| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,841,615 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,847 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,533 |
| Longest Border by Country #1 | 0 | - | 4.99 | 146,585 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,004 |
| Countries with Two Borders | 0 | - | 4.99 | 150,232 |
| Countries by Borders #2 | 0 | - | 4.96 | 136,656 |
| Landlocked Countries that Border Each Other | 0 | - | 5.00 | 141,349 |
| Big Countries Bordering Small Countries | 0 | - | 4.99 | 131,578 |
| Largest Countries Bordering Each Other | 0 | - | 4.99 | 115,671 |
| Biggest Countries Bordering the Pacific Ocean | 0 | - | 4.92 | 93,805 |
| Countries by Borders #3 | 0 | - | 4.98 | 98,278 |
| Bordering Countries Forming Words #1 | 0 | - | 4.92 | 75,827 |
| Bordering Countries Forming Words #2 | 0 | - | 4.97 | 32,817 |
| Longest Border by Country #2 | 0 | - | 4.95 | 121,363 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,808 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,809 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,016 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,403 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,540 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,680 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 104,231 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 139,954 |
| Bordering Countries by HDI Difference | 0 | - | 4.89 | 52,068 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,566 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,467 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,526 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,666 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,725,741 |
| Landlocked Countries | 0 | - | 4.99 | 423,756 |
| Smallest Countries Bordering Each Other | 0 | - | 4.61 | 93,022 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,542 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,315 |
| Himalayan Countries | 0 | - | 4.94 | 139,491 |
| Andean Countries | 0 | - | 4.94 | 85,037 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,427 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,791 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,102 |
| Danube Countries | 0 | - | 4.97 | 72,205 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,294 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,617 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,699 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,197 |
| European Landlocked Countries | 0 | - | 4.99 | 147,364 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,967 |
| Countries with the Most Species | 0 | - | 4.99 | 103,411 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,104 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,679 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,790 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,681 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,432 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,844 |
| Countries in the Alps | 0 | - | 4.87 | 118,477 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,048 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,429 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,806 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,805 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,732 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,094 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,909 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,664 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,015 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,759 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,625 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,383 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,633 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,717 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,358 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,472 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,196 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,347 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,874 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,641 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,374 |
| Largest Countries By Category | 0 | - | 4.97 | 158,532 |
| Countries by Countries | 0 | - | 4.96 | 63,433 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,997 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,345 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,896 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,162 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,080 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,484 |
| Island Countries | 0 | - | 4.99 | 711,733 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,321 |
| Northernmost Countries | 0 | - | 4.99 | 363,010 |
| Countries of South America | 0 | - | 5.00 | 929,883 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,115 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,016 |
| "Land" Countries | 0 | - | 4.98 | 337,856 |
| Which Country Does Not Border... | 0 | - | 4.78 | 93,824 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,287 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 83,238 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 87,567 |
| Walking Across Borders with Hints #1 | 0 | - | 4.94 | 109,185 |
| Countries Bordering Two or More Oceans | 0 | - | 4.22 | 123,234 |
| Borders of One Border Countries | 0 | - | 4.14 | 86,376 |
| Random Countries by Borders | 0 | - | 4.99 | 82,843 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,424 |
| Countries with Megacities | 0 | - | 4.99 | 265,818 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,217 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,748 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,481 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,833 |
| Countries by Official Language | 0 | - | 4.95 | 195,623 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,000 |
| Countries in their Native Language | 0 | - | 4.99 | 199,392 |
| Independence from Whom | 0 | - | 4.99 | 212,539 |
| Subdivisions by Country | 0 | - | 4.87 | 50,524 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,062 |
| Megadiverse Countries | 0 | - | 4.96 | 135,153 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,429 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,454 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,338 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,160 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,368 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,696 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,729 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,744 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,206 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,081 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,150 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,322 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,056 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,470 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,596 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,792 |
| World Map Quiz | 0 | - | 4.81 | 65,373 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,628 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,653 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,312 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,933 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,181 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,301 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,517 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,577 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,461 |
| Widest Countries East to West | 0 | - | 4.92 | 130,157 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,524 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,009 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,438 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,800 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,073 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,446 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,850 |
| Countries with Double Letters | 0 | - | 4.96 | 96,657 |
| Countries that End in N | 0 | - | 4.95 | 171,549 |
| Countries with Five Letters | 0 | - | 4.96 | 283,177 |
| Countries with Six Letters | 0 | - | 4.94 | 214,001 |
| Countries with W | 0 | - | 4.96 | 160,628 |
| Countries with Z | 0 | - | 4.98 | 291,939 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,994 |
| Countries That End in U | 0 | - | 4.95 | 121,012 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,781 |
| Countries that End in O | 0 | - | 4.92 | 159,666 |
| Countries that End in R | 0 | - | 4.87 | 119,066 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,829 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,456 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,930 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,646 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,567 |
| Countries That End in Y | 0 | - | 4.91 | 185,993 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,184 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,068 |
| Countries that End in I | 0 | - | 4.94 | 135,211 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,364 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,929 |
| Countries That End in NIA | 0 | - | 4.92 | 109,916 |
| Countries That End in BIA | 0 | - | 4.93 | 149,395 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,329 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,607 |
| Countries That End in RIA | 0 | - | 4.93 | 126,936 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,211 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,078 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,945 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,387 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,922 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,686 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,181 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,489 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,711 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,543 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,195 |
| Countries that End in L | 0 | - | 4.94 | 156,989 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,677 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,304 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,149 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,079 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,126 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,095 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,909 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,294 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,047 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,716 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,043 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,171 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,757 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,115 |
