| Countries of the Soviet Union | 0 | - | 4.98 | 194,145 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,426 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,636 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,500 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,251 |
| Random European Capital to Country | 0 | - | 4.98 | 189,666 |
| Random European Country to Capital | 0 | - | 4.92 | 147,771 |
| Name a City - European Countries | 0 | - | 4.91 | 64,752 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,820 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,417 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,967 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,322 |
| Former Capitals | 0 | - | 4.88 | 71,246 |
| Europe Capital to Country | 0 | - | 4.99 | 248,661 |
| Asia Capital to Country | 0 | - | 4.96 | 126,075 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,969 |
| European Capitals by Map | 0 | - | 4.99 | 137,430 |
| African Capitals by Map | 0 | - | 4.99 | 132,707 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,756 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,643 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,526 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,900 |
| European Coastal Capitals | 0 | - | 4.95 | 90,036 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,311 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,928 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,580 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,541 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,830 |
| Official Cities in the UK | 0 | - | 4.89 | 281,649 |
| Cities in European History #1 | 0 | - | 4.63 | 133,466 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,940 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,911 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,647 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,435 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,878 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,752 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,948 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,536 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.97 | 145,863 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,877 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,154 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,034 |
| World Capitals Quiz | 0 | - | 5.00 | 5,046,164 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,671 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,486 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,863 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,002 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,540 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,790 |
| Capitals of the Stans | 0 | - | 4.95 | 26,570 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,681,792 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,356 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,351 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,285 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,170 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,815 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,879 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,319 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,417 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,764 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,148 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,603 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,708 |
| Random African Capital to Country | 0 | - | 4.97 | 99,949 |
| Random African Country to Capital | 0 | - | 4.94 | 70,435 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,779 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,972 |
| Melbourne Suburbs | 0 | - | 4.84 | 52,177 |
| Which City in Europe? | 0 | - | 4.83 | 106,955 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,757 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,713 |
| European Capitals by Airport Code | 0 | - | 4.93 | 35,718 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,333 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,318 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,452 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,975 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,946 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,155 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,012 |
| Countries by Capital City | 0 | - | 5.00 | 67,284 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,632 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,168 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,440 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,620 |
| Moved Capital Cities | 0 | - | 4.96 | 73,818 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 74,916 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,992 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,535 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 93,829 |
| Which City in Canada? | 0 | - | 4.82 | 56,827 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,812 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,359 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,715 |
| North American Sports Cities | 0 | - | 4.83 | 171,289 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,013 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,248 |
| European Cities by Map #1 | 0 | - | 4.67 | 55,624 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,832 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,057 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,273 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,981 |
| Cities in Squares on a Map - Europe | 0 | - | 4.74 | 53,392 |
| Name a Valid World City | 0 | - | 4.83 | 70,467 |
| Cities by Former Name | 0 | - | 4.84 | 91,199 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,177 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,397 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,379 |
| World Capitals by Map | 0 | - | 5.00 | 284,513 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,909 |
| Random Capital to Country | 0 | - | 4.99 | 2,582,884 |
| Random Country to Capital | 0 | - | 4.98 | 914,255 |
| Capitals Starting With H | 0 | - | 4.90 | 91,649 |
| Capitals Starting With K | 0 | - | 4.85 | 75,891 |
| Capitals Starting With L | 0 | - | 4.81 | 87,074 |
| Capitals Starting With M | 0 | - | 4.93 | 106,472 |
| Capitals Starting With P | 0 | - | 4.88 | 77,392 |
| Capitals Starting With R | 0 | - | 4.87 | 81,159 |
| Capitals Starting With S | 0 | - | 4.89 | 85,020 |
| Capitals Starting With T | 0 | - | 4.84 | 75,484 |
| Capitals Starting With W | 0 | - | 4.89 | 90,798 |
| Capitals Starting With A | 0 | - | 4.97 | 126,834 |
| Capitals Starting With B | 0 | - | 4.89 | 117,543 |
| Capitals Starting With D | 0 | - | 4.93 | 95,626 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,553 |
| US States and State Capitals | 0 | - | 4.99 | 159,810 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,414 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,419 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,012 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,689 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,589 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,492 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,358 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,277 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,979 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,348 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,558 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,853 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 343,205 |
| 50 Biggest Cities in 1920 on a World Map | 0 | - | 4.99 | 77,059 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,606 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,484 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,849 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,731 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,977 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,472 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,843 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,113 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,502 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,412 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,398 |
| South American Cities on the Map | 0 | - | 4.56 | 35,294 |
| North America Cities by Map | 0 | - | 4.41 | 47,682 |
| 1M Cities by Proximity - United States | 0 | - | 4.56 | 150,057 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,470 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,747 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.73 | 40,717 |
| Random European City to Country | 0 | - | 4.69 | 116,882 |
| Random Asian City to Country | 0 | - | 4.56 | 44,428 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,008 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,269 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,280 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 47,893 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 48,539 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,502 |
| Cities on Route 66 on a Map | 0 | - | 4.53 | 32,917 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,626 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,594 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,248 |
| World Capitals Closest to Jerusalem | 0 | - | 4.47 | 44,862 |
| Capital Cities Chain | 0 | - | 4.84 | 82,165 |
| Coldest World Capitals | 0 | - | 4.95 | 133,182 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,393 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.89 | 125,765 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,222 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 93,909 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,864 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,062 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,095 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,095 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.86 | 93,709 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,689 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 61,377 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,276 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 65,648 |
| The Only Country ... | 0 | - | 4.91 | 80,329 |
| Biggest British Empire Countries | 0 | - | 4.73 | 99,349 |
| Vietnam War Countries | 0 | - | 4.83 | 93,845 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,157 |
| Countries of the German Empire | 0 | - | 4.51 | 37,763 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,650 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,934 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,369 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,094 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,268 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.98 | 100,263 |
| All 50k+ Cities in Europe with a Map | 0 | - | 4.95 | 34,150 |
| British Places A-Z | 0 | - | 4.29 | 79,709 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 64,874 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,627 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,035 |
