| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,825 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,234 |
| Landlocked Countries | 0 | - | 4.99 | 425,661 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,889 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,868,239 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,512 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,418 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 62,091 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,169 |
| Himalayan Countries | 0 | - | 4.93 | 140,172 |
| Andean Countries | 0 | - | 4.94 | 85,394 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,545 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,936 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,124 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,399 |
| Danube Countries | 0 | - | 4.97 | 72,362 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,571 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,821 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,085 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,578 |
| European Landlocked Countries | 0 | - | 4.99 | 147,592 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,273 |
| Countries with the Most Species | 0 | - | 4.99 | 103,552 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,383 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,768 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,877 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,832 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,567 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,998 |
| Countries in the Alps | 0 | - | 4.87 | 118,749 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,582 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,832 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,948 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,011 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,934 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,238 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,379 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,846 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,410 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,159 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,856 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,735 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,545 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,770 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,872 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,798 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,597 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 66,863 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,644 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,628 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,108 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,492 |
| Largest Countries By Category | 0 | - | 4.97 | 158,840 |
| Countries by Countries | 0 | - | 4.96 | 63,627 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,238 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,394 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,664 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,095 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,803,551 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,304 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,647 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,628 |
| Island Countries | 0 | - | 4.99 | 712,510 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,564 |
| Northernmost Countries | 0 | - | 4.99 | 363,920 |
| Countries of South America | 0 | - | 5.00 | 932,508 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,074 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,798 |
| "Land" Countries | 0 | - | 4.98 | 338,346 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,925 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,653 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 156,018 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,756 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,314 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,117 |
| Countries with Megacities | 0 | - | 4.99 | 267,040 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,816 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,116 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,132 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,225 |
| Countries by Official Language | 0 | - | 4.95 | 195,968 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,599 |
| Countries in their Native Language | 0 | - | 4.99 | 199,715 |
| Independence from Whom | 0 | - | 4.99 | 213,030 |
| Subdivisions by Country | 0 | - | 4.87 | 50,610 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,415 |
| Megadiverse Countries | 0 | - | 4.96 | 135,272 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,928 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,532 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,642 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,225 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,886 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,838 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,101 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,565 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,030 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,251 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,506 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,370 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,440 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,139 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,571 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,834 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,325 |
| World Map Quiz | 0 | - | 4.81 | 65,703 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,176 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,704 |
| Countries by Founding Story | 0 | - | 4.95 | 77,786 |
| Countries by Road Signs | 0 | - | 4.98 | 54,338 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,228 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,066 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,547 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,543 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,419 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,518 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,721 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,685 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,686 |
| Widest Countries East to West | 0 | - | 4.92 | 130,448 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,595 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,245 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,513 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,057 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,959 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,471 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,500 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,888 |
| Countries with Double Letters | 0 | - | 4.96 | 97,047 |
| Countries that End in N | 0 | - | 4.95 | 171,906 |
| Countries with Five Letters | 0 | - | 4.96 | 283,730 |
| Countries with Six Letters | 0 | - | 4.94 | 214,447 |
| Countries with W | 0 | - | 4.96 | 160,914 |
| Countries with Z | 0 | - | 4.98 | 292,417 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,275 |
| Countries That End in U | 0 | - | 4.95 | 121,178 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,084 |
| Countries that End in O | 0 | - | 4.92 | 160,204 |
| Countries that End in R | 0 | - | 4.87 | 119,177 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,928 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,818 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,137 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,819 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,744 |
| Countries That End in Y | 0 | - | 4.91 | 186,084 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,443 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,268 |
| Countries that End in I | 0 | - | 4.94 | 135,310 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,608 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,053 |
| Countries That End in NIA | 0 | - | 4.92 | 110,046 |
| Countries That End in BIA | 0 | - | 4.93 | 149,568 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,525 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,764 |
| Countries That End in RIA | 0 | - | 4.93 | 127,046 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,382 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,574 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,173 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,616 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,161 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,800 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,325 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,535 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,900 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,648 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,717 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,407 |
| Countries that End in L | 0 | - | 4.94 | 157,122 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,964 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,342 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,494 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,977 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,440 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,405 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,126 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,427 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,248 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,962 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,205 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,237 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,944 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,445 |
| One Border Countries | 0 | - | 4.98 | 471,878 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,695 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 72,093 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,462 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,848,284 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,652,134 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,316 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,007 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,638 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,209 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,604 |
| Countries by National Anthem | 0 | - | 4.92 | 71,405 |
| NATO Countries | 0 | - | 4.98 | 283,368 |
| EU Countries Quiz | 0 | - | 4.99 | 277,833 |
| Recently Independent Countries | 0 | - | 4.98 | 160,330 |
| French-Speaking Countries | 0 | - | 4.85 | 271,653 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,037 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,749 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,318 |
