| City to Country Quiz #1 | 0 | - | 4.97 | 155,505 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,285 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,419 |
| Landlocked Countries | 0 | - | 4.99 | 413,502 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,911,135 |
| Historical City to Country | 0 | - | 4.84 | 78,122 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,543 |
| Himalayan Countries | 0 | - | 4.95 | 135,321 |
| Andean Countries | 0 | - | 4.94 | 82,805 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,203 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,171 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,879 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,585 |
| Danube Countries | 0 | - | 4.97 | 71,068 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,526 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,448 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,370 |
| European Landlocked Countries | 0 | - | 4.99 | 145,742 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,186 |
| Countries with the Most Species | 0 | - | 4.99 | 95,235 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,321 |
| 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 | 72,569 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,943 |
| Countries in the Alps | 0 | - | 4.86 | 116,803 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,549 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,240 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,996 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,409 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,146 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,992 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,559 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,743 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,231 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,040 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,193 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,038 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,445 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,731 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,743 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,038 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,630 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,252 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,759 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,228 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,649 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,597 |
| Largest Countries By Category | 0 | - | 4.97 | 156,742 |
| Countries by Countries | 0 | - | 4.96 | 62,248 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,366 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,959 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,329 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,757 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,757 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,769 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,085 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,793 |
| Island Countries | 0 | - | 4.99 | 707,576 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,329 |
| Northernmost Countries | 0 | - | 4.99 | 357,670 |
| Countries of South America | 0 | - | 5.00 | 914,534 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,231 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,990 |
| "Land" Countries | 0 | - | 4.98 | 333,620 |
| City to Country Quiz #2 | 0 | - | 4.79 | 108,095 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,897 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,771 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,262 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,027 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,133 |
| Countries with Megacities | 0 | - | 4.99 | 246,788 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,053 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,931 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,478 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,820 |
| Countries by Official Language | 0 | - | 4.95 | 192,751 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,093 |
| Countries in their Native Language | 0 | - | 4.99 | 196,616 |
| Independence from Whom | 0 | - | 4.99 | 209,660 |
| Subdivisions by Country | 0 | - | 4.86 | 50,063 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,726 |
| Megadiverse Countries | 0 | - | 4.97 | 133,890 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,779 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,916 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,425 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,856 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,641 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,990 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,921 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,135 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,209 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,551 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,408 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,484 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,493 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,661 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,018 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,550 |
| World Map Quiz | 0 | - | 4.81 | 63,491 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,617 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,318 |
| Countries by Founding Story | 0 | - | 4.95 | 76,523 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,328 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,977 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,936 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,721 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,843 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,052 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,266 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,940 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,330 |
| Widest Countries East to West | 0 | - | 4.92 | 128,596 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,195 |
| 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 | 93,681 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,620 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,031 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,050 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,577 |
| Countries with Double Letters | 0 | - | 4.97 | 93,368 |
| Countries that End in N | 0 | - | 4.94 | 156,706 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,666 |
| Countries with Six Letters | 0 | - | 4.93 | 210,335 |
| Countries with W | 0 | - | 4.97 | 158,212 |
| Countries with Z | 0 | - | 4.98 | 287,848 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,534 |
| Countries That End in U | 0 | - | 4.95 | 119,511 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,523 |
| Countries that End in O | 0 | - | 4.92 | 158,545 |
| Countries that End in R | 0 | - | 4.87 | 118,267 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,855 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,994 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,309 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,481 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,999 |
| Countries That End in Y | 0 | - | 4.90 | 185,196 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,353 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,669 |
| Countries that End in I | 0 | - | 4.94 | 134,404 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,177 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,187 |
| Countries That End in NIA | 0 | - | 4.92 | 109,000 |
| Countries That End in BIA | 0 | - | 4.92 | 147,705 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,048 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,475 |
| Countries That End in RIA | 0 | - | 4.93 | 126,069 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,994 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,165 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,511 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,883 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,345 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,924 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,108 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,636 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,496 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,810 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,119 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,801 |
| Countries that End in L | 0 | - | 4.94 | 155,714 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,135 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,985 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,883 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,072 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,908 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,171 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,363 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,515 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,609 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,168 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,417 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,313 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,899 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,584 |
| One Border Countries | 0 | - | 4.98 | 464,321 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.51 | 22,921 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,663 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,434 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,824 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,890 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,873 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,466 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,585 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,252 |
| Countries by National Anthem | 0 | - | 4.92 | 71,020 |
| NATO Countries | 0 | - | 4.98 | 275,683 |
| EU Countries Quiz | 0 | - | 4.99 | 269,884 |
| Recently Independent Countries | 0 | - | 4.98 | 157,977 |
| French-Speaking Countries | 0 | - | 4.85 | 268,778 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,372 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,961 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,894 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,245 |
| German-Speaking Countries | 0 | - | 4.89 | 123,502 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,596 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,305 |
