| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,729 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,884 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,390 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,264 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,688 |
| 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 | 175,403 |
| Random European Capital to Country | 0 | - | 4.98 | 189,714 |
| 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 | 70,490 |
| World Capitals Quiz | 0 | - | 5.00 | 5,047,946 |
| Europe Capital to Country | 0 | - | 4.99 | 248,762 |
| Asia Capital to Country | 0 | - | 4.96 | 126,116 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,043 |
| European Capitals by Map | 0 | - | 4.99 | 137,554 |
| African Capitals by Map | 0 | - | 4.99 | 132,765 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,678 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,558 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,928 |
| European Coastal Capitals | 0 | - | 4.95 | 90,063 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,337 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,096 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,670 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,564 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,306 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,937 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,071 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,941 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,663 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,534 |
| 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 | 97,661 |
| Monarchies of Asia | 0 | - | 4.97 | 70,805 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,603 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,527 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,948 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,756 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,919 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,299 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,699 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,022 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,555 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,990 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,728 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 118,997 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,412 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,572 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,447 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,668 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,354 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,698 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,167 |
| Countries with Megacities | 0 | - | 4.99 | 248,717 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,031 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,485 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,402 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,437 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,396 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,514 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,009 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,005 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,236 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,088 |
| Countries by Capital City | 0 | - | 5.00 | 67,380 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,687 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,208 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,571 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,650 |
| 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 | 76,111 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,850 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,569 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,487 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,718 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,081 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,378 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,249 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,825 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,280 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,055 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,057 |
| North American Sports Cities | 0 | - | 4.83 | 171,339 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,024 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,392 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,373 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,003 |
| Cities by Former Name | 0 | - | 4.84 | 91,223 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,194 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,422 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,892 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,840 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,437 |
| World Capitals by Map | 0 | - | 5.00 | 284,630 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,938 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,531 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,430 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,786 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,176 |
| Random Country to Capital | 0 | - | 4.98 | 914,607 |
| Capitals Starting With H | 0 | - | 4.90 | 91,679 |
| Capitals Starting With K | 0 | - | 4.85 | 75,911 |
| Capitals Starting With L | 0 | - | 4.81 | 87,100 |
| Capitals Starting With M | 0 | - | 4.93 | 106,531 |
| Capitals Starting With P | 0 | - | 4.88 | 77,411 |
| Capitals Starting With R | 0 | - | 4.87 | 81,190 |
| Capitals Starting With S | 0 | - | 4.89 | 85,036 |
| Capitals Starting With T | 0 | - | 4.84 | 75,514 |
| Capitals Starting With W | 0 | - | 4.87 | 90,826 |
| Capitals Starting With A | 0 | - | 4.97 | 126,874 |
| Capitals Starting With B | 0 | - | 4.89 | 117,575 |
| Capitals Starting With D | 0 | - | 4.93 | 95,658 |
| 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 | 103,806 |
| Olympic Host Countries | 0 | - | 4.98 | 199,430 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,209 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,218 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 305,666 |
| The Only European Country ... | 0 | - | 4.91 | 214,969 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,973 |
| Hindu Countries | 0 | - | 4.86 | 49,799 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,222 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,436 |
| Countries of Africa | 0 | - | 5.00 | 2,519,602 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,036 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,601 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,352 |
| Australia A-Z | 0 | - | 4.54 | 49,868 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,122 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,726 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,312 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,801 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,307 |
| 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 | 221,926 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,632 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,507 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,868 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,742 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,996 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,504 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,191 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,072 |
| 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 | 95,420 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,026 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,501 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,818 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,372 |
| 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 | 22,635 |
| Former Capitals | 0 | - | 4.88 | 71,263 |
| Capital Cities Chain | 0 | - | 4.84 | 82,203 |
| Coldest World Capitals | 0 | - | 4.95 | 133,198 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,094 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,268 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,302 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,578 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,090 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,190 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,263 |
| Countries of the Middle East | 0 | - | 4.96 | 199,752 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,679 |
| Slavic Countries | 0 | - | 4.96 | 111,193 |
| African Island Countries | 0 | - | 4.96 | 101,107 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,656 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,419 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,220 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 45,569 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,465 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,520 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,610 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,243 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,925 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,681 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,158 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,144 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,088 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,187 |
| 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 | 98,698 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,549 |
