| Landlocked Countries | 0 | - | 4.99 | 419,501 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,376,819 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,225 |
| Himalayan Countries | 0 | - | 4.95 | 137,667 |
| Andean Countries | 0 | - | 4.95 | 84,061 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,305 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,811 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,927 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,422 |
| Danube Countries | 0 | - | 4.97 | 71,724 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,639 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,115 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,750 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,825 |
| European Landlocked Countries | 0 | - | 4.99 | 146,839 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,208 |
| Countries with the Most Species | 0 | - | 4.99 | 102,983 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,363 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,448 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,610 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,348 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,023 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,418 |
| Countries in the Alps | 0 | - | 4.87 | 117,779 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,196 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,483 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,453 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,094 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,166 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,759 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,353 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,244 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,006 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,605 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,514 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,363 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,971 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,238 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,259 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,294 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,098 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,602 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,631 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,631 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,367 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,030 |
| Largest Countries By Category | 0 | - | 4.97 | 157,748 |
| Countries by Countries | 0 | - | 4.96 | 62,898 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,290 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,173 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,482 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,727 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,701 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,385 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,422 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,482 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,758 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,444 |
| Island Countries | 0 | - | 4.99 | 710,000 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,684 |
| Northernmost Countries | 0 | - | 4.99 | 360,749 |
| Countries of South America | 0 | - | 5.00 | 923,742 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,196 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,404 |
| "Land" Countries | 0 | - | 4.98 | 335,937 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,022 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,186 |
| Countries with Megacities | 0 | - | 4.99 | 261,949 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,043 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,084 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,340 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,120 |
| Countries by Official Language | 0 | - | 4.95 | 194,751 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,682 |
| Countries in their Native Language | 0 | - | 4.99 | 198,289 |
| Independence from Whom | 0 | - | 4.99 | 211,466 |
| Subdivisions by Country | 0 | - | 4.86 | 50,311 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,812 |
| Megadiverse Countries | 0 | - | 4.96 | 134,805 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,625 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,209 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,031 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,771 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,418 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,058 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,878 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,518 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,009 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,117 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,746 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,023 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,810 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,183 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,358 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,353 |
| World Map Quiz | 0 | - | 4.81 | 64,688 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,867 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,087 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,819 |
| Countries by Founding Story | 0 | - | 4.95 | 77,119 |
| Countries by Road Signs | 0 | - | 4.98 | 53,708 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,632 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,000 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,719 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,500 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,596 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,739 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,881 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,302 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,336 |
| Widest Countries East to West | 0 | - | 4.92 | 129,422 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,400 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,017 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,016 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,562 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,287 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,609 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,261 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,736 |
| Countries with Double Letters | 0 | - | 4.97 | 95,178 |
| Countries that End in N | 0 | - | 4.95 | 170,178 |
| Countries with Five Letters | 0 | - | 4.96 | 280,806 |
| Countries with Six Letters | 0 | - | 4.94 | 212,613 |
| Countries with W | 0 | - | 4.97 | 159,584 |
| Countries with Z | 0 | - | 4.98 | 289,977 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,820 |
| Countries That End in U | 0 | - | 4.95 | 120,442 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,836 |
| Countries that End in O | 0 | - | 4.92 | 159,230 |
| Countries that End in R | 0 | - | 4.87 | 118,757 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,535 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,436 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,180 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,132 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,726 |
| Countries That End in Y | 0 | - | 4.91 | 185,669 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,332 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,492 |
| Countries that End in I | 0 | - | 4.94 | 134,902 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,207 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,607 |
| Countries That End in NIA | 0 | - | 4.92 | 109,546 |
| Countries That End in BIA | 0 | - | 4.93 | 148,894 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,783 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,113 |
| Countries That End in RIA | 0 | - | 4.93 | 126,569 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,699 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,857 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,302 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,685 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,211 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,364 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,726 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,291 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,192 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,230 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,900 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,606 |
| Countries that End in L | 0 | - | 4.94 | 156,578 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,283 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,163 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,868 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,754 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,807 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,888 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,257 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,695 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,198 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,693 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,628 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,975 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,612 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,705 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,141 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,925 |
| One Border Countries | 0 | - | 4.98 | 467,991 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,314 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,779 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,970 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,609 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,546 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,749 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,320 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,440 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,988 |
| Countries by National Anthem | 0 | - | 4.92 | 71,202 |
| NATO Countries | 0 | - | 4.98 | 279,638 |
| EU Countries Quiz | 0 | - | 4.99 | 273,297 |
| Recently Independent Countries | 0 | - | 4.98 | 159,087 |
| French-Speaking Countries | 0 | - | 4.85 | 270,315 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,775 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,731 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,759 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,331 |
| German-Speaking Countries | 0 | - | 4.91 | 145,411 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,720 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,092 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,366 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,957 |
