| Airport Codes Quiz #1 | 0 | - | 4.81 | 215,943 |
| Busiest Airports in Europe | 0 | - | 4.91 | 146,716 |
| World's Busiest Airports | 0 | - | 4.96 | 235,861 |
| Countries with the Most Airports | 0 | - | 4.96 | 99,754 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,692,607 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,619 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,224 |
| Top World Languages | 0 | - | 4.92 | 826,454 |
| Busiest Airports in the United States | 0 | - | 4.54 | 135,937 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,825 |
| Cities by Airports | 0 | - | 4.47 | 103,435 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 136,380 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 126,256 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 122,479 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,486 |
| Airports Named for People #1 | 0 | - | 4.44 | 56,048 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,746 |
| World Currency Quiz | 0 | - | 4.92 | 305,177 |
| Boundary Waters | 0 | - | 4.92 | 88,647 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,319 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,424 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,480 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,414 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 61,987 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,351 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,770 |
| Places in their Native Language #2 | 0 | - | 4.80 | 134,730 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,951 |
| Landlocked Countries | 0 | - | 4.99 | 423,337 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 56,032 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,793 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,625 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,655 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,801 |
| World Capitals Quiz | 0 | - | 5.00 | 5,091,791 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,147 |
| Himalayan Countries | 0 | - | 4.94 | 139,336 |
| Andean Countries | 0 | - | 4.94 | 84,941 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,162 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,324 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,730 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,042 |
| Danube Countries | 0 | - | 4.97 | 72,162 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,241 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,569 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,603 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,109 |
| European Landlocked Countries | 0 | - | 4.99 | 147,319 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,891 |
| Countries with the Most Species | 0 | - | 4.99 | 103,375 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,026 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,661 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,776 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,642 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,401 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,806 |
| Countries in the Alps | 0 | - | 4.87 | 118,421 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,199 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,903 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,354 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,779 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,758 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,667 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,066 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,857 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,637 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,267 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,988 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,738 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,611 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,349 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,599 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,670 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,251 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,435 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,968 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,288 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,681 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,516 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,466 |
| Countries by Countries | 0 | - | 4.96 | 63,392 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,333 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,830 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,788,409 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,856 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,906 |
| Demonyms Quiz | 0 | - | 4.15 | 185,403 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,552 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,396 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,400 |
| Longest International Borders | 0 | - | 4.99 | 265,441 |
| Countries with Three Borders | 0 | - | 4.96 | 36,672 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,212 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,324 |
| Demonym of Every Country | 0 | - | 4.90 | 61,036 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,805 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,594,073 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,951 |
| Island Countries | 0 | - | 4.99 | 711,561 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,663 |
| Northernmost Countries | 0 | - | 4.99 | 362,673 |
| Countries of South America | 0 | - | 5.00 | 929,296 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,340 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,706 |
| "Land" Countries | 0 | - | 4.98 | 337,730 |
| World's Biggest Airlines | 0 | - | 4.42 | 125,771 |
| Airline Logos | 0 | - | 4.45 | 141,155 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,261 |
| Europe Map Quiz | 0 | - | 5.00 | 4,776,920 |
| All Country Flags of the World | 0 | - | 5.00 | 3,691,781 |
| Foods of the World by Description | 0 | - | 4.18 | 46,083 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,623 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,352 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,451 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,507 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,328 |
| Countries with Megacities | 0 | - | 4.99 | 265,547 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,124 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,691 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,386 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,761 |
| Biggest Cities in the World | 0 | - | 4.92 | 802,750 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,163 |
| Cities by Famous Street | 0 | - | 3.96 | 48,362 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,167 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,852 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,807 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,725 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,919 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,811 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,653 |
| Countries by Capital City | 0 | - | 5.00 | 68,937 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,559 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,980 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,739 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,566 |
| Moved Capital Cities | 0 | - | 4.96 | 74,470 |
| Countries by Official Language | 0 | - | 4.95 | 195,532 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,785 |
| Countries in their Native Language | 0 | - | 4.99 | 199,322 |
| Independence from Whom | 0 | - | 4.99 | 212,424 |
| Subdivisions by Country | 0 | - | 4.87 | 50,504 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,977 |
| Megadiverse Countries | 0 | - | 4.96 | 135,121 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,341 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,433 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,313 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,148 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,317 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,672 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,660 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,440 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,726 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,194 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,984 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,979 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,293 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,032 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,453 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,575 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,657 |
| World Map Quiz | 0 | - | 4.81 | 65,294 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,492 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,377 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,465 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,163 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,708 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,056 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,173 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,428 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,515 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,963 |
| Widest Countries East to West | 0 | - | 4.92 | 129,792 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,487 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,932 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,405 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,868 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,749 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,008 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,426 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,828 |
| Airlines by Country | 0 | - | 4.52 | 135,639 |
| Countries with Double Letters | 0 | - | 4.96 | 96,560 |
| Countries that End in N | 0 | - | 4.95 | 171,463 |
| Countries with Five Letters | 0 | - | 4.96 | 283,028 |
| Countries with Six Letters | 0 | - | 4.94 | 213,900 |
| Countries with W | 0 | - | 4.96 | 160,566 |
| Countries with Z | 0 | - | 4.98 | 291,819 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,930 |
| Countries That End in U | 0 | - | 4.95 | 120,979 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,707 |
| Countries that End in O | 0 | - | 4.92 | 159,632 |
| Countries that End in R | 0 | - | 4.87 | 119,052 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,807 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,383 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,864 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,615 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,520 |
| Countries That End in Y | 0 | - | 4.91 | 185,963 |
