| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,341,168 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,229,887 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,889 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,576 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 57,366 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,598,614 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 374,810 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,720,577 |
| Countries of the World in 1900 | 0 | - | 4.87 | 74,344 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 181,270 |
| All Countries by Northernmost Point on Land | 0 | - | 4.90 | 116,035 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.95 | 57,995 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 137,917 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,943 |
| Himalayan Countries | 0 | - | 4.95 | 118,973 |
| Andean Countries | 0 | - | 4.92 | 66,684 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 67,755 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,258 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,606 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,294 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,975 |
| Danube Countries | 0 | - | 4.97 | 59,945 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,661 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,992 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,517 |
| Countries with the Worst Passports | 0 | - | 4.92 | 61,211 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,771 |
| European Landlocked Countries | 0 | - | 4.99 | 139,887 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,519 |
| Countries with the Most Species | 0 | - | 4.99 | 91,767 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,975 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,332 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,452 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,838 |
| Countries that Use the Peso | 0 | - | 4.84 | 48,959 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,395 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,848 |
| Countries in the Alps | 0 | - | 4.86 | 109,064 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,803 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 96,030 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,724 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,635 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,617 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,179 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,094 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,127 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,435 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,057 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,185 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,767 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,639 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,437 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,138 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,787 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,231 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,210 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,148 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,396 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,911 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,487 |
| Largest Countries By Category | 0 | - | 4.97 | 150,133 |
| Countries by Countries | 0 | - | 4.96 | 57,803 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,343 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,381 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,052 |
| All Countries by Population With a Map | 0 | - | 4.98 | 90,711 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 82,119 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,964 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,416,359 |
| Pixelated World Map | 0 | - | 5.00 | 135,439 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 92,880 |
| Countries of the World in 1444 | 0 | - | 4.98 | 55,465 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.81 | 52,885 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 75,713 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 357,122 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 378,186 |
| Island Countries Quiz | 0 | - | 4.99 | 686,114 |
| Biggest Countries by Area | 0 | - | 5.00 | 980,706 |
| Northernmost Countries | 0 | - | 4.99 | 340,176 |
| Countries of South America | 0 | - | 5.00 | 850,606 |
| Countries of Oceania | 0 | - | 5.00 | 961,436 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,702,096 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,698 |
| Countries with Megacities | 0 | - | 4.99 | 214,744 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,435 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,040 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 105,594 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,786 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 266,482 |
| Global Cities on a World Map | 0 | - | 4.94 | 96,509 |
| Countries by Official Language | 0 | - | 4.95 | 182,291 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 279,579 |
| Countries in their Native Language | 0 | - | 4.98 | 187,228 |
| Independence from Whom | 0 | - | 4.99 | 197,670 |
| Subdivisions by Country | 0 | - | 4.86 | 48,203 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,054 |
| Megadiverse Countries | 0 | - | 4.96 | 129,924 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 120,252 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,204 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,112 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,123 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,881 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,040 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,392 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,626 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,122 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 65,097 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,199 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,372 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,733 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 71,620 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,000 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 100,538 |
| World Map Quiz | 0 | - | 4.88 | 56,383 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,879 |
| Countries by Founding Story | 0 | - | 4.94 | 71,864 |
| Countries by Road Signs | 0 | - | 4.98 | 48,839 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,748 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,536 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 115,048 |
| Countries With the Most Languages | 0 | - | 4.88 | 187,008 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,837 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,594 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,275 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,723 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,862 |
| Widest Countries East to West | 0 | - | 4.92 | 123,766 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,952 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,357 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,082 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,624 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,211 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,598 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,793 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,338 |
| Countries With the Tallest People | 0 | - | 4.91 | 92,112 |
| Countries with Double Letters | 0 | - | 4.96 | 80,274 |
| Countries that End in N | 0 | - | 4.93 | 144,413 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,351 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,632 |
| Countries with W | 0 | - | 4.97 | 132,038 |
| Countries with Z | 0 | - | 4.98 | 273,782 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,301 |
| Countries That End in U | 0 | - | 4.95 | 113,384 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,856 |
| Countries that End in O | 0 | - | 4.92 | 153,031 |
| Countries that End in R | 0 | - | 4.84 | 99,464 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,470 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,433 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,361 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,120 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,652 |
| Countries That End in Y | 0 | - | 4.91 | 181,235 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,856 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,617 |
| Countries that End in I | 0 | - | 4.92 | 117,034 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,272 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,558 |
| Countries That End in NIA | 0 | - | 4.92 | 104,582 |
| Countries That End in BIA | 0 | - | 4.92 | 141,639 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,140 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,030 |
| Countries That End in RIA | 0 | - | 4.89 | 104,900 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,123 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 213,183 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,160 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,855 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,865 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,911 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,991 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,131 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,784 |
| Countries with the Word "And" | 0 | - | 4.98 | 88,986 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,739 |
| Countries that End in L | 0 | - | 4.94 | 151,064 |
| "Land" Countries | 0 | - | 4.98 | 298,491 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,867 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,749 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,437 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,141 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,866 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,816 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,342 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,501 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,506 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,394 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,194 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,426 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,418 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,587 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,317 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 127,139 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.83 | 71,175 |
| Top World Languages on a Map | 0 | - | 4.92 | 96,888 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.98 | 106,785 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 42,834 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,370,760 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,239 |
| One Border Countries | 0 | - | 4.98 | 440,672 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.74 | 39,417 |
