| German-Speaking Countries | 0 | - | 4.88 | 117,947 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,020 |
| Countries by Official Language | 0 | - | 4.96 | 174,148 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,222 |
| Countries in their Native Language | 0 | - | 4.98 | 179,382 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,484 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,367,632 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 329,722 |
| English Speaking Countries | 0 | - | 4.72 | 340,478 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,123,649 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,193,149 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.96 | 119,062 |
| Members of the Arab League | 0 | - | 4.85 | 64,511 |
| Sahara Desert Countries | 0 | - | 4.97 | 128,856 |
| Himalayan Countries | 0 | - | 4.95 | 106,788 |
| Andean Countries | 0 | - | 4.91 | 59,393 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,449 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,230 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,594 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,512 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,819 |
| Danube Countries | 0 | - | 4.96 | 56,972 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,994 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,098 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,013 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,928 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,201 |
| European Landlocked Countries | 0 | - | 4.99 | 136,386 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,337 |
| Countries with the Most Species | 0 | - | 4.99 | 89,694 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,844 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,873 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,162 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,695 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,655 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,928 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,532 |
| Countries in the Alps | 0 | - | 4.84 | 103,289 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,910 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,345 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,952 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,001 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,470 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,974 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,120 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,487 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,519 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,070 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,829 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,803 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,859 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,178 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,343 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,909 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,362 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,662 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,731 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,365 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,109 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,573 |
| Largest Countries By Category | 0 | - | 4.97 | 145,729 |
| Countries by Countries | 0 | - | 4.96 | 55,137 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,387 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,968 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 44,917 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,940 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,083 |
| Island Countries Quiz | 0 | - | 4.99 | 664,757 |
| Biggest Countries by Area | 0 | - | 5.00 | 940,276 |
| Northernmost Countries | 0 | - | 4.99 | 329,291 |
| Countries of South America | 0 | - | 5.00 | 802,262 |
| Countries of Oceania | 0 | - | 5.00 | 904,082 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,592,670 |
| Top World Languages | 0 | - | 4.92 | 716,003 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.71 | 105,154 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,602 |
| Countries with Megacities | 0 | - | 4.99 | 199,790 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,392 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,989 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 96,989 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,958 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,557 |
| Independence from Whom | 0 | - | 4.99 | 187,549 |
| Subdivisions by Country | 0 | - | 4.82 | 46,689 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,581 |
| Megadiverse Countries | 0 | - | 4.96 | 126,159 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,125 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,633 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,346 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,503 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,805 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,674 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,389 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,672 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,471 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,944 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,581 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,145 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,015 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,639 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,368 |
| World Map Quiz | 0 | - | 4.91 | 50,433 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,066 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,155 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,385 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,887 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,112 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,725 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,037 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,414 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,482 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,540 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,040 |
| Widest Countries East to West | 0 | - | 4.93 | 120,001 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,992 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,810 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,135 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,000 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,735 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,626 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,248 |
| Countries with Double Letters | 0 | - | 4.96 | 69,967 |
| Countries that End in N | 0 | - | 4.94 | 134,190 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,543 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 188,918 |
| Countries with W | 0 | - | 4.96 | 124,177 |
| Countries with Z | 0 | - | 4.98 | 246,216 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,380 |
| Countries That End in U | 0 | - | 4.95 | 108,309 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,798 |
| Countries that End in O | 0 | - | 4.92 | 147,538 |
| Countries that End in R | 0 | - | 4.84 | 96,842 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,651 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,698 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,909 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,114 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,051 |
| Countries That End in Y | 0 | - | 4.90 | 161,996 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,067 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,544 |
| Countries that End in I | 0 | - | 4.92 | 114,850 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,603 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,953 |
| Countries That End in NIA | 0 | - | 4.93 | 101,361 |
| Countries That End in BIA | 0 | - | 4.91 | 126,732 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,270 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,386 |
| Countries That End in RIA | 0 | - | 4.90 | 101,464 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,105 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 202,937 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,735 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,747 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,385 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,214 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,448 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,281 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,294 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,629 |
| Countries that End in L | 0 | - | 4.95 | 135,251 |
| "Land" Countries | 0 | - | 4.98 | 291,238 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,423 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,299 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,849 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,652 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,164 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,764 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 168,816 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,203 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,026 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,209 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,612 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,269 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,775 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,832 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,960 |
| Places in their Native Language #1 | 0 | - | 4.86 | 212,047 |
| Places in their Native Language #2 | 0 | - | 4.88 | 113,839 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,320,212 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,397 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,092,262 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,430,090 |
| One Border Countries | 0 | - | 4.98 | 412,721 |
| French-Speaking Countries Quiz | 0 | - | 4.78 | 214,093 |
| Countries With the Most Italian Speakers | 0 | - | 4.51 | 51,220 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,379 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,779 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 246,808 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,816 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,860 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,364 |
| Capitals in their Native Languages | 0 | - | 4.94 | 127,752 |
| Countries by National Anthem | 0 | - | 4.95 | 62,028 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,469 |
| EU Countries Quiz | 0 | - | 4.99 | 229,698 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,456 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,151 |
| Countries That Use the Euro | 0 | - | 4.93 | 64,733 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 227,601 |
| Countries with Nuclear Weapons | 0 | - | 4.88 | 219,099 |
