| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,716 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,896 |
| Landlocked Countries | 0 | - | 4.99 | 422,402 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,604 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,616,081 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,335 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,215 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,922 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,729 |
| Himalayan Countries | 0 | - | 4.95 | 138,924 |
| Andean Countries | 0 | - | 4.93 | 84,738 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,941 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,006 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,552 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,889 |
| Danube Countries | 0 | - | 4.97 | 72,074 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,093 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,475 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,404 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,888 |
| European Landlocked Countries | 0 | - | 4.99 | 147,197 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,730 |
| Countries with the Most Species | 0 | - | 4.99 | 103,280 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,847 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,620 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,741 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,578 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,272 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,713 |
| Countries in the Alps | 0 | - | 4.87 | 118,279 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,386 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,121 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,695 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,638 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,565 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,985 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,723 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,547 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,898 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,553 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,262 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,519 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,574 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,005 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,349 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,283 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,148 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,151 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,248 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,269 |
| Largest Countries By Category | 0 | - | 4.97 | 158,292 |
| Countries by Countries | 0 | - | 4.96 | 63,289 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,749 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,714 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,820 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,912 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,629 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,604 |
| Island Countries | 0 | - | 4.99 | 711,189 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,390 |
| Northernmost Countries | 0 | - | 4.99 | 362,161 |
| Countries of South America | 0 | - | 5.00 | 927,963 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,700 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,623 |
| "Land" Countries | 0 | - | 4.98 | 337,457 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,834 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,511 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,700 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,680 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,720 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,014 |
| Countries with Megacities | 0 | - | 4.99 | 264,850 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,847 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,532 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,105 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,611 |
| Countries by Official Language | 0 | - | 4.95 | 195,329 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,495 |
| Countries in their Native Language | 0 | - | 4.99 | 199,127 |
| Independence from Whom | 0 | - | 4.99 | 212,198 |
| Subdivisions by Country | 0 | - | 4.87 | 50,447 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,804 |
| Megadiverse Countries | 0 | - | 4.96 | 135,053 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,176 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,381 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,260 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,122 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,186 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,618 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,530 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,059 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,681 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,755 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,913 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,229 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,988 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,307 |
| World Map Quiz | 0 | - | 4.81 | 65,149 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,494 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,390 |
| Countries by Founding Story | 0 | - | 4.95 | 77,411 |
| Countries by Road Signs | 0 | - | 4.98 | 54,054 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,170 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,326 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,033 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,321 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,934 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,052 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,331 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,604 |
| Widest Countries East to West | 0 | - | 4.92 | 129,691 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,466 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,429 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,137 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,796 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,626 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,911 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,388 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,810 |
| Countries with Double Letters | 0 | - | 4.96 | 96,313 |
| Countries that End in N | 0 | - | 4.95 | 171,209 |
| Countries with Five Letters | 0 | - | 4.96 | 282,653 |
| Countries with Six Letters | 0 | - | 4.94 | 213,649 |
| Countries with W | 0 | - | 4.97 | 160,390 |
| Countries with Z | 0 | - | 4.98 | 291,558 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,762 |
| Countries That End in U | 0 | - | 4.95 | 120,879 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,520 |
| Countries that End in O | 0 | - | 4.92 | 159,535 |
| Countries that End in R | 0 | - | 4.87 | 118,981 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,752 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,169 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,731 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,501 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,423 |
| Countries That End in Y | 0 | - | 4.91 | 185,896 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,981 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,898 |
| Countries that End in I | 0 | - | 4.94 | 135,120 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,151 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,842 |
| Countries That End in NIA | 0 | - | 4.92 | 109,808 |
| Countries That End in BIA | 0 | - | 4.93 | 149,241 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,147 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,451 |
| Countries That End in RIA | 0 | - | 4.93 | 126,830 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,044 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,718 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,755 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,178 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,732 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,596 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,059 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,457 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,556 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,448 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,325 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,022 |
| Countries that End in L | 0 | - | 4.94 | 156,867 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,937 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,279 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,048 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,978 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,022 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,816 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,706 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,167 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,881 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,512 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,900 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,118 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,861 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,130 |
| One Border Countries | 0 | - | 4.98 | 470,095 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 71,942 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,388 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,326 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,841 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,978 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,292 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,216 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,779 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,255 |
| Countries by National Anthem | 0 | - | 4.93 | 71,304 |
| NATO Countries | 0 | - | 4.98 | 281,720 |
| EU Countries Quiz | 0 | - | 4.99 | 275,755 |
| Recently Independent Countries | 0 | - | 4.98 | 159,516 |
| French-Speaking Countries | 0 | - | 4.85 | 270,950 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,911 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,655 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,514 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,695 |
