| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,245 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,647 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,084 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,950 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,572 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,179 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,995 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,918 |
| Random European Capital to Country | 0 | - | 4.98 | 189,149 |
| Random European Country to Capital | 0 | - | 4.92 | 147,396 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,341 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,371 |
| Random African Capital to Country | 0 | - | 4.97 | 99,711 |
| Random African Country to Capital | 0 | - | 4.94 | 70,197 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,612 |
| Europe Capital to Country | 0 | - | 4.99 | 247,465 |
| Asia Capital to Country | 0 | - | 4.96 | 125,710 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,399 |
| European Capitals by Map | 0 | - | 4.99 | 136,157 |
| African Capitals by Map | 0 | - | 4.99 | 132,113 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,080 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,146 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,578 |
| European Coastal Capitals | 0 | - | 4.95 | 89,714 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,170 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,646 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,688 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,407 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,080 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,089 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,763 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,631 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,380 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,080 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,140 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,680 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,685 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,414 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,744 |
| Monarchies of Europe | 0 | - | 4.90 | 97,282 |
| Monarchies of Asia | 0 | - | 4.97 | 70,582 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,421 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,504 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,370 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,385 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,644 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,870 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,376 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,471 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,785 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,195 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,342 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,207 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,054 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,211 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,089 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,481 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,530 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,489 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,011 |
| Countries with Megacities | 0 | - | 4.99 | 246,558 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,933 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,811 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,379 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,761 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,703 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,894 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,620 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,574 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,563 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,362 |
| Countries by Capital City | 0 | - | 5.00 | 66,574 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,292 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,872 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,253 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,393 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,146 |
| Moved Capital Cities | 0 | - | 4.96 | 73,560 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,510 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,411 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,077 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,155 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,110 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,922 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,086 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,783 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,834 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,828 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,444 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,551 |
| North American Sports Cities | 0 | - | 4.83 | 170,858 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,906 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,872 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,048 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,697 |
| Cities by Former Name | 0 | - | 4.84 | 90,938 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,673 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,223 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,790 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,782 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,882 |
| World Capitals by Map | 0 | - | 5.00 | 283,091 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,640 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,510 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,246 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,606 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,797 |
| Random Country to Capital | 0 | - | 4.98 | 911,324 |
| Capitals Starting With H | 0 | - | 4.90 | 90,668 |
| Capitals Starting With K | 0 | - | 4.85 | 75,653 |
| Capitals Starting With L | 0 | - | 4.81 | 86,797 |
| Capitals Starting With M | 0 | - | 4.93 | 106,005 |
| Capitals Starting With P | 0 | - | 4.88 | 77,155 |
| Capitals Starting With R | 0 | - | 4.87 | 80,944 |
| Capitals Starting With S | 0 | - | 4.89 | 84,776 |
| Capitals Starting With T | 0 | - | 4.84 | 75,264 |
| Capitals Starting With W | 0 | - | 4.89 | 90,585 |
| Capitals Starting With A | 0 | - | 4.97 | 126,500 |
| Capitals Starting With B | 0 | - | 4.89 | 117,247 |
| Capitals Starting With D | 0 | - | 4.93 | 95,345 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,511 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,873 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,901 |
| Olympic Host Countries | 0 | - | 4.98 | 198,840 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,778 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,474 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,255 |
| The Only European Country ... | 0 | - | 4.91 | 213,719 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,045 |
| Hindu Countries | 0 | - | 4.85 | 49,542 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,457 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,182 |
| Countries of Africa | 0 | - | 5.00 | 2,506,636 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,311 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,304 |
| Australia A-Z | 0 | - | 4.54 | 49,777 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,943 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,160 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,116 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,267 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,862 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,361 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,545 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,504 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,406 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,245 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,226 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,571 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,533 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,771 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,168 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,140 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,083 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,567 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,364 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,017 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,298 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,317 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,158 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,054 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,754 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,639 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,309 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,116 |
| Former Capitals | 0 | - | 4.88 | 71,129 |
| Capital Cities Chain | 0 | - | 4.84 | 81,889 |
| Coldest World Capitals | 0 | - | 4.95 | 133,029 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,766 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,957 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,168 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,426 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,396 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,233 |
| Countries of the Middle East | 0 | - | 4.96 | 198,839 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,218 |
| Slavic Countries | 0 | - | 4.96 | 110,820 |
| African Island Countries | 0 | - | 4.96 | 100,749 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,482 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,882 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,290 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,956 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,074 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,041 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,273 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,668 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,449 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,042 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,748 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,577 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,673 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,734 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,133 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,139 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,256 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,540 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,221 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,376 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,202 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,480 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,968 |
