| Landlocked Countries | 0 | - | 4.99 | 421,704 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,562,208 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,319 |
| Himalayan Countries | 0 | - | 4.95 | 138,605 |
| Andean Countries | 0 | - | 4.93 | 84,537 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,727 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,727 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,364 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,754 |
| Danube Countries | 0 | - | 4.97 | 71,975 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,976 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,391 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,247 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,725 |
| European Landlocked Countries | 0 | - | 4.99 | 147,110 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,583 |
| Countries with the Most Species | 0 | - | 4.99 | 103,210 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,716 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,574 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,708 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,522 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,205 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,631 |
| Countries in the Alps | 0 | - | 4.87 | 118,164 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,931 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,994 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,626 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,571 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,470 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,927 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,643 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,467 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,163 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,818 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,638 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,504 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,198 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,443 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,494 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,839 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,289 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,371 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,032 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,793 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,025 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,203 |
| Largest Countries By Category | 0 | - | 4.97 | 158,172 |
| Countries by Countries | 0 | - | 4.96 | 63,179 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,653 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,271 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,556 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,652 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,907 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,360 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,439 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,028 |
| Island Countries | 0 | - | 4.99 | 710,946 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,518 |
| Northernmost Countries | 0 | - | 4.99 | 361,828 |
| Countries of South America | 0 | - | 5.00 | 927,038 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,425 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,479 |
| "Land" Countries | 0 | - | 4.98 | 337,262 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,813 |
| Countries with Megacities | 0 | - | 4.99 | 264,398 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,674 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,436 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,940 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,501 |
| Countries by Official Language | 0 | - | 4.95 | 195,205 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,291 |
| Countries in their Native Language | 0 | - | 4.99 | 198,995 |
| Independence from Whom | 0 | - | 4.99 | 212,033 |
| Subdivisions by Country | 0 | - | 4.86 | 50,421 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,682 |
| Megadiverse Countries | 0 | - | 4.96 | 134,986 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,035 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,334 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,220 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,093 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,088 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,578 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,426 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,013 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,633 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,133 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,635 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,861 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,188 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,949 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,339 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,477 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,995 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,112 |
| World Map Quiz | 0 | - | 4.81 | 65,046 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,151 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,329 |
| Countries by Founding Story | 0 | - | 4.95 | 77,346 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,029 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,247 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,966 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,124 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,861 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,981 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,269 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,425 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,551 |
| Widest Countries East to West | 0 | - | 4.92 | 129,619 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,443 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,347 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,111 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,749 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,565 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,842 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,364 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Countries with Double Letters | 0 | - | 4.96 | 96,169 |
| Countries that End in N | 0 | - | 4.95 | 171,050 |
| Countries with Five Letters | 0 | - | 4.96 | 282,310 |
| Countries with Six Letters | 0 | - | 4.94 | 213,480 |
| Countries with W | 0 | - | 4.97 | 160,279 |
| Countries with Z | 0 | - | 4.98 | 291,371 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,641 |
| Countries That End in U | 0 | - | 4.95 | 120,820 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,404 |
| Countries that End in O | 0 | - | 4.92 | 159,487 |
| Countries that End in R | 0 | - | 4.87 | 118,948 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,705 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,015 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,650 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,445 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,358 |
| Countries That End in Y | 0 | - | 4.91 | 185,856 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,864 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,820 |
| Countries that End in I | 0 | - | 4.94 | 135,067 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,034 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,799 |
| Countries That End in NIA | 0 | - | 4.92 | 109,759 |
| Countries That End in BIA | 0 | - | 4.93 | 149,164 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,072 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,394 |
| Countries That End in RIA | 0 | - | 4.93 | 126,784 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,989 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,518 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,660 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,058 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,617 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,556 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,991 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,433 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,494 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,401 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,248 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,945 |
| Countries that End in L | 0 | - | 4.94 | 156,803 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,591 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,256 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,000 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,929 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,973 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,687 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,611 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,951 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,501 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,390 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,839 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,082 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,697 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,851 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,739 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,866 |
| One Border Countries | 0 | - | 4.98 | 469,729 |
| Top Producing Countries | 0 | - | 4.63 | 116,256 |
| ISO Country Codes | 0 | - | 4.48 | 91,185 |
| Countries on the Equator | 0 | - | 4.63 | 140,815 |
| Members of the Arab League | 0 | - | 4.77 | 75,639 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,908 |
| Separatist Movements | 0 | - | 4.45 | 45,903 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,260 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,829 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,271 |
| Westernmost Countries | 0 | - | 4.43 | 62,404 |
| Easternmost Countries | 0 | - | 4.75 | 62,968 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,660 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,647 |
| Indochina Countries | 0 | - | 4.74 | 66,192 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,632 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,362 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,982 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,096 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,396 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,699 |
| Countries that are the Source of Refugees | 0 | - | 4.72 | 64,331 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,955 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,450 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,718 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,593 |
| Flyover Countries | 0 | - | 4.69 | 50,818 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,972 |
