| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,339 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 226,904 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,059 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,666 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,677 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,790 |
| Random European Capital to Country | 0 | - | 4.98 | 191,341 |
| Random European Country to Capital | 0 | - | 4.93 | 165,376 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,590 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,957 |
| Random African Capital to Country | 0 | - | 4.97 | 100,905 |
| Random African Country to Capital | 0 | - | 4.94 | 71,369 |
| World Capitals Quiz | 0 | - | 5.00 | 5,083,581 |
| Europe Capital to Country | 0 | - | 4.99 | 250,859 |
| Asia Capital to Country | 0 | - | 4.96 | 126,861 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,193 |
| European Capitals by Map | 0 | - | 4.99 | 139,940 |
| African Capitals by Map | 0 | - | 4.99 | 134,149 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,623 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,286 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,626 |
| European Coastal Capitals | 0 | - | 4.95 | 90,802 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,669 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,805 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,522 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,920 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,226 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,773 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,821 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,619 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,663 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,499 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,555 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,701 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,206 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,512 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,021 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,293 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,545 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,402 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,460 |
| Capitals of the Stans | 0 | - | 4.95 | 26,910 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,914 |
| Countries with Megacities | 0 | - | 4.99 | 264,597 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,751 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,474 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,014 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,548 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,507 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,240 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,534 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,548 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,679 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,485 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,306 |
| Countries by Capital City | 0 | - | 5.00 | 68,631 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,371 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,806 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,409 |
| Moved Capital Cities | 0 | - | 4.96 | 74,341 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,702 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,934 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,634 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,292 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,681 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,267 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,988 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,112 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,760 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,589 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,534 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,944 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,198 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,153 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,563 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,737 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,221 |
| North American Sports Cities | 0 | - | 4.83 | 172,640 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,391 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,545 |
| Name a City - European Countries | 0 | - | 4.90 | 65,611 |
| Name a Valid World City | 0 | - | 4.83 | 71,456 |
| Cities by Former Name | 0 | - | 4.83 | 91,717 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,479 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,755 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,387 |
| World Capitals by Map | 0 | - | 5.00 | 287,418 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,468 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,547 |
| Random Country to Capital | 0 | - | 4.98 | 922,713 |
| Capitals Starting With H | 0 | - | 4.91 | 92,720 |
| Capitals Starting With K | 0 | - | 4.88 | 83,767 |
| Capitals Starting With L | 0 | - | 4.81 | 88,249 |
| Capitals Starting With M | 0 | - | 4.93 | 108,061 |
| Capitals Starting With P | 0 | - | 4.88 | 78,343 |
| Capitals Starting With R | 0 | - | 4.87 | 81,975 |
| Capitals Starting With S | 0 | - | 4.90 | 85,953 |
| Capitals Starting With T | 0 | - | 4.84 | 76,302 |
| Capitals Starting With W | 0 | - | 4.86 | 91,394 |
| Capitals Starting With A | 0 | - | 4.97 | 128,291 |
| Capitals Starting With B | 0 | - | 4.89 | 118,706 |
| Capitals Starting With D | 0 | - | 4.93 | 96,623 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,545 |
| Olympic Host Countries | 0 | - | 4.98 | 201,096 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,094 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,660 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 310,721 |
| The Only European Country ... | 0 | - | 4.91 | 217,365 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,780 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,563 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,737 |
| Countries of Africa | 0 | - | 5.00 | 2,544,614 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,043 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,937 |
| Random Asian Capitals on a Map | 0 | - | 4.82 | 51,081 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,925 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,302 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,185 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,440 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,874 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,701 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,729 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,153 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,334 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,491 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,985 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,195 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,230 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,510 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,300 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,911 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,337 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,641 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,410 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,262 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,487 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,947 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,172 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,621 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 110,949 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,190 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,491 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,377 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 131,086 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,938 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,409 |
| Former Capitals | 0 | - | 4.88 | 71,517 |
| Capital Cities Chain | 0 | - | 4.83 | 82,945 |
| Coldest World Capitals | 0 | - | 4.95 | 133,652 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,768 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,109 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,900 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,633 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,345 |
| Countries of the Middle East | 0 | - | 4.96 | 201,655 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,546 |
| Slavic Countries | 0 | - | 4.96 | 111,876 |
| African Island Countries | 0 | - | 4.96 | 101,864 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,960 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,620 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.81 | 47,429 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,192 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,353 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,690 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,609 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,335 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,906 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,010 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,706 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,390 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,425 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,787 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,469 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,356 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,219 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,432 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 89,229 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,325 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,229 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,653 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,335 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,874 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,574 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,521 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,317 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,522 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,907 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,209 |
| Ancient City to Country | 0 | - | 4.70 | 108,141 |
| Official Cities in the UK | 0 | - | 4.89 | 284,492 |
| City-States | 0 | - | 4.53 | 37,307 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,269 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,718 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,957 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,209 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,172 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,667 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,151 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,561 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,609 |
