,042 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,352 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,509 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,318 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,398 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,082 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,834 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,408 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,397 |
| Former Capitals | 0 | - | 4.88 | 71,196 |
| Capital Cities Chain | 0 | - | 4.84 | 82,034 |
| Coldest World Capitals | 0 | - | 4.95 | 133,111 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,923 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,074 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,123 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,773 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,210 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,710 |
| Countries of the Middle East | 0 | - | 4.96 | 199,252 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,428 |
| Slavic Countries | 0 | - | 4.96 | 110,995 |
| African Island Countries | 0 | - | 4.96 | 100,911 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,565 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,828 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 45,234 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,281 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,299 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,784 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,941 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,640 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,342 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,797 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,294 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,829 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,851 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,934 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,218 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,283 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,441 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,683 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,421 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,527 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,378 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,616 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,366 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,240 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,208 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,044 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,104 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,650 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,889 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,555 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,907 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,019 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,717 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,352 |
| Ancient City to Country | 0 | - | 4.70 | 107,671 |
| Official Cities in the UK | 0 | - | 4.89 | 281,067 |
| City-States | 0 | - | 4.53 | 37,131 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,836 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,524 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,180 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,073 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,544 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 25,908 |
| City Where It Happened #2 | 0 | - | 4.42 | 52,998 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,483 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,184 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,166 |
| Capitals Based on Last Two Letters | 0 | - | 4.48 | 58,718 |
