| Countries of the World Quiz | 0 | - | 5.00 | 47,595,266 |
| Countries by National Anthem | 0 | - | 4.93 | 71,294 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,413 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,112 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 136,155 |
| Countries with the Most Airports | 0 | - | 4.96 | 99,404 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 125,941 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 122,012 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,615 |
| World Currency Quiz | 0 | - | 4.92 | 304,224 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,252 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,301 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 61,888 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,200 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,603 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,616 |
| Boundary Waters | 0 | - | 4.92 | 88,579 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,260 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,284 |
| Cities by Airports | 0 | - | 4.49 | 99,059 |
| World Capitals with the Most International Tourists | 0 | - | 4.51 | 53,398 |
| Landlocked Countries | 0 | - | 4.99 | 422,129 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,964 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Twelve Days of Christmas | 0 | - | 4.45 | 146,087 |
| Rudolph the Red-Nosed Reindeer | 0 | - | 4.53 | 76,331 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,710 |
| World Capitals Quiz | 0 | - | 5.00 | 5,084,089 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,139 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,779,940 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,718 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,433 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,444 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,698 |
| Cities with the Most Opera Performances | 0 | - | 4.64 | 41,558 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,874 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,549 |
| Island Countries | 0 | - | 4.99 | 711,106 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,546 |
| Himalayan Countries | 0 | - | 4.94 | 138,811 |
| Andean Countries | 0 | - | 4.93 | 84,654 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,855 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,898 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,480 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,836 |
| Danube Countries | 0 | - | 4.97 | 72,034 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,036 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,441 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,346 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,827 |
| European Landlocked Countries | 0 | - | 4.99 | 147,158 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,678 |
| Countries with the Most Species | 0 | - | 4.99 | 103,259 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,792 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,601 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,729 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,553 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,246 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,681 |
| Countries in the Alps | 0 | - | 4.87 | 118,232 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,207 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,063 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,669 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,610 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,533 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,959 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,691 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,509 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,190 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,864 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,666 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,533 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,240 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,488 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,544 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,946 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,329 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,976 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,113 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,022 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,175 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,249 |
| Largest Countries By Category | 0 | - | 4.97 | 158,241 |
| Countries by Countries | 0 | - | 4.96 | 63,248 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,687 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,082 |
| Northernmost Countries | 0 | - | 4.99 | 362,031 |
| Countries of South America | 0 | - | 5.00 | 927,582 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,265 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,835 |
| "Land" Countries | 0 | - | 4.98 | 337,386 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,726 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,863 |
| Top World Languages | 0 | - | 4.92 | 824,475 |
| Asia's Busiest Airports | 0 | - | 4.69 | 52,895 |
| World's Biggest Airlines | 0 | - | 4.42 | 125,544 |
| Airline Logos | 0 | - | 4.45 | 140,999 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,501 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,035 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,301 |
| Longest International Borders | 0 | - | 4.99 | 265,217 |
| Countries with Three Borders | 0 | - | 4.96 | 36,623 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,134 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,234 |
| Demonym of Every Country | 0 | - | 4.91 | 60,738 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,458 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,934 |
| Countries with Megacities | 0 | - | 4.99 | 264,644 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,770 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,492 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,031 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,565 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,144 |
| Cities by Famous Street | 0 | - | 3.96 | 48,342 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,148 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,556 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,551 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,554 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,690 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,505 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,325 |
| Countries by Capital City | 0 | - | 5.00 | 68,646 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,380 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,822 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,419 |
| Moved Capital Cities | 0 | - | 4.96 | 74,351 |
| Countries by Official Language | 0 | - | 4.95 | 195,282 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,414 |
| Countries in their Native Language | 0 | - | 4.99 | 199,071 |
| Independence from Whom | 0 | - | 4.99 | 212,143 |
| Subdivisions by Country | 0 | - | 4.86 | 50,436 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,756 |
| Megadiverse Countries | 0 | - | 4.96 | 135,025 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,120 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,368 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,245 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,111 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,159 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,604 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,495 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,043 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,669 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,151 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,697 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,894 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,215 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,971 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,361 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,502 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,055 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,228 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,366 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,121 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,294 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,013 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,243 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,910 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,026 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,313 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,448 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,584 |
| Widest Countries East to West | 0 | - | 4.92 | 129,663 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,462 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,395 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,125 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,779 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,609 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,883 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,378 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,800 |
| Airlines by Country | 0 | - | 4.52 | 135,535 |
| Countries with Double Letters | 0 | - | 4.96 | 96,254 |
| Countries that End in N | 0 | - | 4.95 | 171,143 |
| Countries with Five Letters | 0 | - | 4.96 | 282,513 |
| Countries with Six Letters | 0 | - | 4.94 | 213,576 |
| Countries with W | 0 | - | 4.97 | 160,334 |
| Countries with Z | 0 | - | 4.98 | 291,480 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,715 |
| Countries That End in U | 0 | - | 4.95 | 120,860 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,474 |
| Countries that End in O | 0 | - | 4.92 | 159,512 |
| Countries that End in R | 0 | - | 4.87 | 118,972 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,734 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,115 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,704 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,480 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,404 |
| Countries That End in Y | 0 | - | 4.91 | 185,877 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,930 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,862 |
| Countries that End in I | 0 | - | 4.94 | 135,095 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,120 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,826 |
| Countries That End in NIA | 0 | - | 4.92 | 109,790 |
| Countries That End in BIA | 0 | - | 4.93 | 149,215 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,129 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,434 |
| Countries That End in RIA | 0 | - | 4.93 | 126,808 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,026 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,634 |
