| Countries With No Rivers | 0 | - | 4.96 | 76,620 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,725 |
| Countries with Fjords | 0 | - | 4.93 | 100,712 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,274 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,576 |
| African Great Lakes | 0 | - | 4.82 | 65,916 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,294 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,559 |
| Megadiverse Countries | 0 | - | 4.96 | 134,696 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,951 |
| North Sea Countries | 0 | - | 4.92 | 87,216 |
| Black Sea Countries | 0 | - | 4.87 | 60,552 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,272 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,379 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,147 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,369 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,655 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,231 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,161 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,749 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,799 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,469 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,262,439 |
| Landlocked Countries | 0 | - | 4.99 | 417,946 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,460 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,293 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,836 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,649 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,504 |
| Himalayan Countries | 0 | - | 4.94 | 136,999 |
| Andean Countries | 0 | - | 4.95 | 83,720 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,965 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,323 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,644 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,215 |
| Danube Countries | 0 | - | 4.97 | 71,557 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,400 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,969 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,462 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,515 |
| European Landlocked Countries | 0 | - | 4.99 | 146,605 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,985 |
| Countries with the Most Species | 0 | - | 4.99 | 102,692 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,122 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,385 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,553 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,242 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,907 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,291 |
| Countries in the Alps | 0 | - | 4.86 | 117,534 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,033 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,177 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,352 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,880 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,984 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,380 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,150 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,101 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,906 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,467 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,429 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,288 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,844 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,110 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,136 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,984 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,990 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,514 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,396 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,798 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,971 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,920 |
| Largest Countries By Category | 0 | - | 4.97 | 157,484 |
| Countries by Countries | 0 | - | 4.96 | 62,750 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,233 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,955 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,592 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,631 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,085 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,327 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,586 |
| Island Countries | 0 | - | 4.99 | 709,335 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,492 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,944 |
| Northernmost Countries | 0 | - | 4.99 | 360,023 |
| Countries of South America | 0 | - | 5.00 | 921,643 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,430 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,230 |
| "Land" Countries | 0 | - | 4.98 | 335,538 |
| Biggest City by River | 0 | - | 4.41 | 52,809 |
| Landforms by Country | 0 | - | 4.52 | 51,951 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,016 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,905 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,367 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,681 |
| Countries with Megacities | 0 | - | 4.99 | 249,783 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,518 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,787 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,850 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,773 |
| Capitals by River | 0 | - | 4.55 | 48,286 |
| Countries by Official Language | 0 | - | 4.95 | 194,452 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,278 |
| Countries in their Native Language | 0 | - | 4.99 | 198,011 |
| Independence from Whom | 0 | - | 4.99 | 211,122 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,557 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,149 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,145 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,700 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,988 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,595 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,312 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,823 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,745 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,445 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,917 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,641 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,658 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,868 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,726 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,038 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,278 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,923 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,922 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,306 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,822 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,544 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,066 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,426 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,600 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,747 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,212 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,208 |
| Widest Countries East to West | 0 | - | 4.92 | 129,272 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,363 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,831 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,966 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,444 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,117 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,465 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,191 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,885 |
| Countries that End in N | 0 | - | 4.95 | 169,450 |
| Countries with Five Letters | 0 | - | 4.96 | 278,195 |
| Countries with Six Letters | 0 | - | 4.94 | 212,224 |
| Countries with W | 0 | - | 4.97 | 159,359 |
| Countries with Z | 0 | - | 4.98 | 289,573 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,570 |
| Countries That End in U | 0 | - | 4.95 | 120,332 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,580 |
| Countries that End in O | 0 | - | 4.92 | 159,133 |
| Countries that End in R | 0 | - | 4.87 | 118,673 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,461 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,153 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,996 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,995 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,585 |
| Countries That End in Y | 0 | - | 4.90 | 185,591 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,086 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,303 |
| Countries that End in I | 0 | - | 4.94 | 134,812 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,928 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,524 |
| Countries That End in NIA | 0 | - | 4.92 | 109,443 |
| Countries That End in BIA | 0 | - | 4.93 | 148,744 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,612 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,962 |
| Countries That End in RIA | 0 | - | 4.93 | 126,455 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,547 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,442 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,088 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,430 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,003 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,262 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,589 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,142 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,034 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,146 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,409 |
| Countries that End in L | 0 | - | 4.94 | 156,466 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,606 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,136 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,786 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,659 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,708 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,566 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,002 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,514 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,977 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,451 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,438 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,910 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,335 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,569 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,598 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,818,907 |
| One Border Countries | 0 | - | 4.98 | 467,175 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,610,616 |
