| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,709 |
| World Capitals Quiz | 0 | - | 5.00 | 5,071,006 |
| Countries with Glaciers | 0 | - | 4.97 | 105,394 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,527 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,633 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,585,453 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,060 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,183 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,361 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,441 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,166 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,903 |
| Countries by Capital City | 0 | - | 5.00 | 68,189 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,128 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,610 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,141 |
| Moved Capital Cities | 0 | - | 4.96 | 74,163 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,237 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,649 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,868 |
| North American Sports Cities | 0 | - | 4.83 | 172,332 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,306 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,357 |
| Name a City - European Countries | 0 | - | 4.90 | 65,335 |
| Cities by Former Name | 0 | - | 4.83 | 91,538 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,374 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,636 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,129 |
| World Capitals by Map | 0 | - | 5.00 | 286,198 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,262 |
| Capitals Starting With H | 0 | - | 4.91 | 92,505 |
| Capitals Starting With K | 0 | - | 4.88 | 83,369 |
| Capitals Starting With L | 0 | - | 4.81 | 88,027 |
| Capitals Starting With M | 0 | - | 4.93 | 107,715 |
| Capitals Starting With P | 0 | - | 4.88 | 78,150 |
| Capitals Starting With R | 0 | - | 4.87 | 81,786 |
| Capitals Starting With S | 0 | - | 4.90 | 85,736 |
| Capitals Starting With T | 0 | - | 4.85 | 76,130 |
| Capitals Starting With W | 0 | - | 4.87 | 91,273 |
| Capitals Starting With A | 0 | - | 4.97 | 127,837 |
| Capitals Starting With B | 0 | - | 4.89 | 118,415 |
| Capitals Starting With D | 0 | - | 4.93 | 96,380 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,251 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,460 |
| Random Capital to Country | 0 | - | 4.99 | 2,590,431 |
| Random Country to Capital | 0 | - | 4.98 | 919,973 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,239 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,374 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,852 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,136 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,142 |
| Least-Forested Countries | 0 | - | 4.53 | 65,187 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,058 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,618 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,512 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,143 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,545 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,606 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,924 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,934 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,039 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,839 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,773 |
| Former Capitals | 0 | - | 4.88 | 71,436 |
| Europe Capital to Country | 0 | - | 4.99 | 249,963 |
| Asia Capital to Country | 0 | - | 4.96 | 126,622 |
| Capital Cities Chain | 0 | - | 4.83 | 82,696 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,805 |
| European Capitals by Map | 0 | - | 4.99 | 139,030 |
| African Capitals by Map | 0 | - | 4.99 | 133,714 |
| Coldest World Capitals | 0 | - | 4.95 | 133,535 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,310 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,025 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,378 |
| European Coastal Capitals | 0 | - | 4.95 | 90,551 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,567 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,785 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,875 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,810 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,521 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,856 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,636 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,811 |
| Boundary Waters | 0 | - | 4.92 | 88,452 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,137 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,041 |
| Unusual U.S. City Names | 0 | - | 4.51 | 27,796 |
| Northernmost Major Cities | 0 | - | 4.08 | 56,523 |
| Biggest Cities Named for Saints | 0 | - | 4.36 | 95,495 |
| Biggest U.S. Cities with 4 or 5 Letters | 0 | - | 4.36 | 44,692 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,932 |
| Ancient City to Country | 0 | - | 4.70 | 108,004 |
| Official Cities in the UK | 0 | - | 4.89 | 283,555 |
| Most Appealing Cities for Working Abroad | 0 | - | 4.38 | 36,148 |
| City-States | 0 | - | 4.53 | 37,257 |
| Cities by Latitude Longitude Coordinates | 0 | - | 4.45 | 8,570 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,126 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,663 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,744 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,184 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,108 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,536 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,509 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,233 |
