| Countries of the World Quiz | 0 | - | 5.00 | 44,918,194 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 108,398 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 390,425 |
| Countries with the Most HIV | 0 | - | 4.47 | 43,862 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 42,510 |
| Countries with Glaciers | 0 | - | 4.97 | 102,186 |
| Countries with the Most Forest | 0 | - | 4.88 | 143,855 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,452,738 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.88 | 62,241 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,528,659 |
| Sahara Desert Countries | 0 | - | 4.97 | 149,424 |
| Himalayan Countries | 0 | - | 4.94 | 125,548 |
| Andean Countries | 0 | - | 4.93 | 70,687 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 58,190 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 115,717 |
| Coffee Producing Countries | 0 | - | 4.83 | 61,565 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 60,673 |
| Danube Countries | 0 | - | 4.97 | 61,744 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 98,114 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 82,754 |
| Countries with the Worst Passports | 0 | - | 4.92 | 75,521 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 141,157 |
| European Landlocked Countries | 0 | - | 4.99 | 142,149 |
| Partially Recognized Countries | 0 | - | 4.98 | 99,944 |
| Countries with the Most Species | 0 | - | 4.99 | 93,188 |
| Countries 197 to 205 | 0 | - | 4.88 | 64,882 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 47,101 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,186 |
| Countries that Use the Peso | 0 | - | 4.89 | 57,070 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 70,592 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 54,509 |
| Countries in the Alps | 0 | - | 4.86 | 112,085 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 91,642 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 99,579 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,085 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 84,558 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 111,741 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 92,676 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 96,209 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 50,536 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 48,513 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 59,560 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 51,751 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 39,555 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,859 |
| Arctic Ocean Countries | 0 | - | 4.94 | 76,526 |
| Countries with the Most Grassland | 0 | - | 4.93 | 74,356 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 111,054 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 65,489 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 57,403 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 40,666 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 226,533 |
| World Countries - Blind Typing | 0 | - | 5.00 | 97,723 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,737 |
| Largest Countries By Category | 0 | - | 4.97 | 152,578 |
| Countries by Countries | 0 | - | 4.96 | 59,248 |
| Country Flags with the Most White | 0 | - | 4.85 | 133,315 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,967 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,555 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 84,882 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 363,014 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 386,830 |
| Island Countries Quiz | 0 | - | 4.99 | 695,507 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,006,589 |
| Northernmost Countries | 0 | - | 4.99 | 345,085 |
| Countries of South America | 0 | - | 5.00 | 875,098 |
| Countries of Oceania | 0 | - | 5.00 | 990,905 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,757,159 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,286,720 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 162,666 |
| Countries with Megacities | 0 | - | 4.99 | 222,276 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 189,560 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,675 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 128,883 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,076 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 301,789 |
| Countries by Official Language | 0 | - | 4.95 | 186,113 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 284,708 |
| Countries in their Native Language | 0 | - | 4.98 | 190,449 |
| Independence from Whom | 0 | - | 4.99 | 202,584 |
| Subdivisions by Country | 0 | - | 4.85 | 48,958 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 125,711 |
| Megadiverse Countries | 0 | - | 4.97 | 131,284 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 124,059 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 53,396 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 122,712 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 73,519 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,583 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 156,932 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,258 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 88,703 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,171 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,078 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,641 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 69,694 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,319 |
| Countries Furthest from the United States | 0 | - | 4.93 | 86,506 |
| Countries with the Highest HDI | 0 | - | 4.95 | 134,982 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 72,705 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,206 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 100,681 |
| World Map Quiz | 0 | - | 4.87 | 59,128 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 139,261 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 87,810 |
| Southernmost Countries of the World | 0 | - | 4.99 | 220,381 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 99,979 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 117,802 |
| Countries With the Most Languages | 0 | - | 4.89 | 191,976 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 97,605 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 89,612 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 94,804 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 59,006 |
| Tallest Countries North to South | 0 | - | 4.84 | 116,629 |
| Widest Countries East to West | 0 | - | 4.92 | 125,749 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,432 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 181,583 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,989 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 91,157 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 126,286 |
| Countries with the Most Desert | 0 | - | 4.93 | 124,135 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,292 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,825 |
| Countries with Double Letters | 0 | - | 4.97 | 85,941 |
| Countries that End in N | 0 | - | 4.94 | 149,449 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 249,947 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 203,556 |
| Countries with W | 0 | - | 4.97 | 152,566 |
| Countries with Z | 0 | - | 4.98 | 279,538 |
| Countries with Letters Missing | 0 | - | 4.97 | 179,170 |
| Countries That End in U | 0 | - | 4.95 | 116,198 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 103,173 |
| Countries that End in O | 0 | - | 4.92 | 155,803 |
| Countries that End in R | 0 | - | 4.84 | 100,855 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 152,744 |
| Countries Ending in "IA" | 0 | - | 4.99 | 200,549 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 165,423 |
| Countries by Last Two Letters | 0 | - | 4.88 | 131,598 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 137,492 |
| Countries That End in Y | 0 | - | 4.91 | 182,929 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 191,720 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 147,817 |
| Countries that End in I | 0 | - | 4.92 | 118,138 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 176,617 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 93,117 |
| Countries That End in NIA | 0 | - | 4.92 | 106,731 |
| Countries That End in BIA | 0 | - | 4.92 | 144,734 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 162,449 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 115,794 |
| Countries That End in RIA | 0 | - | 4.92 | 122,328 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 107,086 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 218,109 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 128,708 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 120,674 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 86,561 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 72,021 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 49,602 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 99,254 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 121,199 |
| Countries that are Free from U.S.A. | 0 | - | 4.88 | 47,036 |
| Countries with the Word "And" | 0 | - | 4.98 | 91,167 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 49,186 |
| Countries that End in L | 0 | - | 4.94 | 153,031 |
| "Land" Countries | 0 | - | 4.98 | 301,312 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 199,042 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,264 |
| City to Country Quiz #1 | 0 | - | 4.96 | 151,447 |
| City to Country Quiz #3 | 0 | - | 4.87 | 105,509 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 76,228 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 221,841 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 194,389 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 123,286 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 158,335 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 218,115 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 148,287 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 69,324 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 106,371 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.94 | 85,217 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 60,318 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,393,591 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,346 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,667,635 |
| One Border Countries | 0 | - | 4.98 | 448,388 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 82,840 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 259,421 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,150 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 108,539 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 89,306 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 55,728 |
| Majority Muslim Countries | 0 | - | 4.98 | 352,778 |
| Countries by National Anthem | 0 | - | 4.93 | 70,216 |
| NATO Countries Quiz | 0 | - | 4.98 | 260,434 |
| EU Countries Quiz | 0 | - | 4.99 | 257,058 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 153,540 |
| French-Speaking Countries | 0 | - | 4.85 | 261,788 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 81,646 |
| Countries That Use the Euro | 0 | - | 4.94 | 81,912 |
| Countries with the Most Military Troops | 0 | - | 4.96 | 271,131 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 251,603 |
| German-Speaking Countries | 0 | - | 4.89 | 121,713 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,037,496 |
