| Which City in Europe? | 0 | - | 4.83 | 107,450 |
| Which City in Canada? | 0 | - | 4.83 | 57,100 |
| World Capitals by a Single Clue #2 | 0 | - | 4.46 | 53,997 |
| World Capitals by a Single Clue #4 | 0 | - | 4.41 | 45,332 |
| World Capitals by a Single Clue #1 | 0 | - | 4.52 | 56,248 |
| European Cities by Clue | 0 | - | 4.70 | 89,066 |
| Random Capital to Country | 0 | - | 4.99 | 2,592,493 |
| Random Country to Capital | 0 | - | 4.98 | 921,235 |
| Which City in Africa? | 0 | - | 4.77 | 57,853 |
| Which City in Asia? | 0 | - | 4.52 | 51,403 |
| Which City in Latin America? | 0 | - | 4.63 | 47,039 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,334 |
| Capital Cities Chain | 0 | - | 4.84 | 82,804 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,968 |
| World Capitals by a Single Clue #3 | 0 | - | 4.35 | 46,243 |
| Asian Cities by Clue | 0 | - | 4.70 | 25,792 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,855 |
| World Capitals Quiz | 0 | - | 5.00 | 5,077,275 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,699 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,376 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,173 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,220 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,142 |
| Random World Capitals on a Map | 0 | - | 4.93 | 134,700 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,588 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,406 |
| Cities by Wikipedia Descriptions #1 | 0 | - | 4.52 | 55,457 |
| Cities by Wikipedia Descriptions #3 | 0 | - | 4.58 | 47,770 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,355 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,087 |
| Name a Valid African Country | 0 | - | 4.98 | 154,171 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,813 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,725 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,587,863 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,707 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 75,547 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,230 |
| Random European Capital to Country | 0 | - | 4.98 | 191,011 |
| Random European Country to Capital | 0 | - | 4.93 | 165,217 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,507 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,808 |
| Random African Capital to Country | 0 | - | 4.97 | 100,773 |
| Random African Country to Capital | 0 | - | 4.94 | 71,294 |
| Which City in the United States? | 0 | - | 4.21 | 57,016 |
| Which City in the Middle East? | 0 | - | 4.47 | 67,145 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,155 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,579 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,543 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,623 |
| Countries with Megacities | 0 | - | 4.99 | 263,862 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,473 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,327 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,748 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,376 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,251 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,339 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,463 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,561 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,313 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,111 |
| Countries by Capital City | 0 | - | 5.00 | 68,401 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,228 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,705 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,657 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,272 |
| Moved Capital Cities | 0 | - | 4.96 | 74,253 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,458 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,575 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,899 |
| Resort Towns by Country | 0 | - | 4.30 | 40,026 |
| Africa Capitals Quiz | 0 | - | 4.99 | 738,337 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,584 |
| Countries of Africa | 0 | - | 5.00 | 2,539,664 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,944 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,779 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,955 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,986 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,448 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,601 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,124 |
| North American Sports Cities | 0 | - | 4.83 | 172,466 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,347 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,442 |
| Name a City - European Countries | 0 | - | 4.90 | 65,448 |
| Cities by Former Name | 0 | - | 4.83 | 91,611 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,423 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,686 |
| Solve the Secret Capital City | 0 | - | 4.80 | 163,653 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,277 |
| Add A Letter - Make a Capital City | 0 | - | 4.46 | 32,436 |
| World Capitals by Map | 0 | - | 5.00 | 286,738 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,362 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,835 |
| Capitals Starting With H | 0 | - | 4.91 | 92,624 |
| Capitals Starting With K | 0 | - | 4.88 | 83,637 |
| Capitals Starting With L | 0 | - | 4.81 | 88,155 |
| Capitals Starting With M | 0 | - | 4.93 | 107,903 |
| Capitals Starting With P | 0 | - | 4.88 | 78,259 |
| Capitals Starting With R | 0 | - | 4.87 | 81,897 |
| Capitals Starting With S | 0 | - | 4.90 | 85,853 |
| Capitals Starting With T | 0 | - | 4.85 | 76,216 |
| Capitals Starting With W | 0 | - | 4.87 | 91,341 |
| Capitals Starting With A | 0 | - | 4.97 | 128,154 |
| Capitals Starting With B | 0 | - | 4.89 | 118,583 |
| Capitals Starting With D | 0 | - | 4.93 | 96,517 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,204 |
| Olympic Host Countries | 0 | - | 4.98 | 200,880 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,909 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,382 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 309,832 |
| The Only European Country ... | 0 | - | 4.91 | 216,890 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,435 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,286 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,681 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,087 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,494 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,009 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,705 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,641 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,525 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,965 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,219 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,379 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,064 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,365 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,230 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,804 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,284 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,578 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,299 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,579 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,779 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,049 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,196 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,178 |
| Random European City to Country | 0 | - | 4.69 | 117,736 |
| Random Asian City to Country | 0 | - | 4.56 | 44,548 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,968 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,850 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,269 |
| Former Capitals | 0 | - | 4.88 | 71,482 |
| Europe Capital to Country | 0 | - | 4.99 | 250,499 |
| Asia Capital to Country | 0 | - | 4.96 | 126,728 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,987 |
| European Capitals by Map | 0 | - | 4.99 | 139,433 |
| African Capitals by Map | 0 | - | 4.99 | 133,914 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,778 |
| Coldest World Capitals | 0 | - | 4.95 | 133,585 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,491 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,143 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,484 |
| European Coastal Capitals | 0 | - | 4.95 | 90,664 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,613 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,242 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,194 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,866 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,626 |
| Word Scramble - National Capitals | 0 | - | 4.19 | 488,396 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,917 |
| Countries of the Middle East | 0 | - | 4.96 | 201,302 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,377 |
| Slavic Countries | 0 | - | 4.96 | 111,732 |
| Countries by Emojis | 0 | - | 4.99 | 239,940 |
| African Island Countries | 0 | - | 4.96 | 101,708 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,994 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,909 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,363 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.81 | 47,138 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,037 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,202 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,990 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,569 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,626 |
| Countries that Start with A | 0 | - | 4.98 | 2,163,985 |
| Countries that Start with B | 0 | - | 4.95 | 2,295,664 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,093 |
| Countries that Start with D | 0 | - | 4.96 | 710,356 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,019 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,219 |
| Countries that Start with H | 0 | - | 4.96 | 605,300 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,966 |
| Countries that Start with J | 0 | - | 4.98 | 602,958 |
| Countries that Start with K | 0 | - | 4.97 | 816,363 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,373 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,383 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,791 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,718 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,361 |
| Countries that Start with U | 0 | - | 4.97 | 904,936 |
| Countries that Start with V | 0 | - | 4.98 | 609,635 |
| Countries that Start with F | 0 | - | 4.83 | 618,035 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,411 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,210 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,104 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,743 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,822 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,645 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,279 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,268 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,643 |
