| Countries with Double Letters | 0 | - | 4.96 | 79,801 |
| Countries that End in N | 0 | - | 4.93 | 144,056 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 242,864 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,254 |
| Countries with W | 0 | - | 4.97 | 131,754 |
| Countries with Z | 0 | - | 4.98 | 273,344 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,060 |
| Countries That End in U | 0 | - | 4.95 | 113,161 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,542 |
| Countries that End in O | 0 | - | 4.92 | 152,868 |
| Countries that End in R | 0 | - | 4.84 | 99,360 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 150,995 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,093 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,166 |
| Countries by Last Two Letters | 0 | - | 4.89 | 120,944 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,460 |
| Countries That End in Y | 0 | - | 4.91 | 181,123 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,574 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,414 |
| Countries that End in I | 0 | - | 4.92 | 116,941 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,042 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,436 |
| Countries That End in NIA | 0 | - | 4.92 | 104,446 |
| Countries That End in BIA | 0 | - | 4.92 | 141,470 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 159,975 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,875 |
| Countries That End in RIA | 0 | - | 4.89 | 104,795 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 104,945 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 212,768 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 125,943 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,607 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,617 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 70,635 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,758 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,822 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 118,947 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,658 |
| Countries with the Word "And" | 0 | - | 4.98 | 88,783 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,536 |
| Countries that End in L | 0 | - | 4.94 | 150,904 |
| "Land" Countries | 0 | - | 4.98 | 298,278 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,654 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,706 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 373,367 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,616,364 |
| Countries with Four Letters | 0 | - | 4.99 | 384,771 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,253 |
| Himalayan Countries | 0 | - | 4.95 | 118,414 |
| Andean Countries | 0 | - | 4.92 | 66,307 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,396 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,014 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,206 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,071 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,766 |
| Danube Countries | 0 | - | 4.97 | 59,804 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,475 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,864 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,140 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,277 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,212 |
| European Landlocked Countries | 0 | - | 4.99 | 139,748 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,229 |
| Countries with the Most Species | 0 | - | 4.99 | 91,659 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,724 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,266 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,396 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,694 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,857 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,296 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,716 |
| Countries in the Alps | 0 | - | 4.86 | 108,570 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,635 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,747 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,582 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,497 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,384 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,062 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 93,920 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,018 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,348 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 57,912 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,080 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,690 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,552 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,319 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,038 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,663 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 106,890 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,105 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,038 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 217,725 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,554 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,394 |
| Largest Countries By Category | 0 | - | 4.97 | 149,954 |
| Countries by Countries | 0 | - | 4.96 | 57,708 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,332,672 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,142 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,310 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,008 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,802 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,405,537 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 120,751 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 196,115 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 356,620 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,490 |
| Island Countries Quiz | 0 | - | 4.99 | 685,316 |
| Biggest Countries by Area | 0 | - | 5.00 | 979,101 |
| Northernmost Countries | 0 | - | 4.99 | 339,817 |
| Countries of South America | 0 | - | 5.00 | 848,063 |
| Countries of Oceania | 0 | - | 5.00 | 958,619 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,696,942 |
| Countries with J | 0 | - | 4.55 | 177,875 |
| Countries by Consonants | 0 | - | 4.43 | 75,574 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,224,418 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,149 |
| Countries with Megacities | 0 | - | 4.99 | 213,836 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,075 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,796 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,293 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,506 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 265,942 |
| Countries by Official Language | 0 | - | 4.95 | 181,921 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 278,883 |
| Countries in their Native Language | 0 | - | 4.98 | 186,878 |
| Independence from Whom | 0 | - | 4.99 | 197,329 |
| Subdivisions by Country | 0 | - | 4.86 | 48,132 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,806 |
| Megadiverse Countries | 0 | - | 4.96 | 129,782 |
| Countries With the Most English Speakers | 0 | - | 4.88 | 118,365 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,124 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,069 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 153,881 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,777 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,837 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,279 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,547 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,083 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,554 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,113 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,274 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,626 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,519 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,916 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,441 |
| World Map Quiz | 0 | - | 4.88 | 56,180 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 130,840 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,708 |
| Countries by Founding Story | 0 | - | 4.94 | 71,743 |
| Countries by Road Signs | 0 | - | 4.98 | 48,709 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,489 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,220 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,850 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,628 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,752 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,417 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,135 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,621 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,738 |
| Widest Countries East to West | 0 | - | 4.93 | 123,650 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,921 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,226 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,012 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,498 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 123,964 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,470 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,746 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,290 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,106 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,008 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,756 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,570 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,138 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,378 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,353 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,158 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,077 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,375 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,353 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,532 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,237 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,368,726 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,864 |
| One Border Countries | 0 | - | 4.97 | 427,027 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 96,413 |
| Most Similar Country Names | 0 | - | 4.15 | 44,950 |
| Longest Country Name A-Z | 0 | - | 4.36 | 39,445 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,592,176 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 80,785 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,238 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,641 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 106,937 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 86,905 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,091 |
| Countries by National Anthem | 0 | - | 4.93 | 69,565 |
| NATO Countries Quiz | 0 | - | 4.98 | 255,003 |
| EU Countries Quiz | 0 | - | 4.99 | 243,750 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,701 |
| French-Speaking Countries | 0 | - | 4.84 | 253,308 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 80,096 |
| Countries That Use the Euro | 0 | - | 4.92 | 73,303 |
