| Landlocked Countries | 0 | - | 4.99 | 427,730 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,008,650 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,140 |
| Himalayan Countries | 0 | - | 4.93 | 141,027 |
| Andean Countries | 0 | - | 4.94 | 85,903 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,018 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,638 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,562 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,766 |
| Danube Countries | 0 | - | 4.97 | 72,610 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,878 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,026 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,538 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,019 |
| European Landlocked Countries | 0 | - | 4.99 | 147,824 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,610 |
| Countries with the Most Species | 0 | - | 4.99 | 103,673 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,716 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,835 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,976 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,963 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,709 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,178 |
| Countries in the Alps | 0 | - | 4.87 | 119,054 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,130 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,259 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,092 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,222 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,193 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,428 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,648 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,036 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,540 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,353 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,982 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,852 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,709 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,964 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,066 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,263 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,770 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,791 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,907 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,577 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,638 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,643 |
| Largest Countries By Category | 0 | - | 4.97 | 159,197 |
| Countries by Countries | 0 | - | 4.97 | 63,857 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,525 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,460 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,719 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,291 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,771 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,064 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,188 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,655 |
| Island Countries | 0 | - | 4.99 | 713,217 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,750 |
| Northernmost Countries | 0 | - | 4.99 | 364,846 |
| Countries of South America | 0 | - | 5.00 | 934,953 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,323 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,744 |
| "Land" Countries | 0 | - | 4.98 | 339,178 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,662 |
| Countries with Megacities | 0 | - | 4.99 | 268,190 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,303 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,413 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,641 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,532 |
| Countries by Official Language | 0 | - | 4.95 | 196,335 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,090 |
| Countries in their Native Language | 0 | - | 4.99 | 200,045 |
| Independence from Whom | 0 | - | 4.99 | 213,548 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,759 |
| Megadiverse Countries | 0 | - | 4.96 | 149,785 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,221 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,596 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,853 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,273 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,553 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,962 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,380 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,658 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,216 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,900 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,521 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,532 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,251 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,675 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,015 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,566 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,902 |
| World Map Quiz | 0 | - | 4.81 | 65,984 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,184 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,865 |
| Countries by Founding Story | 0 | - | 4.95 | 77,952 |
| Countries by Road Signs | 0 | - | 4.98 | 54,499 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,636 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,294 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,765 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,074 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,618 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,739 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,906 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,788 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,018 |
| Widest Countries East to West | 0 | - | 4.92 | 130,908 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,638 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,474 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,589 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,197 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,496 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,658 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,787 |
| Countries that End in N | 0 | - | 4.95 | 172,786 |
| Countries with Five Letters | 0 | - | 4.96 | 284,844 |
| Countries with Six Letters | 0 | - | 4.94 | 215,120 |
| Countries with W | 0 | - | 4.96 | 161,428 |
| Countries with Z | 0 | - | 4.98 | 293,178 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,802 |
| Countries That End in U | 0 | - | 4.95 | 121,457 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,551 |
| Countries that End in O | 0 | - | 4.92 | 160,424 |
| Countries that End in R | 0 | - | 4.87 | 119,316 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,088 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,267 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,668 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,302 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,977 |
| Countries That End in Y | 0 | - | 4.91 | 186,206 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,523 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,484 |
| Countries that End in I | 0 | - | 4.94 | 135,462 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,456 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,182 |
| Countries That End in NIA | 0 | - | 4.92 | 110,195 |
| Countries That End in BIA | 0 | - | 4.93 | 149,789 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,004 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,952 |
| Countries That End in RIA | 0 | - | 4.93 | 127,198 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,595 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,074 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,468 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,928 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,487 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,960 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,522 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,625 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,117 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,772 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,972 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,688 |
| Countries that End in L | 0 | - | 4.94 | 157,295 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,822 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,394 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,919 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,189 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,575 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,761 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,383 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,572 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,477 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,270 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,363 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,311 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,986 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,895 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,392 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,864 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,215 |
| One Border Countries | 0 | - | 4.98 | 472,865 |
| Top Producing Countries | 0 | - | 4.63 | 116,482 |
| ISO Country Codes | 0 | - | 4.49 | 92,022 |
| Countries on the Equator | 0 | - | 4.63 | 141,334 |
| Members of the Arab League | 0 | - | 4.77 | 75,757 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,142 |
| Separatist Movements | 0 | - | 4.45 | 46,085 |
| Countries with the Best Passports | 0 | - | 4.72 | 85,740 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,963 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,507 |
| Westernmost Countries | 0 | - | 4.43 | 62,583 |
| Easternmost Countries | 0 | - | 4.74 | 63,107 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,796 |
| Top 10 Most Famous Island Countries | 0 | - | 4.67 | 109,170 |
| Indochina Countries | 0 | - | 4.74 | 66,408 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,703 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,875 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,047 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,192 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,535 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,162 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,922 |
| Countries that are the Source of Refugees | 0 | - | 4.80 | 76,206 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,130 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,792 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,927 |
