| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,618 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,731 |
| Landlocked Countries | 0 | - | 4.99 | 419,795 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,347 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,403,561 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,176 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 98,766 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,730 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,362 |
| Himalayan Countries | 0 | - | 4.95 | 137,791 |
| Andean Countries | 0 | - | 4.95 | 84,110 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,342 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,890 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,979 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,454 |
| Danube Countries | 0 | - | 4.97 | 71,749 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,676 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,149 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,821 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,892 |
| European Landlocked Countries | 0 | - | 4.99 | 146,873 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,256 |
| Countries with the Most Species | 0 | - | 4.99 | 103,015 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,416 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,460 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,628 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,378 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,051 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,449 |
| Countries in the Alps | 0 | - | 4.87 | 117,835 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,231 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,561 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,474 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,353 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,219 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,783 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,384 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,269 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,028 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,632 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,528 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,377 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,996 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,269 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,289 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,383 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,123 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,631 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,675 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,791 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,470 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,051 |
| Largest Countries By Category | 0 | - | 4.97 | 157,798 |
| Countries by Countries | 0 | - | 4.97 | 62,937 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,345 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,184 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,490 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,423 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,654 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,746 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,850 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,839 |
| Island Countries | 0 | - | 4.99 | 710,130 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,040 |
| Northernmost Countries | 0 | - | 4.99 | 360,907 |
| Countries of South America | 0 | - | 5.00 | 924,147 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,849 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,580 |
| "Land" Countries | 0 | - | 4.98 | 336,018 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,633 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,412 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,441 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,606 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,847 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,283 |
| Countries with Megacities | 0 | - | 4.99 | 262,553 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,115 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,127 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,415 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,178 |
| Countries by Official Language | 0 | - | 4.95 | 194,812 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,766 |
| Countries in their Native Language | 0 | - | 4.99 | 198,356 |
| Independence from Whom | 0 | - | 4.99 | 211,550 |
| Subdivisions by Country | 0 | - | 4.86 | 50,329 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,866 |
| Megadiverse Countries | 0 | - | 4.96 | 134,829 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,685 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,794 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,039 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,822 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,439 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,106 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,898 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,533 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,022 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,195 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,766 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,044 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,831 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,211 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,380 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,458 |
| World Map Quiz | 0 | - | 4.81 | 64,744 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,023 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,130 |
| Countries by Founding Story | 0 | - | 4.95 | 77,148 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,672 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,026 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,759 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,608 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,627 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,771 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,908 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,321 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,362 |
| Widest Countries East to West | 0 | - | 4.92 | 129,445 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,070 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,034 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,587 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,326 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,645 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,282 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,745 |
| Countries with Double Letters | 0 | - | 4.97 | 95,271 |
| Countries that End in N | 0 | - | 4.95 | 170,279 |
| Countries with Five Letters | 0 | - | 4.96 | 281,033 |
| Countries with Six Letters | 0 | - | 4.94 | 212,712 |
| Countries with W | 0 | - | 4.97 | 159,645 |
| Countries with Z | 0 | - | 4.98 | 290,495 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,892 |
| Countries That End in U | 0 | - | 4.95 | 120,478 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,903 |
| Countries that End in O | 0 | - | 4.92 | 159,255 |
| Countries that End in R | 0 | - | 4.87 | 118,777 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,550 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,503 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,265 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,167 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,780 |
| Countries That End in Y | 0 | - | 4.91 | 185,688 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,433 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,529 |
| Countries that End in I | 0 | - | 4.94 | 134,915 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,627 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,630 |
| Countries That End in NIA | 0 | - | 4.92 | 109,577 |
| Countries That End in BIA | 0 | - | 4.93 | 148,924 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,826 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,150 |
| Countries That End in RIA | 0 | - | 4.93 | 126,596 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,732 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,948 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,342 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,724 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,254 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,389 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,749 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,326 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,239 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,248 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,928 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,654 |
| Countries that End in L | 0 | - | 4.94 | 156,611 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,469 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,173 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,882 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,784 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,831 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,954 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,312 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,731 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,245 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,735 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,651 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,993 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,642 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,075 |
| One Border Countries | 0 | - | 4.98 | 468,205 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 71,824 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,330 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,826,129 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,581 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,651 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,625 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,810 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,469 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,017 |
| Countries by National Anthem | 0 | - | 4.92 | 71,212 |
| NATO Countries | 0 | - | 4.98 | 279,844 |
| EU Countries Quiz | 0 | - | 4.99 | 273,511 |
| Recently Independent Countries | 0 | - | 4.98 | 159,152 |
| French-Speaking Countries | 0 | - | 4.85 | 270,372 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,791 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,835 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,950 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,588 |
| German-Speaking Countries | 0 | - | 4.91 | 145,477 |
