| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,909 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,290 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,370 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,956 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,474 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,966 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 103,510 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 139,331 |
| Bordering Countries by HDI Difference | 0 | - | 4.90 | 51,800 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,727 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,590 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,765 |
| One Border Countries | 0 | - | 4.98 | 466,752 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 82,901 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 87,071 |
| Walking Across Borders with Hints #1 | 0 | - | 4.95 | 107,456 |
| Random Countries by Borders | 0 | - | 4.99 | 82,084 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,345 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,035 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,160 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,206,588 |
| Five Most Elevated Countries by Continent | 0 | - | 4.98 | 112,703 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 120,304 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,103 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,847 |
| Longest Border by Country #1 | 0 | - | 4.99 | 145,740 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,810 |
| Countries with Two Borders | 0 | - | 4.99 | 149,500 |
| Countries by Borders #2 | 0 | - | 4.96 | 136,061 |
| Landlocked Countries that Border Each Other | 0 | - | 5.00 | 140,737 |
| Big Countries Bordering Small Countries | 0 | - | 4.99 | 130,592 |
| Largest Countries Bordering Each Other | 0 | - | 4.99 | 115,047 |
| Biggest Countries Bordering the Pacific Ocean | 0 | - | 4.91 | 93,403 |
| Countries by Borders #3 | 0 | - | 4.98 | 97,835 |
| Bordering Countries Forming Words #1 | 0 | - | 4.92 | 75,661 |
| Bordering Countries Forming Words #2 | 0 | - | 4.97 | 32,681 |
| Longest Border by Country #2 | 0 | - | 4.95 | 120,877 |
| Landlocked Countries | 0 | - | 4.99 | 417,210 |
| Five Least Guessed Countries by Continent | 0 | - | 4.97 | 97,817 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,765 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,398 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,859 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,428 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,196 |
| Himalayan Countries | 0 | - | 4.95 | 136,742 |
| Andean Countries | 0 | - | 4.95 | 83,593 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,853 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,146 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,519 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,118 |
| Danube Countries | 0 | - | 4.97 | 71,483 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,294 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,892 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,283 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,277 |
| European Landlocked Countries | 0 | - | 4.99 | 146,187 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,860 |
| Countries with the Most Species | 0 | - | 4.99 | 102,346 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,993 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,353 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,535 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,203 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,850 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,231 |
| Countries in the Alps | 0 | - | 4.86 | 117,423 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,957 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,030 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,295 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,798 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,895 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,314 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,062 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,036 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,857 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,389 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,390 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,233 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,782 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,045 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,052 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,828 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,936 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,463 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,298 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,316 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,727 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,870 |
| Largest Countries By Category | 0 | - | 4.97 | 157,350 |
| Countries by Countries | 0 | - | 4.96 | 62,660 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,137 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,468 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,061 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,170 |
| Island Countries | 0 | - | 4.99 | 709,062 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,030 |
| Northernmost Countries | 0 | - | 4.99 | 359,680 |
| Countries of South America | 0 | - | 5.00 | 920,452 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,985 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,618 |
| "Land" Countries | 0 | - | 4.98 | 335,088 |
| Which Country Does Not Border... | 0 | - | 4.78 | 93,319 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,919 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,842 |
| Five Most Guessed Countries by Continent | 0 | - | 4.97 | 172,130 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,577 |
| European Countries with One Border | 0 | - | 4.97 | 182,230 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,087 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,473 |
| Countries with Megacities | 0 | - | 4.99 | 249,383 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,321 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,654 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,645 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,626 |
| Countries by Official Language | 0 | - | 4.95 | 194,208 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,018 |
| Countries in their Native Language | 0 | - | 4.99 | 197,813 |
| Independence from Whom | 0 | - | 4.99 | 210,951 |
| Subdivisions by Country | 0 | - | 4.86 | 50,219 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,435 |
| Megadiverse Countries | 0 | - | 4.96 | 134,596 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,974 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,105 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,660 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,960 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,509 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,268 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,685 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,400 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,818 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,460 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,609 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,709 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,681 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,890 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,246 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,724 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,168 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,732 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,466 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,859 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,335 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,517 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,680 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,176 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,041 |
| Widest Countries East to West | 0 | - | 4.92 | 129,214 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,339 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,728 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,945 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,992 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,040 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,411 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,148 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,689 |
| Countries with Double Letters | 0 | - | 4.96 | 94,491 |
| Countries that End in N | 0 | - | 4.95 | 168,454 |
| Countries with Five Letters | 0 | - | 4.96 | 270,456 |
| Countries with Six Letters | 0 | - | 4.93 | 211,696 |
| Countries with W | 0 | - | 4.97 | 159,081 |
| Countries with Z | 0 | - | 4.98 | 289,156 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,284 |
| Countries That End in U | 0 | - | 4.95 | 120,137 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,333 |
| Countries that End in O | 0 | - | 4.92 | 158,996 |
| Countries that End in R | 0 | - | 4.87 | 118,584 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,371 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,926 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,853 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,893 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,478 |
| Countries That End in Y | 0 | - | 4.90 | 185,499 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,954 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,183 |
| Countries that End in I | 0 | - | 4.94 | 134,720 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,781 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,453 |
| Countries That End in NIA | 0 | - | 4.92 | 109,344 |
| Countries That End in BIA | 0 | - | 4.93 | 148,643 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,498 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,843 |
| Countries That End in RIA | 0 | - | 4.93 | 126,390 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,415 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,222 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,954 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,281 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,903 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,190 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,512 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,037 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,080 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,306 |
| Countries that End in L | 0 | - | 4.94 | 156,358 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,200 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,097 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,743 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,603 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,661 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,424 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,887 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,419 |
