| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,825 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,235 |
| Landlocked Countries | 0 | - | 4.99 | 425,675 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,889 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,869,118 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,513 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,418 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 62,091 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,178 |
| Himalayan Countries | 0 | - | 4.93 | 140,179 |
| Andean Countries | 0 | - | 4.94 | 85,400 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,549 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,940 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,126 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,401 |
| Danube Countries | 0 | - | 4.97 | 72,365 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,572 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,822 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,087 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,581 |
| European Landlocked Countries | 0 | - | 4.99 | 147,592 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,275 |
| Countries with the Most Species | 0 | - | 4.99 | 103,552 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,384 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,768 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,878 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,833 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,569 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,000 |
| Countries in the Alps | 0 | - | 4.87 | 118,750 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,589 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,834 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,951 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,012 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,935 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,238 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,381 |
| 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 | 63,160 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,858 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,736 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,546 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,773 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,874 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,801 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,597 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 67,300 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,648 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,636 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,108 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,494 |
| Largest Countries By Category | 0 | - | 4.97 | 158,842 |
| Countries by Countries | 0 | - | 4.96 | 63,627 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,241 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,395 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,664 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,096 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,803,603 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,309 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,650 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,630 |
| Island Countries | 0 | - | 4.99 | 712,520 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,575 |
| Northernmost Countries | 0 | - | 4.99 | 363,933 |
| Countries of South America | 0 | - | 5.00 | 932,515 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,091 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,834 |
| "Land" Countries | 0 | - | 4.98 | 338,350 |
| 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 | 156,019 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,756 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,349 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,119 |
| Countries with Megacities | 0 | - | 4.99 | 267,043 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,816 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,117 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,134 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,225 |
| Countries by Official Language | 0 | - | 4.95 | 195,970 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,604 |
| Countries in their Native Language | 0 | - | 4.99 | 199,717 |
| Independence from Whom | 0 | - | 4.99 | 213,031 |
| Subdivisions by Country | 0 | - | 4.87 | 50,610 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,416 |
| 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 | 126,645 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,226 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,896 |
| 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 | 154,566 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,031 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,252 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,507 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,370 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,441 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,141 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,573 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,837 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,329 |
| World Map Quiz | 0 | - | 4.81 | 65,705 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,179 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,708 |
| Countries by Founding Story | 0 | - | 4.95 | 77,786 |
| Countries by Road Signs | 0 | - | 4.98 | 54,340 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,231 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,068 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,550 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,547 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,420 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,523 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,721 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,686 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,687 |
| Widest Countries East to West | 0 | - | 4.92 | 130,448 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,596 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,247 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,514 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,057 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,961 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,473 |
| 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 | 97,048 |
| Countries that End in N | 0 | - | 4.95 | 171,909 |
| Countries with Five Letters | 0 | - | 4.96 | 283,732 |
| Countries with Six Letters | 0 | - | 4.94 | 214,450 |
| Countries with W | 0 | - | 4.96 | 160,916 |
| Countries with Z | 0 | - | 4.98 | 292,422 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,276 |
| Countries That End in U | 0 | - | 4.95 | 121,180 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,086 |
| Countries that End in O | 0 | - | 4.92 | 160,206 |
| Countries that End in R | 0 | - | 4.87 | 119,177 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,930 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,818 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,139 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,820 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,746 |
| Countries That End in Y | 0 | - | 4.91 | 186,086 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,445 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,269 |
| Countries that End in I | 0 | - | 4.94 | 135,310 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,609 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,054 |
| Countries That End in NIA | 0 | - | 4.92 | 110,046 |
| Countries That End in BIA | 0 | - | 4.93 | 149,569 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,526 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,766 |
| Countries That End in RIA | 0 | - | 4.93 | 127,049 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,383 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,575 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,175 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,616 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,162 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,800 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,326 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,535 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,901 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,649 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,717 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,411 |
| Countries that End in L | 0 | - | 4.94 | 157,122 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,968 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,342 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,497 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,982 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,442 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,409 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,128 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,428 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,249 |
| 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 | 1,453,966 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,448 |
| One Border Countries | 0 | - | 4.98 | 471,888 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,696 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 72,094 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,463 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,848,340 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,652,244 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,316 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,009 |
| 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 | 283,370 |
| EU Countries Quiz | 0 | - | 4.99 | 277,838 |
| Recently Independent Countries | 0 | - | 4.98 | 160,330 |
| French-Speaking Countries | 0 | - | 4.85 | 271,653 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,038 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,756 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,325 |