| Capitals Based on Last Two Letters | 0 | - | 4.48 | 58,902 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,160 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,596 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,426 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 93,998 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,203 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.91 | 13,052 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,803 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,650 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.87 | 126,348 |
| Top Five Capitals By Category #1 | 0 | - | 4.74 | 80,764 |
| Top Five Capitals By Category #2 | 0 | - | 4.78 | 66,936 |
| Most Expensive Capital Cities | 0 | - | 4.55 | 81,045 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,156 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,142 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,315 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,403 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,365 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.86 | 94,045 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,519 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,174 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,265 |
| The Only Country ... | 0 | - | 4.91 | 80,981 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,152 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,424,899 |
| Word Scramble - Cities #1 | 0 | - | 4.50 | 99,211 |
| Big 4 Sports Championship Cities | 0 | - | 4.43 | 120,142 |
| Cities by Airports | 0 | - | 4.49 | 88,708 |
| Largest World Cities With Five Letters | 0 | - | 4.53 | 66,974 |
| Cities Chain #2 | 0 | - | 4.42 | 56,365 |
| Cities Chain #1 | 0 | - | 4.61 | 66,620 |
| World's Biggest Financial Centers | 0 | - | 4.55 | 72,047 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 70,114 |
| Most-Searched Cities on Wikipedia | 0 | - | 4.41 | 35,196 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 147,513 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,762 |
| Name Any Valid U.S. City | 0 | - | 4.49 | 40,568 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,146 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,744 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,067 |
| Nearest Capital City #2 | 0 | - | 4.57 | 39,141 |
| World Capitals with the Most International Tourists | 0 | - | 4.51 | 53,339 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 132,969 |
| Random World Capitals on a Map | 0 | - | 4.93 | 134,532 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,319 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,299 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,131 |
| Capitals Starting With N | 0 | - | 4.80 | 51,154 |
| Capitals Starting With V | 0 | - | 4.79 | 38,151 |
| Capitals Starting With C | 0 | - | 4.79 | 97,850 |
| Landlocked Countries | 0 | - | 4.99 | 420,023 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,439 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,267 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,573 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,777 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,892 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,095 |
| Cities with the Same Name | 0 | - | 3.94 | 36,680 |
| U.S. Cities with the Highest Elevation | 0 | - | 4.26 | 27,806 |
| Musical Acts by City #1 | 0 | - | 4.05 | 31,394 |
| Musical Acts by City #2 | 0 | - | 4.02 | 10,982 |
| Nearest Major City #1 | 0 | - | 4.49 | 23,619 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,559 |
| Closest City Pairs #2 | 0 | - | 4.54 | 29,433 |
| Closest City Pairs #1 | 0 | - | 4.46 | 24,775 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,099 |
| Cities by Initials | 0 | - | 4.12 | 24,564 |
| City to Country - Tile Select #2 | 0 | - | 4.54 | 20,904 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,329 |
| National Subdivisions by Capital | 0 | - | 4.36 | 99,473 |
| Capital Cities with the Same Name as Their Country | 0 | - | 4.31 | 75,201 |
| Capitals by First and Last Letter | 0 | - | 4.39 | 66,584 |
| World Capitals Ending with O | 0 | - | 4.80 | 17,753 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,420 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,499 |
| Capital Closest to the Equator | 0 | - | 4.58 | 15,422 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,633 |
| Double Trouble Capital Cities | 0 | - | 4.53 | 22,723 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 75,466 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,075 |
| Random European Capital to Country | 0 | - | 4.98 | 190,817 |
| Random European Country to Capital | 0 | - | 4.93 | 165,040 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,389 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,719 |
| Random African Capital to Country | 0 | - | 4.97 | 100,674 |
| Random African Country to Capital | 0 | - | 4.94 | 71,177 |
| Melbourne Suburbs | 0 | - | 4.86 | 53,074 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,482 |
| Himalayan Countries | 0 | - | 4.95 | 137,901 |
| Andean Countries | 0 | - | 4.95 | 84,164 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,377 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,955 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,033 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,483 |
| Danube Countries | 0 | - | 4.97 | 71,772 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,714 |
