| Which City in Europe? | 0 | - | 4.83 | 107,975 |
| Which City in Canada? | 0 | - | 4.83 | 57,397 |
| World Capitals by a Single Clue #2 | 0 | - | 4.46 | 54,139 |
| World Capitals by a Single Clue #4 | 0 | - | 4.42 | 45,660 |
| World Capitals by a Single Clue #1 | 0 | - | 4.52 | 56,396 |
| European Cities by Clue | 0 | - | 4.70 | 89,208 |
| Random Capital to Country | 0 | - | 4.99 | 2,603,600 |
| Random Country to Capital | 0 | - | 4.98 | 929,624 |
| Which City in Africa? | 0 | - | 4.77 | 58,029 |
| Which City in Asia? | 0 | - | 4.52 | 51,614 |
| Which City in Latin America? | 0 | - | 4.63 | 47,170 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,821 |
| Capital Cities Chain | 0 | - | 4.84 | 83,491 |
| Solve the Secret Capital City | 0 | - | 4.81 | 164,681 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,690 |
| World Capitals by a Single Clue #3 | 0 | - | 4.35 | 46,372 |
| Asian Cities by Clue | 0 | - | 4.70 | 25,852 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,453 |
| World Capitals Quiz | 0 | - | 5.00 | 5,112,151 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 228,075 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,234 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,750 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,761 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 134,434 |
| Random World Capitals on a Map | 0 | - | 4.93 | 135,984 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 81,497 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,979 |
| Cities by Wikipedia Descriptions #1 | 0 | - | 4.52 | 55,627 |
| Cities by Wikipedia Descriptions #3 | 0 | - | 4.58 | 47,905 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,196 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,913 |
| Name a Valid African Country | 0 | - | 4.98 | 155,194 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,063 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,368 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,601,684 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,153 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 76,153 |
| Name a World Capital A-Z | 0 | - | 5.00 | 177,224 |
| Random European Capital to Country | 0 | - | 4.98 | 192,308 |
| Random European Country to Capital | 0 | - | 4.93 | 166,027 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,074 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,539 |
| Random African Capital to Country | 0 | - | 4.97 | 101,442 |
| Random African Country to Capital | 0 | - | 4.94 | 71,853 |
| Which City in the United States? | 0 | - | 4.21 | 57,211 |
| Which City in the Middle East? | 0 | - | 4.47 | 67,334 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,216 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,665 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,873 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,437 |
| Countries with Megacities | 0 | - | 4.99 | 267,706 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,086 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,295 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,425 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,405 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,469 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,515 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,063 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,311 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,398 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,331 |
| Countries by Capital City | 0 | - | 5.00 | 69,567 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,100 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,327 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,294 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,928 |
| Moved Capital Cities | 0 | - | 4.96 | 74,714 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,718 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,838 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,716 |
| Resort Towns by Country | 0 | - | 4.30 | 40,096 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,857 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,723 |
| Countries of Africa | 0 | - | 5.00 | 2,563,505 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,546 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,437 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,471 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,788 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,977 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,336 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,699 |
| North American Sports Cities | 0 | - | 4.82 | 173,265 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,595 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 103,027 |
| Name a City - European Countries | 0 | - | 4.89 | 66,343 |
| Cities by Former Name | 0 | - | 4.83 | 92,164 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,970 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,031 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,944 |
| Add A Letter - Make a Capital City | 0 | - | 4.46 | 32,499 |
| World Capitals by Map | 0 | - | 5.00 | 289,818 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,905 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 22,318 |
| Capitals Starting With H | 0 | - | 4.91 | 93,418 |
| Capitals Starting With K | 0 | - | 4.88 | 84,486 |
| Capitals Starting With L | 0 | - | 4.81 | 96,050 |
| Capitals Starting With M | 0 | - | 4.94 | 109,325 |
| Capitals Starting With P | 0 | - | 4.88 | 79,101 |
| Capitals Starting With R | 0 | - | 4.88 | 82,587 |
| Capitals Starting With S | 0 | - | 4.90 | 86,672 |
| Capitals Starting With T | 0 | - | 4.86 | 76,924 |
| Capitals Starting With W | 0 | - | 4.87 | 91,780 |
| Capitals Starting With A | 0 | - | 4.97 | 129,242 |
| Capitals Starting With B | 0 | - | 4.89 | 119,616 |
| Capitals Starting With D | 0 | - | 4.94 | 97,295 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,127 |
| Olympic Host Countries | 0 | - | 4.98 | 202,165 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,203 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,415 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 314,770 |
| The Only European Country ... | 0 | - | 4.91 | 219,449 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,239 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,770 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,970 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,863 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,757 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,524 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,566 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,956 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,523 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,812 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,861 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,016 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,977 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,989 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,599 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,268 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,563 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,913 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,849 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,819 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,637 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 47,038 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,717 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,286 |
| Random European City to Country | 0 | - | 4.69 | 118,525 |
| Random Asian City to Country | 0 | - | 4.56 | 44,629 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,780 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,670 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,951 |
| Former Capitals | 0 | - | 4.88 | 71,719 |
| Europe Capital to Country | 0 | - | 4.99 | 252,484 |
| Asia Capital to Country | 0 | - | 4.96 | 127,662 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,218 |
| European Capitals by Map | 0 | - | 4.99 | 142,437 |
| African Capitals by Map | 0 | - | 4.99 | 142,512 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,493 |
| Coldest World Capitals | 0 | - | 4.95 | 134,245 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,096 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,084 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,339 |
| European Coastal Capitals | 0 | - | 4.95 | 91,459 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,256 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,182 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,124 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,229 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,231 |
| Word Scramble - National Capitals | 0 | - | 4.19 | 492,274 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,154 |
| Countries of the Middle East | 0 | - | 4.96 | 203,191 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,330 |
| Slavic Countries | 0 | - | 4.96 | 112,477 |
| Countries by Emojis | 0 | - | 4.99 | 242,760 |
| African Island Countries | 0 | - | 4.96 | 102,697 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,684 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,226 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,682 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 53,493 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,780 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,085 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,969 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,442 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,898 |
| Countries that Start with A | 0 | - | 4.98 | 2,177,803 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,430 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,998 |
| Countries that Start with D | 0 | - | 4.96 | 717,489 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,286 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,829 |
| Countries that Start with H | 0 | - | 4.96 | 610,309 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,524 |
| Countries that Start with J | 0 | - | 4.98 | 607,701 |
| Countries that Start with K | 0 | - | 4.97 | 821,527 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,802 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,851 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,017 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,474 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,654 |
| Countries that Start with U | 0 | - | 4.97 | 909,043 |
| Countries that Start with V | 0 | - | 4.98 | 612,426 |
| Countries that Start with F | 0 | - | 4.83 | 621,853 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,312 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 145,323 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,081 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,729 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,683 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,062 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,957 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,490 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,025 |
