| Countries With No Rivers | 0 | - | 4.96 | 76,148 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,465 |
| Countries with Fjords | 0 | - | 4.93 | 100,378 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,941 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,370 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,160 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,848 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,390 |
| Megadiverse Countries | 0 | - | 4.96 | 134,484 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,798 |
| North Sea Countries | 0 | - | 4.92 | 86,717 |
| Black Sea Countries | 0 | - | 4.87 | 60,393 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,105 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,183 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,008 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,028 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,599,009 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,401 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,704 |
| African Great Lakes | 0 | - | 4.82 | 65,550 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,075 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,938 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,569 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,635 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,086,291 |
| Landlocked Countries | 0 | - | 4.99 | 415,694 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,373 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,733,575 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,670 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,443 |
| Himalayan Countries | 0 | - | 4.95 | 136,096 |
| Andean Countries | 0 | - | 4.95 | 83,230 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,550 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,719 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,236 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,876 |
| Danube Countries | 0 | - | 4.97 | 71,291 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,050 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,746 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,942 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,887 |
| European Landlocked Countries | 0 | - | 4.99 | 146,001 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,590 |
| Countries with the Most Species | 0 | - | 4.99 | 95,366 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,721 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,282 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,451 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,089 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,739 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,111 |
| Countries in the Alps | 0 | - | 4.86 | 117,168 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,795 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,665 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,178 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,621 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,425 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,172 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,853 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,919 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,718 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,243 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,289 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,157 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,646 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,909 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,920 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,538 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,820 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,364 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,094 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,460 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,306 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,749 |
| Largest Countries By Category | 0 | - | 4.97 | 157,095 |
| Countries by Countries | 0 | - | 4.96 | 62,475 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,736 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,044 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,390 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,994 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,795 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,358 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,068 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,789 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,572 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,110 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,087 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,974 |
| Island Countries | 0 | - | 4.99 | 708,461 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,005 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,185 |
| Northernmost Countries | 0 | - | 4.99 | 358,885 |
| Countries of South America | 0 | - | 5.00 | 918,352 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,936 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,542 |
| "Land" Countries | 0 | - | 4.98 | 334,183 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 380,018 |
| Biggest City by River | 0 | - | 4.41 | 52,733 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,380 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,002 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 135,857 |
| Landforms by Country | 0 | - | 4.52 | 51,931 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,957 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,747 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,467 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,503 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,001 |
| Countries with Megacities | 0 | - | 4.99 | 248,417 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,898 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,405 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,281 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,346 |
| Capitals by River | 0 | - | 4.55 | 48,260 |
| Countries by Official Language | 0 | - | 4.95 | 193,411 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,942 |
| Countries in their Native Language | 0 | - | 4.99 | 197,175 |
| Independence from Whom | 0 | - | 4.99 | 210,258 |
| Subdivisions by Country | 0 | - | 4.86 | 50,157 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,140 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,351 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,033 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,566 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,923 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,924 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,151 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,407 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,476 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,319 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,790 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,002 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,536 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,642 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,609 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,814 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,139 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,234 |
| World Map Quiz | 0 | - | 4.81 | 63,879 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,885 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,628 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,856 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,570 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,290 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,454 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,156 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,356 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,543 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,100 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,563 |
| Widest Countries East to West | 0 | - | 4.92 | 129,058 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,298 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,538 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,666 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,892 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,877 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,268 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,872 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,652 |
| Countries with Double Letters | 0 | - | 4.96 | 93,757 |
| Countries that End in N | 0 | - | 4.94 | 157,193 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,125 |
| Countries with Six Letters | 0 | - | 4.93 | 210,785 |
| Countries with W | 0 | - | 4.97 | 158,469 |
| Countries with Z | 0 | - | 4.98 | 288,335 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,815 |
| Countries That End in U | 0 | - | 4.95 | 119,636 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,940 |
| Countries that End in O | 0 | - | 4.92 | 158,677 |
| Countries that End in R | 0 | - | 4.87 | 118,396 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,947 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,491 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,595 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,693 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,250 |
| Countries That End in Y | 0 | - | 4.90 | 185,305 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,671 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,953 |
| Countries that End in I | 0 | - | 4.94 | 134,569 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,541 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,334 |
| Countries That End in NIA | 0 | - | 4.92 | 109,164 |
| Countries That End in BIA | 0 | - | 4.92 | 148,021 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,309 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,673 |
| Countries That End in RIA | 0 | - | 4.93 | 126,225 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,213 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,833 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,731 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,080 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,637 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,054 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,323 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,835 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,736 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,919 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,394 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,049 |
| Countries that End in L | 0 | - | 4.94 | 156,183 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,358 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,028 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,655 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,490 |
