| City to Country Quiz #3 | 0 | - | 4.88 | 118,899 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,932 |
| Landlocked Countries | 0 | - | 4.99 | 421,283 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,527,709 |
| Historical City to Country | 0 | - | 4.84 | 78,598 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,115 |
| Himalayan Countries | 0 | - | 4.95 | 138,411 |
| Andean Countries | 0 | - | 4.93 | 84,430 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,644 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,591 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,274 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,674 |
| Danube Countries | 0 | - | 4.97 | 71,927 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,912 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,341 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,154 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,612 |
| European Landlocked Countries | 0 | - | 4.99 | 147,057 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,506 |
| Countries with the Most Species | 0 | - | 4.99 | 103,167 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,658 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,546 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,689 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,493 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,172 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,584 |
| Countries in the Alps | 0 | - | 4.87 | 118,089 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,602 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,900 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,602 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,528 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,415 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,891 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,576 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,433 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,134 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,780 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,611 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,470 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,153 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,407 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,446 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,724 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,241 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 61,236 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,941 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,575 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,900 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,165 |
| Largest Countries By Category | 0 | - | 4.97 | 158,083 |
| Countries by Countries | 0 | - | 4.96 | 63,115 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,589 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,252 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,540 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,600 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,518 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,008 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,316 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,785 |
| Island Countries | 0 | - | 4.99 | 710,776 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,953 |
| Northernmost Countries | 0 | - | 4.99 | 361,646 |
| Countries of South America | 0 | - | 5.00 | 926,278 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,530 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,956 |
| "Land" Countries | 0 | - | 4.98 | 337,114 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,451 |
| City to Country Quiz #4 | 0 | - | 4.56 | 84,181 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,071 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,522 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,903 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,717 |
| Countries with Megacities | 0 | - | 4.99 | 264,130 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,560 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,381 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,824 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,436 |
| Countries by Official Language | 0 | - | 4.95 | 195,108 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,182 |
| Countries in their Native Language | 0 | - | 4.99 | 198,880 |
| Independence from Whom | 0 | - | 4.99 | 211,924 |
| Subdivisions by Country | 0 | - | 4.86 | 50,397 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,609 |
| Megadiverse Countries | 0 | - | 4.96 | 134,951 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,956 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,307 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,884 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,085 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,021 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,556 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,364 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,990 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,607 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,057 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,535 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,838 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,157 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,925 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,309 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,456 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,983 |
| World Map Quiz | 0 | - | 4.81 | 64,992 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,899 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,281 |
| Countries by Founding Story | 0 | - | 4.95 | 77,304 |
| Countries by Road Signs | 0 | - | 4.98 | 53,937 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,959 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,194 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,916 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,023 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,817 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,942 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,246 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,401 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,520 |
| Widest Countries East to West | 0 | - | 4.92 | 129,579 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,434 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,298 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,096 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,720 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,516 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,787 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,343 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,786 |
| Countries with Double Letters | 0 | - | 4.96 | 96,042 |
| Countries that End in N | 0 | - | 4.95 | 170,930 |
| Countries with Five Letters | 0 | - | 4.96 | 282,109 |
| Countries with Six Letters | 0 | - | 4.94 | 213,356 |
| Countries with W | 0 | - | 4.97 | 160,177 |
| Countries with Z | 0 | - | 4.98 | 291,233 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,544 |
| Countries That End in U | 0 | - | 4.95 | 120,764 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,311 |
| Countries that End in O | 0 | - | 4.92 | 159,453 |
| Countries that End in R | 0 | - | 4.87 | 118,918 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,680 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,919 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,594 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,400 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,314 |
| Countries That End in Y | 0 | - | 4.91 | 185,828 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,793 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,755 |
| Countries that End in I | 0 | - | 4.94 | 135,044 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,965 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,767 |
| Countries That End in NIA | 0 | - | 4.92 | 109,718 |
| Countries That End in BIA | 0 | - | 4.93 | 149,121 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,015 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,350 |
| Countries That End in RIA | 0 | - | 4.93 | 126,760 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,939 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,387 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,580 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,972 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,548 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,530 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,943 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,424 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,449 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,374 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,188 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,883 |
| Countries that End in L | 0 | - | 4.94 | 156,761 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,348 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,241 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,611 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,558 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,913 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,444 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,321 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,808 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,059 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,683 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,826 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,047 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,696 |
| One Border Countries | 0 | - | 4.98 | 469,453 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,425 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,014 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,832,105 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,339 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,824 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,026 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,017 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,492 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,641 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,159 |
| Countries by National Anthem | 0 | - | 4.93 | 71,267 |
| NATO Countries | 0 | - | 4.98 | 281,049 |
| EU Countries Quiz | 0 | - | 4.99 | 274,959 |
| Recently Independent Countries | 0 | - | 4.98 | 159,377 |
| French-Speaking Countries | 0 | - | 4.85 | 270,715 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,868 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,296 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,918 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,887 |
| German-Speaking Countries | 0 | - | 4.91 | 145,661 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,913 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,240 |
