| Busiest Airports in Europe | 0 | - | 4.91 | 146,152 |
| World's Busiest Airports | 0 | - | 4.96 | 233,168 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,403,752 |
| Countries with the Most Airports | 0 | - | 4.96 | 98,730 |
| Airport Codes Quiz #1 | 0 | - | 4.81 | 214,885 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,309 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,840 |
| Top World Languages | 0 | - | 4.92 | 821,325 |
| Busiest Airports in the United States | 0 | - | 4.54 | 135,511 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,784 |
| Cities by Airports | 0 | - | 4.49 | 88,698 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 135,740 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 125,336 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 121,122 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,334 |
| Airports Named for People #1 | 0 | - | 4.44 | 55,900 |
| Airport Codes Quiz #2 | 0 | - | 4.39 | 97,001 |
| Boundary Waters | 0 | - | 4.92 | 88,433 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,127 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,014 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,329 |
| World Currency Quiz | 0 | - | 4.92 | 302,621 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,917 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,919 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,116 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 61,723 |
| Places in their Native Language #2 | 0 | - | 4.80 | 134,172 |
| Landlocked Countries | 0 | - | 4.99 | 419,800 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,044 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,282 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,550 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,839 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,057 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,549 |
| World Capitals Quiz | 0 | - | 5.00 | 5,069,260 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,362 |
| Himalayan Countries | 0 | - | 4.95 | 137,792 |
| Andean Countries | 0 | - | 4.95 | 84,114 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,343 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,891 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,980 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,454 |
| Danube Countries | 0 | - | 4.97 | 71,750 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,676 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,150 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,823 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,894 |
| European Landlocked Countries | 0 | - | 4.99 | 146,873 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,257 |
| Countries with the Most Species | 0 | - | 4.99 | 103,015 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,416 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,460 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,628 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,378 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,051 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,449 |
| Countries in the Alps | 0 | - | 4.87 | 117,835 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,057 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,231 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,561 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,475 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,353 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,219 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,783 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,384 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,269 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,028 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,632 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,528 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,377 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,996 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,269 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,289 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,383 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,124 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,631 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,679 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,792 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,470 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,051 |
| Largest Countries By Category | 0 | - | 4.97 | 157,799 |
| Countries by Countries | 0 | - | 4.97 | 62,937 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,184 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,423 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,675 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,897 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,487 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,774 |
| Demonyms Quiz | 0 | - | 4.15 | 185,118 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,421 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,369 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,136 |
| Longest International Borders | 0 | - | 4.99 | 264,829 |
| Countries with Three Borders | 0 | - | 4.96 | 36,498 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,967 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,089 |
| Demonym of Every Country | 0 | - | 4.91 | 59,248 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,302 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,751 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,584,904 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,851 |
| Island Countries | 0 | - | 4.99 | 710,132 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,043 |
| Northernmost Countries | 0 | - | 4.99 | 360,907 |
| Countries of South America | 0 | - | 5.00 | 924,151 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,851 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,587 |
| "Land" Countries | 0 | - | 4.98 | 336,019 |
| World's Biggest Airlines | 0 | - | 4.42 | 125,045 |
| Airline Logos | 0 | - | 4.45 | 140,650 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,368 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,283 |
| Countries with Megacities | 0 | - | 4.99 | 262,557 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,115 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,129 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,416 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,179 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,104 |
| Cities by Famous Street | 0 | - | 3.96 | 48,315 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,120 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,012 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,135 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,332 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,409 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,129 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,869 |
| Countries by Capital City | 0 | - | 5.00 | 68,131 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,100 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,580 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,097 |
| Moved Capital Cities | 0 | - | 4.96 | 74,138 |
| Countries by Official Language | 0 | - | 4.95 | 194,813 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,766 |
| Countries in their Native Language | 0 | - | 4.99 | 198,356 |
| Independence from Whom | 0 | - | 4.99 | 211,550 |
| Subdivisions by Country | 0 | - | 4.86 | 50,329 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,867 |
| Megadiverse Countries | 0 | - | 4.96 | 134,830 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,685 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,794 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,039 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,822 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,440 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,107 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,898 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,533 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,022 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,196 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,766 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,044 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,832 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,211 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,380 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,850 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,459 |
| World Map Quiz | 0 | - | 4.81 | 64,744 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,130 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,672 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,026 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,761 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,608 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,627 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,772 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,908 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,322 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,363 |
| Widest Countries East to West | 0 | - | 4.92 | 129,445 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,072 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,034 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,587 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,327 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,645 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,282 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,745 |
| Countries with Double Letters | 0 | - | 4.97 | 95,272 |
| Countries that End in N | 0 | - | 4.95 | 170,279 |
| Countries with Five Letters | 0 | - | 4.96 | 281,034 |
| Countries with Six Letters | 0 | - | 4.94 | 212,712 |
| Countries with W | 0 | - | 4.97 | 159,645 |
| Countries with Z | 0 | - | 4.98 | 290,495 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,893 |
| Countries That End in U | 0 | - | 4.95 | 120,478 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,903 |
| Countries that End in O | 0 | - | 4.92 | 159,256 |
| Countries that End in R | 0 | - | 4.87 | 118,777 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,550 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,504 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,265 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,167 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,781 |
| Countries That End in Y | 0 | - | 4.91 | 185,688 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,434 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,529 |
| Countries that End in I | 0 | - | 4.94 | 134,916 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,629 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,631 |
| Countries That End in NIA | 0 | - | 4.92 | 109,577 |
| Countries That End in BIA | 0 | - | 4.93 | 148,924 |
