| Landlocked Countries | 0 | - | 4.99 | 414,877 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,019,150 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,089 |
| Himalayan Countries | 0 | - | 4.95 | 135,807 |
| Andean Countries | 0 | - | 4.94 | 83,083 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,409 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,512 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,112 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,772 |
| Danube Countries | 0 | - | 4.97 | 71,213 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,937 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,664 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,762 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,674 |
| European Landlocked Countries | 0 | - | 4.99 | 145,908 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,426 |
| Countries with the Most Species | 0 | - | 4.99 | 95,314 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,573 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,245 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,421 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,033 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,677 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,045 |
| Countries in the Alps | 0 | - | 4.86 | 117,037 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,705 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,497 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,127 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,536 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,324 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,107 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,733 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,863 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,644 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,170 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,250 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,112 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,573 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,848 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,855 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,348 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,758 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,330 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,969 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,967 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,066 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,694 |
| Largest Countries By Category | 0 | - | 4.97 | 156,952 |
| Countries by Countries | 0 | - | 4.96 | 62,397 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,586 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,005 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,368 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,144 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,239 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,886 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,726,916 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,416 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,567 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,479 |
| Island Countries | 0 | - | 4.99 | 708,098 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,157 |
| Northernmost Countries | 0 | - | 4.99 | 358,444 |
| Countries of South America | 0 | - | 5.00 | 916,955 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,107 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,627 |
| "Land" Countries | 0 | - | 4.98 | 333,975 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,691 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,763 |
| Countries with Megacities | 0 | - | 4.99 | 247,904 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,643 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,272 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,030 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,225 |
| Countries by Official Language | 0 | - | 4.95 | 193,047 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,512 |
| Countries in their Native Language | 0 | - | 4.99 | 196,891 |
| Independence from Whom | 0 | - | 4.99 | 210,022 |
| Subdivisions by Country | 0 | - | 4.86 | 50,119 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,976 |
| Megadiverse Countries | 0 | - | 4.97 | 134,009 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,054 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,982 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,492 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,891 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,817 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,086 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,264 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,321 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,273 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,773 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,815 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,482 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,585 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,566 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,762 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,096 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,959 |
| World Map Quiz | 0 | - | 4.81 | 63,709 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,387 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,496 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,280 |
| Countries by Founding Story | 0 | - | 4.95 | 76,664 |
| Countries by Road Signs | 0 | - | 4.98 | 53,242 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,680 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,442 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,173 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,170 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,058 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,253 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,454 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,038 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,493 |
| Widest Countries East to West | 0 | - | 4.92 | 128,983 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,272 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,411 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,629 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,821 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,764 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,177 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 75,764 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,631 |
| Countries with Double Letters | 0 | - | 4.97 | 93,616 |
| Countries that End in N | 0 | - | 4.94 | 157,085 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,944 |
| Countries with Six Letters | 0 | - | 4.93 | 210,615 |
| Countries with W | 0 | - | 4.97 | 158,380 |
| Countries with Z | 0 | - | 4.98 | 288,153 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,710 |
| Countries That End in U | 0 | - | 4.95 | 119,595 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,818 |
| Countries that End in O | 0 | - | 4.92 | 158,629 |
| Countries that End in R | 0 | - | 4.87 | 118,352 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,914 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,344 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,497 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,614 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,159 |
| Countries That End in Y | 0 | - | 4.90 | 185,268 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,564 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,851 |
| Countries that End in I | 0 | - | 4.94 | 134,521 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,402 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,276 |
| Countries That End in NIA | 0 | - | 4.92 | 109,090 |
| Countries That End in BIA | 0 | - | 4.92 | 147,822 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,212 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,603 |
| Countries That End in RIA | 0 | - | 4.93 | 126,178 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,137 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,610 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,636 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,995 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,513 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,001 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,244 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,760 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,647 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,871 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,289 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,951 |
| Countries that End in L | 0 | - | 4.94 | 156,134 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,896 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,016 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,599 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,417 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,501 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,826 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,560 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,271 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,602 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,956 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,879 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,792 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,227 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,452 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,398 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,218 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,174 |
| One Border Countries | 0 | - | 4.98 | 465,328 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,728 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,805,987 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,594,467 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,103 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,391 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,100 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,592 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,882 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,464 |
| Countries by National Anthem | 0 | - | 4.92 | 71,064 |
| NATO Countries | 0 | - | 4.98 | 276,943 |
| EU Countries Quiz | 0 | - | 4.99 | 270,690 |
| Recently Independent Countries | 0 | - | 4.98 | 158,144 |
| French-Speaking Countries | 0 | - | 4.85 | 269,158 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,428 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,411 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,531 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,161 |
| German-Speaking Countries | 0 | - | 4.89 | 123,579 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,813 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,460 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,666 |
