| Landmarks of Countries #1 | 0 | - | 4.88 | 107,411 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,914,068 |
| Landlocked Countries | 0 | - | 4.99 | 413,533 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,716,018 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,558 |
| Himalayan Countries | 0 | - | 4.95 | 135,329 |
| Andean Countries | 0 | - | 4.94 | 82,810 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,205 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,184 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,884 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,591 |
| Danube Countries | 0 | - | 4.97 | 71,071 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,751 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,530 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,457 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,378 |
| European Landlocked Countries | 0 | - | 4.99 | 145,743 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,189 |
| Countries with the Most Species | 0 | - | 4.99 | 95,238 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,328 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,365 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,951 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,571 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,945 |
| Countries in the Alps | 0 | - | 4.86 | 116,810 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,554 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,245 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,997 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,413 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,153 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,993 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,563 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,743 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,255 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,043 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,193 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,039 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,449 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,733 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,746 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,050 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,634 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,252 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,763 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,242 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,659 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,598 |
| Largest Countries By Category | 0 | - | 4.97 | 156,746 |
| Countries by Countries | 0 | - | 4.96 | 62,249 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,373 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,961 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,330 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,758 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,826 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,095 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,810 |
| Island Countries | 0 | - | 4.99 | 707,591 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,364 |
| Northernmost Countries | 0 | - | 4.99 | 357,688 |
| Countries of South America | 0 | - | 5.00 | 914,592 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,307 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,073 |
| "Land" Countries | 0 | - | 4.98 | 333,632 |
| Landmarks of Countries #2 | 0 | - | 4.51 | 54,090 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,129 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,159 |
| Countries with Megacities | 0 | - | 4.99 | 246,821 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,076 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,945 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,495 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,832 |
| Countries by Official Language | 0 | - | 4.95 | 192,759 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,107 |
| Countries in their Native Language | 0 | - | 4.99 | 196,625 |
| Independence from Whom | 0 | - | 4.99 | 209,674 |
| Subdivisions by Country | 0 | - | 4.86 | 50,063 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,733 |
| Megadiverse Countries | 0 | - | 4.97 | 133,894 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,788 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,918 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,425 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,857 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,645 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,992 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,937 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,139 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,210 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,739 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,559 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,488 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,500 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,668 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,019 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,568 |
| World Map Quiz | 0 | - | 4.81 | 63,491 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,642 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,320 |
| Countries by Founding Story | 0 | - | 4.95 | 76,526 |
| Countries by Road Signs | 0 | - | 4.98 | 53,094 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,331 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,980 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,944 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,733 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,846 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,053 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,268 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,940 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,332 |
| Widest Countries East to West | 0 | - | 4.92 | 128,600 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,216 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,202 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,562 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,682 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,622 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,034 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,050 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,579 |
| Countries with Double Letters | 0 | - | 4.97 | 93,375 |
| Countries that End in N | 0 | - | 4.94 | 156,761 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,670 |
| Countries with Six Letters | 0 | - | 4.93 | 210,345 |
| Countries with W | 0 | - | 4.97 | 158,217 |
| Countries with Z | 0 | - | 4.98 | 287,862 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,539 |
| Countries That End in U | 0 | - | 4.95 | 119,512 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,529 |
| Countries that End in O | 0 | - | 4.92 | 158,549 |
| Countries that End in R | 0 | - | 4.87 | 118,270 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,856 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,004 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,313 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,484 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,003 |
| Countries That End in Y | 0 | - | 4.90 | 185,197 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,359 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,678 |
| Countries that End in I | 0 | - | 4.94 | 134,408 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,183 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,190 |
| Countries That End in NIA | 0 | - | 4.92 | 109,003 |
| Countries That End in BIA | 0 | - | 4.92 | 147,709 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,053 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,480 |
| Countries That End in RIA | 0 | - | 4.93 | 126,073 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,998 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,170 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,514 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,883 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,349 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,926 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,114 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,637 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,499 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,811 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,124 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,802 |
| Countries that End in L | 0 | - | 4.94 | 155,716 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,153 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,987 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,507 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,287 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,422 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,927 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,076 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,912 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,177 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,371 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,519 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,612 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,171 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,417 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,322 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,955 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,596 |
| One Border Countries | 0 | - | 4.98 | 464,340 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,824 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,726 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,634 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,831 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,904 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,875 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,474 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,591 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,257 |
| Countries by National Anthem | 0 | - | 4.92 | 71,023 |
| NATO Countries | 0 | - | 4.98 | 275,710 |
| EU Countries Quiz | 0 | - | 4.99 | 269,896 |
| Recently Independent Countries | 0 | - | 4.98 | 157,980 |
| French-Speaking Countries | 0 | - | 4.85 | 268,791 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,375 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,972 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,908 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,273 |
| German-Speaking Countries | 0 | - | 4.89 | 123,503 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,602 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,307 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,145 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,030 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,097 |
