| Airport Codes Quiz #1 | 0 | - | 4.82 | 212,996 |
| Busiest Airports in Europe | 0 | - | 4.91 | 144,862 |
| World's Busiest Airports | 0 | - | 4.94 | 210,272 |
| Countries with the Most Airports | 0 | - | 4.96 | 97,067 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,890,116 |
| Airport Codes Quiz #2 | 0 | - | 4.41 | 96,143 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,520 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,543 |
| Top World Languages | 0 | - | 4.92 | 812,655 |
| Busiest Airports in the United States | 0 | - | 4.54 | 134,755 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,363 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,939 |
| Cities by Airports | 0 | - | 4.49 | 87,771 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 134,211 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 123,783 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 118,876 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 37,942 |
| Airports Named for People #1 | 0 | - | 4.46 | 55,680 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 71,557 |
| World Currency Quiz | 0 | - | 4.92 | 298,188 |
| Boundary Waters | 0 | - | 4.92 | 88,025 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,795 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,235 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 219,976 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,769 |
| Largest Countries with Little Tourism | 0 | - | 4.74 | 61,230 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,575 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,408 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,775 |
| Landlocked Countries | 0 | - | 4.99 | 413,272 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,682 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,134 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,544 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,897 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,110 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,076 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,426 |
| Himalayan Countries | 0 | - | 4.95 | 135,209 |
| Andean Countries | 0 | - | 4.94 | 82,755 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,166 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,106 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,831 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,542 |
| Danube Countries | 0 | - | 4.97 | 71,044 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,707 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,498 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,392 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,317 |
| European Landlocked Countries | 0 | - | 4.99 | 145,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,140 |
| Countries with the Most Species | 0 | - | 4.99 | 95,222 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,285 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,191 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,355 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,938 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,548 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,918 |
| Countries in the Alps | 0 | - | 4.87 | 116,764 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 81,799 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,524 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,181 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,982 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,387 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,111 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,966 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,527 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,725 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,057 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,018 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,182 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,021 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,414 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,712 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,719 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,991 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,608 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,235 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,731 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,070 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,524 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,573 |
| Largest Countries By Category | 0 | - | 4.97 | 156,691 |
| Countries by Countries | 0 | - | 4.96 | 62,223 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,721 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,470 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,673 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,473 |
| Demonyms Quiz | 0 | - | 4.15 | 184,816 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,223 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,308 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,591 |
| Longest International Borders | 0 | - | 4.99 | 263,482 |
| Countries with Three Borders | 0 | - | 4.96 | 36,162 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,585 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,640 |
| Demonym of Every Country | 0 | - | 4.91 | 58,614 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,454 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,216 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,003 |
| Island Countries | 0 | - | 4.99 | 707,466 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,009 |
| Northernmost Countries | 0 | - | 4.99 | 357,530 |
| Countries of South America | 0 | - | 5.00 | 914,100 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,646 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,980 |
| "Land" Countries | 0 | - | 4.98 | 333,545 |
| World's Biggest Airlines | 0 | - | 4.44 | 123,803 |
| Airline Logos | 0 | - | 4.45 | 139,901 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,334 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,701 |
| All Country Flags of the World | 0 | - | 5.00 | 3,598,693 |
| Foods of the World by Description | 0 | - | 4.18 | 45,931 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,152 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,205 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,413 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,451 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,987 |
| Countries with Megacities | 0 | - | 4.99 | 246,499 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,908 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,791 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,363 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,752 |
| Biggest Cities in the World | 0 | - | 4.92 | 789,908 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,023 |
| Cities by Famous Street | 0 | - | 3.96 | 48,243 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,062 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,685 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,882 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,612 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,564 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,548 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,337 |
| Countries by Capital City | 0 | - | 5.00 | 66,560 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,282 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,866 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,214 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,386 |
| Moved Capital Cities | 0 | - | 4.96 | 73,552 |
| Countries by Official Language | 0 | - | 4.95 | 192,697 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,021 |
| Countries in their Native Language | 0 | - | 4.99 | 196,555 |
| Independence from Whom | 0 | - | 4.99 | 209,590 |
| Subdivisions by Country | 0 | - | 4.86 | 50,049 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,675 |
| Megadiverse Countries | 0 | - | 4.97 | 133,864 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,731 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,903 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,404 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,600 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,829 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,115 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,200 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,731 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,494 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,395 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,470 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,484 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,645 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,003 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,470 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,283 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,268 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,936 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,902 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,630 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,821 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,026 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,234 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,919 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,301 |
| Widest Countries East to West | 0 | - | 4.92 | 128,569 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,209 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,162 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,546 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,666 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,587 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,002 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,045 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,565 |
| Airlines by Country | 0 | - | 4.52 | 134,749 |
| Countries with Double Letters | 0 | - | 4.97 | 93,305 |
| Countries that End in N | 0 | - | 4.94 | 156,366 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,596 |
| Countries with Six Letters | 0 | - | 4.93 | 210,280 |
| Countries with W | 0 | - | 4.97 | 158,174 |
| Countries with Z | 0 | - | 4.98 | 287,781 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,496 |
| Countries That End in U | 0 | - | 4.95 | 119,488 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,467 |
| Countries that End in O | 0 | - | 4.92 | 158,520 |
| Countries that End in R | 0 | - | 4.87 | 118,244 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,842 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,946 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,266 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,451 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,904 |
| Countries That End in Y | 0 | - | 4.90 | 185,181 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,293 |
