| City to Country Quiz #1 | 0 | - | 4.97 | 155,513 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,296 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,429 |
| Historical City to Country | 0 | - | 4.84 | 78,132 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,923,162 |
| Landlocked Countries | 0 | - | 4.99 | 413,655 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,170 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,605 |
| Himalayan Countries | 0 | - | 4.95 | 135,374 |
| Andean Countries | 0 | - | 4.94 | 82,830 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,222 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,220 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,908 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,613 |
| Danube Countries | 0 | - | 4.97 | 71,083 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,769 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,539 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,492 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,408 |
| European Landlocked Countries | 0 | - | 4.99 | 145,758 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,218 |
| Countries with the Most Species | 0 | - | 4.99 | 95,242 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,352 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,958 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,826 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,569 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,259 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,014 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,426 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,168 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,004 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,582 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,760 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,303 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,062 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,196 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,045 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,454 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,752 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,755 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,071 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,649 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,254 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,774 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,319 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,681 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,605 |
| Largest Countries By Category | 0 | - | 4.97 | 156,763 |
| Countries by Countries | 0 | - | 4.96 | 62,257 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,389 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,332 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,688 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,102 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,772 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,001 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,132 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,869 |
| Island Countries | 0 | - | 4.99 | 707,638 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,490 |
| Northernmost Countries | 0 | - | 4.99 | 357,741 |
| Countries of South America | 0 | - | 5.00 | 914,844 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,544 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,501 |
| "Land" Countries | 0 | - | 4.98 | 333,665 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,426 |
| City to Country Quiz #2 | 0 | - | 4.79 | 108,103 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,903 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,779 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,270 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,249 |
| Countries with Megacities | 0 | - | 4.99 | 246,949 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,139 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,985 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,555 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,879 |
| Countries by Official Language | 0 | - | 4.95 | 192,777 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,143 |
| Countries in their Native Language | 0 | - | 4.99 | 196,643 |
| Independence from Whom | 0 | - | 4.99 | 209,698 |
| Subdivisions by Country | 0 | - | 4.86 | 50,068 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,759 |
| Megadiverse Countries | 0 | - | 4.97 | 133,906 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,920 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,429 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,862 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,664 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,000 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,026 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,149 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,215 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,746 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,576 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,422 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,496 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,505 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,677 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,030 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,602 |
| World Map Quiz | 0 | - | 4.81 | 63,495 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,689 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,333 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,123 |
| Countries by Founding Story | 0 | - | 4.95 | 76,544 |
| Countries by Road Signs | 0 | - | 4.98 | 53,100 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,360 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,993 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,955 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,780 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,858 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,064 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,279 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,949 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,338 |
| Widest Countries East to West | 0 | - | 4.92 | 128,606 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,217 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,569 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,691 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,634 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,047 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,583 |
| Countries with Double Letters | 0 | - | 4.97 | 93,395 |
| Countries that End in N | 0 | - | 4.94 | 156,886 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,691 |
| Countries with Six Letters | 0 | - | 4.93 | 210,371 |
| Countries with W | 0 | - | 4.97 | 158,233 |
| Countries with Z | 0 | - | 4.98 | 287,882 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,556 |
| Countries That End in U | 0 | - | 4.95 | 119,519 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,559 |
| Countries that End in O | 0 | - | 4.92 | 158,558 |
| Countries that End in R | 0 | - | 4.87 | 118,275 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,860 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,032 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,334 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,497 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,022 |
| Countries That End in Y | 0 | - | 4.90 | 185,206 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,377 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,692 |
| Countries that End in I | 0 | - | 4.94 | 134,413 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,202 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,194 |
| Countries That End in NIA | 0 | - | 4.92 | 109,011 |
| Countries That End in BIA | 0 | - | 4.92 | 147,720 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,065 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,487 |
| Countries That End in RIA | 0 | - | 4.93 | 126,084 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,011 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,202 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,524 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,890 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,360 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,928 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,123 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,648 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,512 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,815 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,145 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,815 |
| Countries that End in L | 0 | - | 4.94 | 155,733 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,208 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,988 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,993 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,105 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,916 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,190 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,383 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,530 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,617 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,173 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,422 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,331 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,145 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,659 |
| One Border Countries | 0 | - | 4.98 | 464,400 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,801,264 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,277 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,639 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,923 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,846 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,942 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,891 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,496 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,610 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,275 |
| Countries by National Anthem | 0 | - | 4.93 | 71,031 |
| NATO Countries | 0 | - | 4.98 | 275,778 |
| EU Countries Quiz | 0 | - | 4.99 | 269,963 |
| Recently Independent Countries | 0 | - | 4.98 | 157,989 |
| French-Speaking Countries | 0 | - | 4.85 | 268,812 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,379 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,010 |
