| City to Country Quiz #1 | 0 | - | 4.97 | 155,537 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,332 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,449 |
| Landlocked Countries | 0 | - | 4.99 | 413,907 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,947,549 |
| Historical City to Country | 0 | - | 4.84 | 78,151 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,712 |
| Himalayan Countries | 0 | - | 4.95 | 135,470 |
| Andean Countries | 0 | - | 4.94 | 82,876 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,265 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,277 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,957 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,646 |
| Danube Countries | 0 | - | 4.97 | 71,107 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,802 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,568 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,548 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,461 |
| European Landlocked Countries | 0 | - | 4.99 | 145,788 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,253 |
| Countries with the Most Species | 0 | - | 4.99 | 95,258 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,396 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,206 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,379 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,974 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,594 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,973 |
| Countries in the Alps | 0 | - | 4.86 | 116,875 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,598 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,314 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,034 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,447 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,206 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,032 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,612 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,782 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,413 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,096 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,205 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,056 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,472 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,782 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,775 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,141 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,681 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,275 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,811 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,481 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,775 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,619 |
| Largest Countries By Category | 0 | - | 4.97 | 156,816 |
| Countries by Countries | 0 | - | 4.96 | 62,289 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,447 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,975 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,342 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,797 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,625 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,489 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,219 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,029 |
| Island Countries | 0 | - | 4.99 | 707,745 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,908 |
| Northernmost Countries | 0 | - | 4.99 | 357,908 |
| Countries of South America | 0 | - | 5.00 | 915,345 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,243 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,597 |
| "Land" Countries | 0 | - | 4.98 | 333,731 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,121 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,915 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,788 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,280 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,220 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,473 |
| Countries with Megacities | 0 | - | 4.99 | 247,311 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,309 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,106 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,737 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,036 |
| Countries by Official Language | 0 | - | 4.95 | 192,836 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,208 |
| Countries in their Native Language | 0 | - | 4.99 | 196,701 |
| Independence from Whom | 0 | - | 4.99 | 209,784 |
| Subdivisions by Country | 0 | - | 4.86 | 50,082 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,819 |
| Megadiverse Countries | 0 | - | 4.97 | 133,929 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,870 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,932 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,441 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,868 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,706 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,028 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,100 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,177 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,228 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,648 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,441 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,514 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,519 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,706 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,038 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,672 |
| World Map Quiz | 0 | - | 4.81 | 63,544 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,870 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,364 |
| Countries by Founding Story | 0 | - | 4.95 | 76,578 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,425 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,046 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,981 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,860 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,900 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,098 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,305 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,961 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,355 |
| Widest Countries East to West | 0 | - | 4.92 | 128,632 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,267 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,586 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,715 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,665 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,084 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,057 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,593 |
| Countries with Double Letters | 0 | - | 4.96 | 93,444 |
| Countries that End in N | 0 | - | 4.94 | 156,948 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,756 |
| Countries with Six Letters | 0 | - | 4.93 | 210,419 |
| Countries with W | 0 | - | 4.97 | 158,272 |
| Countries with Z | 0 | - | 4.98 | 287,950 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,597 |
| Countries That End in U | 0 | - | 4.95 | 119,540 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,638 |
| Countries that End in O | 0 | - | 4.92 | 158,578 |
| Countries that End in R | 0 | - | 4.87 | 118,291 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,870 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,146 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,377 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,526 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,066 |
| Countries That End in Y | 0 | - | 4.90 | 185,223 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,428 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,726 |
| Countries that End in I | 0 | - | 4.94 | 134,446 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,259 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,219 |
| Countries That End in NIA | 0 | - | 4.92 | 109,030 |
| Countries That End in BIA | 0 | - | 4.92 | 147,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,109 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,516 |
| Countries That End in RIA | 0 | - | 4.93 | 126,107 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,041 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,250 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,547 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,916 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,398 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,154 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,680 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,541 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,827 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,186 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,855 |
| Countries that End in L | 0 | - | 4.94 | 155,768 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,415 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,996 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,215 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,171 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 127,164 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,253 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,462 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,572 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,640 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,178 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,430 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,347 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,665 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,801 |
| One Border Countries | 0 | - | 4.98 | 464,649 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,926 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,426 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,557 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,897 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,062 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,957 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,524 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,674 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,345 |
| Countries by National Anthem | 0 | - | 4.93 | 71,039 |
| NATO Countries | 0 | - | 4.98 | 276,042 |
| EU Countries Quiz | 0 | - | 4.99 | 270,135 |
| Recently Independent Countries | 0 | - | 4.98 | 158,034 |
| French-Speaking Countries | 0 | - | 4.85 | 268,877 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,388 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,115 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,111 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,564 |
| German-Speaking Countries | 0 | - | 4.89 | 123,520 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,635 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,329 |
