| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,022 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,245 |
| Europe Capital to Country | 0 | - | 4.99 | 250,925 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,233 |
| European Capitals by Map | 0 | - | 4.99 | 140,027 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,311 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,654 |
| European Coastal Capitals | 0 | - | 4.95 | 90,841 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,617 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,971 |
| Official Cities in the UK | 0 | - | 4.89 | 284,584 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,222 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,546 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,310 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,428 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,429 |
| Cities in European History #1 | 0 | - | 4.63 | 134,227 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 70,411 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 149,412 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,784 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,304 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,694 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,604 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,807 |
| Random European Capital to Country | 0 | - | 4.98 | 191,496 |
| Random European Country to Capital | 0 | - | 4.93 | 165,418 |
| Name a City - European Countries | 0 | - | 4.90 | 65,639 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,951 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,906 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,958 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,277 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,542 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,585 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 110,984 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,415 |
| Former Capitals | 0 | - | 4.88 | 71,530 |
| Asia Capital to Country | 0 | - | 4.96 | 126,887 |
| African Capitals by Map | 0 | - | 4.99 | 134,202 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,668 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,681 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,932 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,934 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,677 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,389 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,441 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,693 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,630 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,734 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,041 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,560 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,800 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,283 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,243 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,060 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,699 |
| World Capitals Quiz | 0 | - | 5.00 | 5,085,052 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,274 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,285 |
| Capitals of the Stans | 0 | - | 4.95 | 26,927 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,582 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,693,155 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,499 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 48,586 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,259 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,798 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,398 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,303 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,619 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,020 |
| Random African Capital to Country | 0 | - | 4.97 | 100,929 |
| Random African Country to Capital | 0 | - | 4.94 | 71,392 |
| Melbourne Suburbs | 0 | - | 4.86 | 53,585 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,845 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,289 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,227 |
| British Places A-Z | 0 | - | 4.29 | 79,961 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 64,975 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,322 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,002 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,214 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,050 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,943 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,090 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,323 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,936 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,190 |
| Which City in Europe? | 0 | - | 4.83 | 107,587 |
| Boroughs of London | 0 | - | 4.63 | 88,126 |
| London Geography | 0 | - | 4.47 | 59,747 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,714 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,115 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,781 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,670 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,550 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,689 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,856 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,089 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,491 |
| North American Sports Cities | 0 | - | 4.83 | 172,666 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,410 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,601 |
| 20 Northernmost English Cities | 0 | - | 4.49 | 23,861 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,467 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,584 |
| Name a Valid World City | 0 | - | 4.84 | 71,495 |
| Cities by Former Name | 0 | - | 4.83 | 91,741 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,495 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,570 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,571 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,768 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,708 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,524 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,371 |
| Countries by Capital City | 0 | - | 5.00 | 68,674 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,399 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,837 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,433 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,421 |
| Moved Capital Cities | 0 | - | 4.96 | 74,366 |
| World Capitals by Map | 0 | - | 5.00 | 287,548 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,487 |
| Random Capital to Country | 0 | - | 4.99 | 2,595,036 |
| Europe Capitals - One Minute Sprint | 0 | - | 4.40 | 201,489 |
| World Capitals Closest to Madrid | 0 | - | 4.50 | 42,430 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,650 |
| Random Country to Capital | 0 | - | 4.98 | 923,046 |
| Capitals Starting With H | 0 | - | 4.91 | 92,741 |
| Capitals Starting With K | 0 | - | 4.88 | 83,790 |
| Capitals Starting With L | 0 | - | 4.81 | 88,262 |
| Capitals Starting With M | 0 | - | 4.93 | 108,093 |
| Capitals Starting With P | 0 | - | 4.88 | 78,364 |
| Capitals Starting With R | 0 | - | 4.87 | 81,990 |
| Capitals Starting With S | 0 | - | 4.90 | 85,969 |
| Capitals Starting With T | 0 | - | 4.84 | 76,322 |
| Capitals Starting With W | 0 | - | 4.87 | 91,406 |
| Capitals Starting With A | 0 | - | 4.97 | 128,312 |
| Capitals Starting With B | 0 | - | 4.89 | 118,731 |
| Capitals Starting With D | 0 | - | 4.93 | 96,644 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 89,249 |
| US States and State Capitals | 0 | - | 4.99 | 163,592 |
| Which City in Canada? | 0 | - | 4.83 | 57,151 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,515 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,516 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,403 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,138 |
| Ancient Greek Words | 0 | - | 4.93 | 111,930 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,898 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,184 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,799 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,867 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,529 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,314 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,937 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,352 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,651 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,425 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,624 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,631 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,387 |
| European Cities by Map #1 | 0 | - | 4.67 | 55,801 |
| North America Cities by Map | 0 | - | 4.41 | 47,854 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,907 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,159 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,231 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,540 |
| Random European City to Country | 0 | - | 4.69 | 117,902 |
| Random Asian City to Country | 0 | - | 4.56 | 44,562 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,117 |
| Cities in Squares on a Map - Europe | 0 | - | 4.70 | 54,042 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,965 |
| Random Cities Near Paris on a Map | 0 | - | 4.55 | 39,631 |
| Capital Cities Chain | 0 | - | 4.84 | 82,978 |
| Coldest World Capitals | 0 | - | 4.95 | 133,668 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,784 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,131 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 67,918 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,251 |
| Which City in Germany? | 0 | - | 4.50 | 136,815 |
| Which City in Italy? | 0 | - | 4.68 | 90,309 |
| Which City in France? | 0 | - | 4.64 | 73,194 |
| Which City in Spain? | 0 | - | 4.50 | 50,011 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,821 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,753 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,883 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,867 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,233 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,554 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,568 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,273 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,693 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,374 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,587 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,577 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,872 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,744 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.99 | 101,852 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,931 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,434 |
| South American Cities on the Map | 0 | - | 4.53 | 35,473 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,747 |
