| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,729 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,883 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,389 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,253 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,677 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,336 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,270 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,397 |
| Random European Capital to Country | 0 | - | 4.98 | 189,713 |
| 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 | 70,480 |
| World Capitals Quiz | 0 | - | 5.00 | 5,047,862 |
| Europe Capital to Country | 0 | - | 4.99 | 248,760 |
| Asia Capital to Country | 0 | - | 4.96 | 126,115 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,041 |
| European Capitals by Map | 0 | - | 4.99 | 137,543 |
| African Capitals by Map | 0 | - | 4.99 | 132,763 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,676 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,556 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,928 |
| European Coastal Capitals | 0 | - | 4.95 | 90,061 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,336 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,087 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,667 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,563 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,303 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,935 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,069 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,939 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,662 |
| 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 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,885 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,776 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,966 |
| Monarchies of Europe | 0 | - | 4.90 | 97,658 |
| Monarchies of Asia | 0 | - | 4.97 | 70,802 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,602 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,519 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,895 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,756 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,916 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,296 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,697 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,021 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,552 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,986 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,722 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 118,965 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,411 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,571 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,444 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,665 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,343 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,697 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,166 |
| Countries with Megacities | 0 | - | 4.99 | 248,709 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,030 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,484 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,399 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,434 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,394 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,513 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,009 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,003 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,236 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,085 |
| Countries by Capital City | 0 | - | 5.00 | 67,379 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,686 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,204 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,564 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,648 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,227 |
| Moved Capital Cities | 0 | - | 4.96 | 73,845 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,109 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,850 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,555 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,484 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,705 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,081 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,377 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,247 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,816 |
| 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 | 93,056 |
| North American Sports Cities | 0 | - | 4.83 | 171,333 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,024 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,390 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,371 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,001 |
| 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 | 57,416 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,892 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,839 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,434 |
| World Capitals by Map | 0 | - | 5.00 | 284,624 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,938 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,511 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,429 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,785 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,173 |
| Random Country to Capital | 0 | - | 4.98 | 914,596 |
| Capitals Starting With H | 0 | - | 4.90 | 91,676 |
| Capitals Starting With K | 0 | - | 4.85 | 75,909 |
| Capitals Starting With L | 0 | - | 4.81 | 87,099 |
| Capitals Starting With M | 0 | - | 4.93 | 106,525 |
| Capitals Starting With P | 0 | - | 4.88 | 77,408 |
| Capitals Starting With R | 0 | - | 4.87 | 81,187 |
| Capitals Starting With S | 0 | - | 4.89 | 85,034 |
| Capitals Starting With T | 0 | - | 4.84 | 75,511 |
| Capitals Starting With W | 0 | - | 4.87 | 90,823 |
| Capitals Starting With A | 0 | - | 4.97 | 126,871 |
| Capitals Starting With B | 0 | - | 4.89 | 117,572 |
| Capitals Starting With D | 0 | - | 4.93 | 95,657 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,803 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,982 |
| 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 | 114,215 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 305,659 |
| The Only European Country ... | 0 | - | 4.91 | 214,965 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,968 |
| Hindu Countries | 0 | - | 4.86 | 49,799 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,218 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,435 |
| Countries of Africa | 0 | - | 5.00 | 2,519,521 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,036 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,600 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,351 |
| Australia A-Z | 0 | - | 4.54 | 49,868 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,119 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,725 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,312 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,799 |
| 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 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,912 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,924 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,632 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,504 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,866 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,740 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,994 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,503 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,191 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,070 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,709 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 78,282 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,074 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,419 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,023 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,501 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,816 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,370 |
| 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 | 22,632 |
| Former Capitals | 0 | - | 4.88 | 71,263 |
| Capital Cities Chain | 0 | - | 4.84 | 82,203 |
| Coldest World Capitals | 0 | - | 4.95 | 133,196 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,092 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,267 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,299 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,577 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,076 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,184 |
| 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 | 88,676 |
| Slavic Countries | 0 | - | 4.96 | 111,193 |
| African Island Countries | 0 | - | 4.96 | 101,107 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,655 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,419 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,217 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 45,567 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,465 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,519 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,595 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,240 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,919 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,677 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,157 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,139 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,087 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,182 |
| 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 | 98,697 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,547 |
