| Countries with Double Letters | 0 | - | 4.96 | 80,476 |
| Countries that End in N | 0 | - | 4.93 | 144,597 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,604 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,821 |
| Countries with W | 0 | - | 4.97 | 132,174 |
| Countries with Z | 0 | - | 4.98 | 274,031 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,424 |
| Countries That End in U | 0 | - | 4.95 | 113,473 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 99,001 |
| Countries that End in O | 0 | - | 4.92 | 153,104 |
| Countries that End in R | 0 | - | 4.84 | 99,515 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,651 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,493 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,229 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,909 |
| Countries That End in Y | 0 | - | 4.91 | 181,283 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 188,005 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,711 |
| Countries that End in I | 0 | - | 4.92 | 117,075 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,414 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,779 |
| Countries That End in NIA | 0 | - | 4.92 | 104,630 |
| Countries That End in BIA | 0 | - | 4.91 | 141,714 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,491 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,108 |
| Countries That End in RIA | 0 | - | 4.89 | 104,962 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,207 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 213,391 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,252 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,989 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,987 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,005 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 97,062 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,228 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,840 |
| Countries with the Word "And" | 0 | - | 4.98 | 89,085 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,870 |
| Countries that End in L | 0 | - | 4.94 | 151,140 |
| "Land" Countries | 0 | - | 4.98 | 298,630 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,980 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,768 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 100,627 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,602,125 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,782,177 |
| Countries of the World in 1900 | 0 | - | 4.88 | 74,513 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 181,489 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 138,072 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 116,683 |
| Countries with Four Letters | 0 | - | 4.99 | 385,359 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 375,629 |
| Pixelated World Map | 0 | - | 5.00 | 135,543 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,346,459 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 92,985 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.81 | 52,949 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,422,307 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 120,953 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 197,124 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 75,816 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 296,962 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 232,855 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 219,797 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 290,595 |
| Sahara Desert Countries | 0 | - | 4.98 | 142,332 |
| Himalayan Countries | 0 | - | 4.95 | 119,294 |
| Andean Countries | 0 | - | 4.92 | 66,909 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,401 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,867 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,481 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 58,124 |
| Danube Countries | 0 | - | 4.97 | 60,050 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,783 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,097 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,723 |
| Countries with the Worst Passports | 0 | - | 4.92 | 61,680 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 135,062 |
| European Landlocked Countries | 0 | - | 4.99 | 140,260 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,686 |
| Countries with the Most Species | 0 | - | 4.99 | 91,833 |
| Countries 197 to 205 | 0 | - | 4.87 | 62,134 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,368 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,488 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,896 |
| Countries that Use the Peso | 0 | - | 4.84 | 49,038 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,454 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,913 |
| Countries in the Alps | 0 | - | 4.86 | 109,274 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,915 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 96,202 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,810 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,728 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,748 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,253 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,190 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,214 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,487 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,130 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,234 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,808 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 38,692 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,512 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,216 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,865 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,396 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,275 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,204 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,784 |
| World Countries - Blind Typing | 0 | - | 5.00 | 83,111 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 44,543 |
| Largest Countries By Category | 0 | - | 4.97 | 150,250 |
| Countries by Countries | 0 | - | 4.96 | 57,864 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,462 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,403 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,085 |
| All Countries by Population With a Map | 0 | - | 4.98 | 91,031 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 82,196 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,055 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 357,438 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 378,750 |
| Island Countries Quiz | 0 | - | 4.99 | 686,571 |
| Biggest Countries by Area | 0 | - | 5.00 | 981,828 |
| Northernmost Countries | 0 | - | 4.99 | 340,576 |
| Countries of South America | 0 | - | 5.00 | 851,770 |
| Countries of Oceania | 0 | - | 5.00 | 962,936 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,705,008 |
| Megacities on an Empty Map | 0 | - | 4.95 | 92,360 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,233,321 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 64,772 |
| Official Country Names of the World | 0 | - | 4.50 | 20,058 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 111,622 |
| Countries with J | 0 | - | 4.55 | 178,104 |
| Add A Letter - Make a Country | 0 | - | 4.80 | 70,774 |
| Countries by Consonants | 0 | - | 4.43 | 75,725 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,322 |
| Countries with Megacities | 0 | - | 4.99 | 215,383 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,934 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,291 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 123,227 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,103 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,210 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 84,254 |
| Countries by Official Language | 0 | - | 4.95 | 182,499 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 279,864 |
| Countries in their Native Language | 0 | - | 4.98 | 187,400 |
| Independence from Whom | 0 | - | 4.99 | 197,875 |
| Subdivisions by Country | 0 | - | 4.86 | 48,235 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,189 |
| Megadiverse Countries | 0 | - | 4.96 | 129,984 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 120,537 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,258 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,143 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,230 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,926 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,154 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,443 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,676 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,142 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 65,351 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,234 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,423 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,779 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 71,677 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,047 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 96,657 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 96,168 |
| World Map Quiz | 0 | - | 4.88 | 56,562 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,980 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,959 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 57,461 |
| Countries by Founding Story | 0 | - | 4.94 | 71,933 |
| Countries by Road Signs | 0 | - | 4.98 | 48,921 |
| Southernmost Countries of the World | 0 | - | 4.99 | 217,032 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,788 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 115,279 |
| Countries With the Most Languages | 0 | - | 4.88 | 187,373 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,988 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,781 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,499 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,833 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,969 |
| Widest Countries East to West | 0 | - | 4.92 | 123,870 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,011 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,456 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,141 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,727 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,354 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,680 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,838 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,376 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,494 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,193 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,934 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,959 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,453 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,570 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,606 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,825 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,278 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,452 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,450 |
