| Landlocked Countries | 0 | - | 4.99 | 416,553 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,154,879 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,880 |
| Himalayan Countries | 0 | - | 4.95 | 136,459 |
| Andean Countries | 0 | - | 4.95 | 83,466 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,726 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,963 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,403 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,007 |
| Danube Countries | 0 | - | 4.97 | 71,386 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,194 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,841 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,133 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,092 |
| European Landlocked Countries | 0 | - | 4.99 | 146,120 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,749 |
| Countries with the Most Species | 0 | - | 4.99 | 101,322 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,881 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,326 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,503 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,152 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,800 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,176 |
| Countries in the Alps | 0 | - | 4.86 | 117,308 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,889 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,867 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,246 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,735 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,809 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,248 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,973 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,989 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,792 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,323 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,354 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,200 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,714 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,986 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,998 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,687 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,887 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,422 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,227 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,942 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,546 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,818 |
| Largest Countries By Category | 0 | - | 4.97 | 157,237 |
| Countries by Countries | 0 | - | 4.96 | 62,583 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,862 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,077 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,075 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,858 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,711 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,789 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,693 |
| Island Countries | 0 | - | 4.99 | 708,770 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,214 |
| Northernmost Countries | 0 | - | 4.99 | 359,313 |
| Countries of South America | 0 | - | 5.00 | 919,521 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,474 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,240 |
| "Land" Countries | 0 | - | 4.98 | 334,562 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,244 |
| Countries with Megacities | 0 | - | 4.99 | 248,874 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,099 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,529 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,457 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,478 |
| Countries by Official Language | 0 | - | 4.95 | 193,979 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,488 |
| Countries in their Native Language | 0 | - | 4.99 | 197,607 |
| Independence from Whom | 0 | - | 4.99 | 210,775 |
| Subdivisions by Country | 0 | - | 4.86 | 50,192 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,305 |
| Megadiverse Countries | 0 | - | 4.96 | 134,528 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,801 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,072 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,622 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,946 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,426 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,208 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,565 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,540 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,366 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,804 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,144 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,578 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,680 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,636 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,849 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,196 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,179 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,522 |
| World Map Quiz | 0 | - | 4.81 | 64,060 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,316 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,681 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,041 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,653 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,384 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,673 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,256 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,450 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,612 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,140 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,634 |
| Widest Countries East to West | 0 | - | 4.92 | 129,131 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,326 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,632 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,906 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,945 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,965 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,346 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,079 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,669 |
| Countries with Double Letters | 0 | - | 4.96 | 94,083 |
| Countries that End in N | 0 | - | 4.95 | 164,883 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,514 |
| Countries with Six Letters | 0 | - | 4.93 | 211,079 |
| Countries with W | 0 | - | 4.97 | 158,765 |
| Countries with Z | 0 | - | 4.98 | 288,697 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,999 |
| Countries That End in U | 0 | - | 4.95 | 119,889 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,125 |
| Countries that End in O | 0 | - | 4.92 | 158,841 |
| Countries that End in R | 0 | - | 4.87 | 118,492 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,119 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,698 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,720 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,800 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,359 |
| Countries That End in Y | 0 | - | 4.90 | 185,403 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,809 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,068 |
| Countries that End in I | 0 | - | 4.94 | 134,653 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,672 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,399 |
| Countries That End in NIA | 0 | - | 4.92 | 109,283 |
| Countries That End in BIA | 0 | - | 4.93 | 148,545 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,411 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,756 |
| Countries That End in RIA | 0 | - | 4.93 | 126,321 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,313 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,050 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,848 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,184 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,759 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,134 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,424 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,929 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,825 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,986 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,501 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,184 |
| Countries that End in L | 0 | - | 4.94 | 156,272 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,831 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,060 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,708 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,555 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,609 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,290 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,792 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,303 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,809 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,231 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,037 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,868 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,288 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,513 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,509 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,743 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,798 |
| One Border Countries | 0 | - | 4.98 | 466,355 |
| Top Producing Countries | 0 | - | 4.63 | 116,034 |
| ISO Country Codes | 0 | - | 4.45 | 82,268 |
| Countries on the Equator | 0 | - | 4.63 | 140,487 |
| Members of the Arab League | 0 | - | 4.77 | 75,530 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,689 |
| Separatist Movements | 0 | - | 4.44 | 45,740 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,813 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,694 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,056 |
| Westernmost Countries | 0 | - | 4.50 | 49,465 |
| Easternmost Countries | 0 | - | 4.75 | 62,738 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,546 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,152 |
| Indochina Countries | 0 | - | 4.74 | 66,030 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,556 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,147 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,917 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,013 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,274 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,524 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,695 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,807 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,152 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,515 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,368 |
| Flyover Countries | 0 | - | 4.68 | 50,654 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,582 |
