| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,820,614 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,247 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,157 |
| Longest Border by Country #1 | 0 | - | 4.99 | 145,849 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,055 |
| Countries with Two Borders | 0 | - | 4.99 | 149,606 |
| Countries by Borders #2 | 0 | - | 4.96 | 136,174 |
| Landlocked Countries that Border Each Other | 0 | - | 5.00 | 140,844 |
| Big Countries Bordering Small Countries | 0 | - | 4.99 | 130,717 |
| Largest Countries Bordering Each Other | 0 | - | 4.99 | 115,163 |
| Biggest Countries Bordering the Pacific Ocean | 0 | - | 4.91 | 93,489 |
| Countries by Borders #3 | 0 | - | 4.98 | 97,940 |
| Bordering Countries Forming Words #1 | 0 | - | 4.92 | 75,706 |
| Bordering Countries Forming Words #2 | 0 | - | 4.97 | 32,705 |
| Longest Border by Country #2 | 0 | - | 4.95 | 120,959 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,742 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,472 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,142 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,637 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,925 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,112 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 103,657 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 139,428 |
| Bordering Countries by HDI Difference | 0 | - | 4.90 | 51,841 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,882 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,796 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,971 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,280 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,296,324 |
| Landlocked Countries | 0 | - | 4.99 | 418,335 |
| Smallest Countries Bordering Each Other | 0 | - | 4.63 | 92,637 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,753,455 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,679 |
| Himalayan Countries | 0 | - | 4.94 | 137,156 |
| Andean Countries | 0 | - | 4.95 | 83,788 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,040 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,429 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,718 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,263 |
| Danube Countries | 0 | - | 4.97 | 71,590 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,461 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,994 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,538 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,597 |
| European Landlocked Countries | 0 | - | 4.99 | 146,701 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,037 |
| Countries with the Most Species | 0 | - | 4.99 | 102,834 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,175 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,407 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,563 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,264 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,938 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,315 |
| Countries in the Alps | 0 | - | 4.87 | 117,598 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,076 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,267 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,373 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,922 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,028 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,403 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,209 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,138 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,933 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,501 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,447 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,305 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,882 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,152 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,168 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,060 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,020 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,541 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,438 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,085 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,089 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,951 |
| Largest Countries By Category | 0 | - | 4.97 | 157,545 |
| Countries by Countries | 0 | - | 4.96 | 62,785 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,131 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,145 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,269 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,465 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,448 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,811 |
| Island Countries | 0 | - | 4.99 | 709,526 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,466 |
| Northernmost Countries | 0 | - | 4.99 | 360,221 |
| Countries of South America | 0 | - | 5.00 | 922,202 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,096 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,789 |
| "Land" Countries | 0 | - | 4.98 | 335,671 |
| Which Country Does Not Border... | 0 | - | 4.78 | 93,405 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,514 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 82,963 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 87,214 |
| Walking Across Borders with Hints #1 | 0 | - | 4.95 | 108,754 |
| Countries Bordering Two or More Oceans | 0 | - | 4.22 | 122,609 |
| Borders of One Border Countries | 0 | - | 4.14 | 86,140 |
| Random Countries by Borders | 0 | - | 4.99 | 82,240 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,825 |
| Countries with Megacities | 0 | - | 4.99 | 253,161 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,680 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,879 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,982 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,865 |
| Countries by Official Language | 0 | - | 4.95 | 194,541 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,390 |
| Countries in their Native Language | 0 | - | 4.99 | 198,091 |
| Independence from Whom | 0 | - | 4.99 | 211,205 |
| Subdivisions by Country | 0 | - | 4.86 | 50,265 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,613 |
| Megadiverse Countries | 0 | - | 4.96 | 134,732 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,293 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,156 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,722 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,000 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,653 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,339 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,890 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,460 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,964 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,836 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,678 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,949 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,750 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,106 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,299 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,046 |
| World Map Quiz | 0 | - | 4.81 | 64,424 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,399 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,874 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,583 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,194 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,464 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,638 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,784 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,233 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,236 |
| Widest Countries East to West | 0 | - | 4.92 | 129,320 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,372 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,897 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,978 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,476 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,161 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,495 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,218 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,715 |
| Countries with Double Letters | 0 | - | 4.97 | 95,003 |
| Countries that End in N | 0 | - | 4.95 | 169,774 |
| Countries with Five Letters | 0 | - | 4.96 | 279,479 |
| Countries with Six Letters | 0 | - | 4.94 | 212,365 |
| Countries with W | 0 | - | 4.97 | 159,453 |
| Countries with Z | 0 | - | 4.98 | 289,697 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,657 |
| Countries That End in U | 0 | - | 4.95 | 120,376 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,677 |
| Countries that End in O | 0 | - | 4.92 | 159,164 |
| Countries that End in R | 0 | - | 4.87 | 118,708 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,483 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,225 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,054 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,048 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,634 |
| Countries That End in Y | 0 | - | 4.90 | 185,624 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,157 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,355 |
| Countries that End in I | 0 | - | 4.94 | 134,836 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,011 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,551 |
| Countries That End in NIA | 0 | - | 4.92 | 109,482 |
| Countries That End in BIA | 0 | - | 4.93 | 148,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,654 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,008 |
| Countries That End in RIA | 0 | - | 4.93 | 126,496 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,586 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,551 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,149 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,492 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,051 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,286 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,640 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,189 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,074 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,173 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,477 |
| Countries that End in L | 0 | - | 4.94 | 156,507 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,807 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,145 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,809 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,685 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,732 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,680 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,078 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,565 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,038 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,529 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,522 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,931 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,584 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,628 |
