| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,948 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 226,890 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,327 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,282 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,045 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,532 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,534 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,584 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,772 |
| Random European Capital to Country | 0 | - | 4.98 | 191,204 |
| Random European Country to Capital | 0 | - | 4.93 | 165,362 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,581 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,947 |
| Random African Capital to Country | 0 | - | 4.97 | 100,866 |
| Random African Country to Capital | 0 | - | 4.94 | 71,366 |
| Europe Capital to Country | 0 | - | 4.99 | 250,816 |
| Asia Capital to Country | 0 | - | 4.96 | 126,846 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,170 |
| European Capitals by Map | 0 | - | 4.99 | 139,891 |
| African Capitals by Map | 0 | - | 4.99 | 134,126 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,608 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,277 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,609 |
| European Coastal Capitals | 0 | - | 4.95 | 90,788 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,660 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,760 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,496 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,909 |
| World Capitals Quiz | 0 | - | 5.00 | 5,082,938 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,406 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,515 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,689 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,196 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,500 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,009 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,277 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,241 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,540 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,393 |
| Monarchies of Europe | 0 | - | 4.90 | 98,326 |
| Monarchies of Asia | 0 | - | 4.97 | 71,205 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,004 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,538 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,347 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,232 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,369 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,672 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,733 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,767 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,790 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,383 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,357 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,295 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,224 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,104 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,736 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,388 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,449 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,380 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,407 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,978 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,936 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,098 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,956 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,874 |
| Countries with Megacities | 0 | - | 4.99 | 264,514 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,728 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,461 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,984 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,534 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,437 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,269 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,969 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,516 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,536 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,661 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,469 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,284 |
| Countries by Capital City | 0 | - | 5.00 | 68,605 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,356 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,795 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,063 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,041 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,389 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,941 |
| Moved Capital Cities | 0 | - | 4.96 | 74,330 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,931 |
| Random Asian Capitals on a Map | 0 | - | 4.82 | 51,073 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,903 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,296 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,181 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,660 |
| Hindu Countries | 0 | - | 4.86 | 50,290 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,922 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,169 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,134 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,549 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,725 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,215 |
| North American Sports Cities | 0 | - | 4.83 | 172,625 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,385 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,530 |
| Name a City - European Countries | 0 | - | 4.90 | 65,592 |
| Cities by Former Name | 0 | - | 4.83 | 91,704 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,474 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,746 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,381 |
| World Capitals by Map | 0 | - | 5.00 | 287,359 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,452 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,330 |
| Random Country to Capital | 0 | - | 4.98 | 922,602 |
| Capitals Starting With H | 0 | - | 4.91 | 92,709 |
| Capitals Starting With K | 0 | - | 4.88 | 83,755 |
| Capitals Starting With L | 0 | - | 4.81 | 88,237 |
| Capitals Starting With M | 0 | - | 4.93 | 108,041 |
| Capitals Starting With P | 0 | - | 4.88 | 78,334 |
| Capitals Starting With R | 0 | - | 4.87 | 81,968 |
| Capitals Starting With S | 0 | - | 4.90 | 85,941 |
| Capitals Starting With T | 0 | - | 4.84 | 76,295 |
| Capitals Starting With W | 0 | - | 4.86 | 91,389 |
| Capitals Starting With A | 0 | - | 4.97 | 128,270 |
| Capitals Starting With B | 0 | - | 4.89 | 118,689 |
| Capitals Starting With D | 0 | - | 4.93 | 96,611 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,868 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,506 |
| Olympic Host Countries | 0 | - | 4.98 | 201,081 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,073 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,636 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 310,614 |
| The Only European Country ... | 0 | - | 4.91 | 217,321 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,743 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,527 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,733 |
| Countries of Africa | 0 | - | 5.00 | 2,543,966 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,189 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,889 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,913 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 89,208 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,491 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,511 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,327 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,404 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,084 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,395 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,528 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,395 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,855 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,697 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,714 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,134 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,322 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,478 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,182 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,214 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,489 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,297 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,902 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,332 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,637 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,399 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,617 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 110,931 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,166 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,467 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,362 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 131,074 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,924 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,396 |
| Former Capitals | 0 | - | 4.88 | 71,514 |
| Capital Cities Chain | 0 | - | 4.83 | 82,927 |
| Coldest World Capitals | 0 | - | 4.95 | 133,649 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,751 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,098 |
| Word Puzzles - U.S. State Capitals | 0 | - | 4.63 | 34,764 |
| U.S. State Capitals Where it Doesn't Snow | 0 | - | 4.56 | 51,269 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,570 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,307 |
| Countries of the Middle East | 0 | - | 4.96 | 201,618 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,533 |
| Slavic Countries | 0 | - | 4.96 | 111,867 |
| African Island Countries | 0 | - | 4.96 | 101,849 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,953 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,487 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,592 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.81 | 47,397 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,178 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,339 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,201 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,749 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,795 |
| Countries that Start with A | 0 | - | 4.98 | 2,166,241 |
| Countries that Start with B | 0 | - | 4.95 | 2,297,685 |
| Countries that Start with C | 0 | - | 4.96 | 1,824,722 |
| Countries that Start with D | 0 | - | 4.96 | 711,547 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,419 |
| Countries that Start with G | 0 | - | 4.97 | 1,505,677 |
| Countries that Start with H | 0 | - | 4.96 | 606,097 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,050 |
| Countries that Start with J | 0 | - | 4.98 | 603,707 |
| Countries that Start with K | 0 | - | 4.97 | 817,227 |
