| City to Country Quiz #3 | 0 | - | 4.88 | 118,448 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,523 |
| Landlocked Countries | 0 | - | 4.99 | 415,272 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,048,772 |
| Historical City to Country | 0 | - | 4.84 | 78,233 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,255 |
| Himalayan Countries | 0 | - | 4.95 | 135,946 |
| Andean Countries | 0 | - | 4.94 | 83,157 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,473 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,607 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,175 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,822 |
| Danube Countries | 0 | - | 4.97 | 71,254 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,986 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,705 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,843 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,778 |
| European Landlocked Countries | 0 | - | 4.99 | 145,953 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,502 |
| Countries with the Most Species | 0 | - | 4.99 | 95,335 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,631 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,267 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,439 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,061 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,711 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,066 |
| Countries in the Alps | 0 | - | 4.86 | 117,108 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,749 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,571 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,153 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,574 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,368 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,131 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,785 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,890 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,680 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,202 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,270 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,137 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,610 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,874 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,885 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,442 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,791 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,348 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,011 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,208 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,166 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,719 |
| Largest Countries By Category | 0 | - | 4.97 | 157,010 |
| Countries by Countries | 0 | - | 4.96 | 62,432 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,652 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,020 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,376 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,928 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,729,975 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,732 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,756 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,721 |
| Island Countries | 0 | - | 4.99 | 708,289 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,585 |
| Northernmost Countries | 0 | - | 4.99 | 358,643 |
| Countries of South America | 0 | - | 5.00 | 917,644 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,981 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,986 |
| "Land" Countries | 0 | - | 4.98 | 334,078 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,185 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,972 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,829 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,333 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,775 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,877 |
| Countries with Megacities | 0 | - | 4.99 | 248,117 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,759 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,337 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,143 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,282 |
| Countries by Official Language | 0 | - | 4.95 | 193,156 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,669 |
| Countries in their Native Language | 0 | - | 4.99 | 196,991 |
| Independence from Whom | 0 | - | 4.99 | 210,125 |
| Subdivisions by Country | 0 | - | 4.86 | 50,143 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,044 |
| Megadiverse Countries | 0 | - | 4.97 | 134,375 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,149 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,006 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,535 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,903 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,874 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,119 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,317 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,431 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,297 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,785 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,900 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,513 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,617 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,580 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,791 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,118 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,107 |
| World Map Quiz | 0 | - | 4.81 | 63,776 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,599 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,575 |
| Countries by Founding Story | 0 | - | 4.95 | 76,708 |
| Countries by Road Signs | 0 | - | 4.98 | 53,270 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,767 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,509 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,226 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,292 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,104 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,304 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,491 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,073 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,522 |
| Widest Countries East to West | 0 | - | 4.92 | 129,018 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,283 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,474 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,647 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,859 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,815 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,220 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,590 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,639 |
| Countries with Double Letters | 0 | - | 4.96 | 93,672 |
| Countries that End in N | 0 | - | 4.94 | 157,135 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,021 |
| Countries with Six Letters | 0 | - | 4.93 | 210,680 |
| Countries with W | 0 | - | 4.97 | 158,417 |
| Countries with Z | 0 | - | 4.98 | 288,229 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,750 |
| Countries That End in U | 0 | - | 4.95 | 119,611 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,865 |
| Countries that End in O | 0 | - | 4.92 | 158,656 |
| Countries that End in R | 0 | - | 4.87 | 118,375 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,933 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,402 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,552 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,643 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,197 |
| Countries That End in Y | 0 | - | 4.90 | 185,284 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,615 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,892 |
| Countries that End in I | 0 | - | 4.94 | 134,540 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,465 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,298 |
| Countries That End in NIA | 0 | - | 4.92 | 109,116 |
| Countries That End in BIA | 0 | - | 4.92 | 147,847 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,251 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,634 |
| Countries That End in RIA | 0 | - | 4.93 | 126,197 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,181 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,706 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,682 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,030 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,581 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,026 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,280 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,795 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,679 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,895 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,340 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,987 |
| Countries that End in L | 0 | - | 4.94 | 156,153 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,110 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,021 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,964 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,620 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,674 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,644 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,020 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,916 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,813 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,243 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,465 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,417 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,753 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,328 |
| One Border Countries | 0 | - | 4.98 | 465,613 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,931 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,807,698 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,596,392 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,146 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,532 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,145 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,622 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,942 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,511 |
| Countries by National Anthem | 0 | - | 4.93 | 71,072 |
| NATO Countries | 0 | - | 4.98 | 277,202 |
| EU Countries Quiz | 0 | - | 4.99 | 270,883 |
| Recently Independent Countries | 0 | - | 4.98 | 158,198 |
| French-Speaking Countries | 0 | - | 4.85 | 269,267 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,447 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,533 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,705 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,424 |
| German-Speaking Countries | 0 | - | 4.89 | 123,609 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,879 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,527 |
