| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,719 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,443 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,611 |
| Landlocked Countries | 0 | - | 4.99 | 412,986 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,863,208 |
| Five Closest Countries by Country #3 | 0 | - | 4.97 | 120,673 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,818 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,418 |
| Countries Closest to an Unknown Country A-Z #1 | 0 | - | 4.92 | 79,382 |
| Countries Closest to an Unknown Country A-Z #2 | 0 | - | 4.97 | 72,608 |
| Countries Closest to an Unknown Country A-Z #3 | 0 | - | 4.91 | 61,126 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,311 |
| Himalayan Countries | 0 | - | 4.95 | 135,108 |
| Andean Countries | 0 | - | 4.94 | 82,692 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,104 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,028 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,790 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,497 |
| Danube Countries | 0 | - | 4.97 | 71,012 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,662 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,469 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,323 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,236 |
| European Landlocked Countries | 0 | - | 4.99 | 145,682 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,074 |
| Countries with the Most Species | 0 | - | 4.99 | 95,200 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,229 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,179 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,337 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,914 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,527 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,888 |
| Countries in the Alps | 0 | - | 4.87 | 116,710 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,491 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,113 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,955 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,339 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,077 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,943 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,486 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,696 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,415 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,984 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,169 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,004 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,386 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,692 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,689 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,911 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,581 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,209 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,693 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,905 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,411 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,552 |
| Largest Countries By Category | 0 | - | 4.97 | 156,649 |
| Countries by Countries | 0 | - | 4.96 | 62,185 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,250 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,937 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,308 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,441 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,024 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,674 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,837 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,463 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,169 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,876 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,072 |
| Island Countries | 0 | - | 4.99 | 707,308 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,549 |
| Northernmost Countries | 0 | - | 4.99 | 357,334 |
| Countries of South America | 0 | - | 5.00 | 913,617 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,944 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,665 |
| "Land" Countries | 0 | - | 4.98 | 333,461 |
| Countries With the Most Neighbors | 0 | - | 4.45 | 90,278 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,428 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,896 |
| Countries with Megacities | 0 | - | 4.99 | 246,281 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,820 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,750 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,276 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,689 |
| Countries by Official Language | 0 | - | 4.95 | 192,612 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,924 |
| Countries in their Native Language | 0 | - | 4.99 | 196,500 |
| Independence from Whom | 0 | - | 4.99 | 209,514 |
| Subdivisions by Country | 0 | - | 4.86 | 50,036 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,600 |
| Megadiverse Countries | 0 | - | 4.97 | 133,839 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,671 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,883 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,841 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,565 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,945 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,611 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,073 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,185 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,422 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,373 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,459 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,986 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,384 |
| World Map Quiz | 0 | - | 4.81 | 63,388 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,297 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,235 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,025 |
| Countries by Founding Story | 0 | - | 4.95 | 76,460 |
| Countries by Road Signs | 0 | - | 4.98 | 53,005 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,190 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,895 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,866 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,544 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,786 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,984 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,189 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,888 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,275 |
| Widest Countries East to West | 0 | - | 4.92 | 128,538 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,195 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,102 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,528 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,634 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,530 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,963 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,034 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,553 |
| Countries with Double Letters | 0 | - | 4.97 | 93,248 |
| Countries that End in N | 0 | - | 4.94 | 156,311 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,521 |
| Countries with Six Letters | 0 | - | 4.93 | 210,216 |
| Countries with W | 0 | - | 4.97 | 158,121 |
| Countries with Z | 0 | - | 4.98 | 287,595 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,446 |
| Countries That End in U | 0 | - | 4.95 | 119,458 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,381 |
| Countries that End in O | 0 | - | 4.92 | 158,491 |
| Countries that End in R | 0 | - | 4.86 | 118,213 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,816 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,890 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,198 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,400 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,583 |
| Countries That End in Y | 0 | - | 4.90 | 185,161 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,201 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,570 |
| Countries that End in I | 0 | - | 4.94 | 134,325 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,044 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,151 |
| Countries That End in NIA | 0 | - | 4.92 | 108,941 |
| Countries That End in BIA | 0 | - | 4.92 | 147,625 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,993 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,423 |
| Countries That End in RIA | 0 | - | 4.93 | 126,023 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,930 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,012 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,451 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,833 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,274 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,877 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,047 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,568 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,417 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,775 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,029 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,709 |
| Countries that End in L | 0 | - | 4.94 | 155,653 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,762 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,967 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,470 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,234 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,373 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,365 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,972 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,843 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,078 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,269 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,452 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,574 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,149 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,393 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,265 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,765 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,232 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,022 |
| One Border Countries | 0 | - | 4.98 | 463,680 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,592 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,067 |
| Countries Closest to the Equator A-Z | 0 | - | 4.53 | 38,908 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,302 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,740 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,734 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,776 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,410 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,505 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,169 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,196 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,805 |
| Countries by National Anthem | 0 | - | 4.92 | 71,000 |
