| Countries With No Rivers | 0 | - | 4.96 | 76,000 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,348 |
| Countries with Fjords | 0 | - | 4.93 | 100,172 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,654 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,198 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,050 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,269 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,730 |
| North Sea Countries | 0 | - | 4.92 | 86,577 |
| Black Sea Countries | 0 | - | 4.87 | 60,313 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,995 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,088 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,935 |
| Megadiverse Countries | 0 | - | 4.97 | 133,851 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,076 |
| African Great Lakes | 0 | - | 4.82 | 65,073 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,562 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,278 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,768 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,386 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,876,616 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,326 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,355 |
| Monarchies Bordering Monarchies | 0 | - | 4.85 | 59,940 |
| Landlocked Countries | 0 | - | 4.99 | 413,135 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,129 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,190 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,438 |
| Countries with the Most Wolves | 0 | - | 4.92 | 106,981 |
| European Countries with One Border | 0 | - | 4.97 | 181,515 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,152 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,327 |
| Biggest City by River | 0 | - | 4.41 | 52,687 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,299 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,940 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,277 |
| Island Countries | 0 | - | 4.99 | 707,383 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,372 |
| Himalayan Countries | 0 | - | 4.95 | 135,155 |
| Andean Countries | 0 | - | 4.94 | 82,724 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,144 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,075 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,817 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,510 |
| Danube Countries | 0 | - | 4.97 | 71,028 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,692 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,485 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,355 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,277 |
| European Landlocked Countries | 0 | - | 4.99 | 145,697 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,106 |
| Countries with the Most Species | 0 | - | 4.99 | 95,215 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,256 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,187 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,348 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,926 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,538 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,896 |
| Countries in the Alps | 0 | - | 4.87 | 116,740 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,507 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,154 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,968 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,362 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,094 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,956 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,506 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,711 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,837 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,007 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,178 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,011 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,396 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,701 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,705 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,953 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,591 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,218 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,720 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,988 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,472 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,562 |
| Largest Countries By Category | 0 | - | 4.97 | 156,670 |
| Countries by Countries | 0 | - | 4.96 | 62,204 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,828 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,701 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,769 |
| Northernmost Countries | 0 | - | 4.99 | 357,426 |
| Landforms by Country | 0 | - | 4.52 | 51,911 |
| Countries of South America | 0 | - | 5.00 | 913,882 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,247 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,350 |
| "Land" Countries | 0 | - | 4.98 | 333,500 |
| Countries That Border Russia | 0 | - | 4.98 | 458,686 |
| Countries Bordering France | 0 | - | 4.85 | 397,879 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,840 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,884 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,859 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 153,182 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,430 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,007 |
| Countries by Bordering Flags #2 | 0 | - | 4.85 | 82,561 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,064 |
| Seas of Europe | 0 | - | 4.37 | 83,794 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,088 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,385 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,949 |
| Countries with Megacities | 0 | - | 4.99 | 246,393 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,864 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,774 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,321 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,725 |
| Capitals by River | 0 | - | 4.55 | 48,223 |
| Countries by Official Language | 0 | - | 4.95 | 192,657 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,969 |
| Countries in their Native Language | 0 | - | 4.99 | 196,525 |
| Independence from Whom | 0 | - | 4.99 | 209,552 |
| Subdivisions by Country | 0 | - | 4.86 | 50,041 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,635 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,699 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,894 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,392 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,846 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,580 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,958 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,637 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,093 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,193 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,726 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,453 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,383 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,455 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,470 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,796 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,121 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,635 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,997 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,260 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,223 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,919 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,881 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,584 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,804 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,000 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,209 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,905 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,286 |
| Widest Countries East to West | 0 | - | 4.92 | 128,553 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,200 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,137 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,536 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,647 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,555 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,973 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,037 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,275 |
| Countries that End in N | 0 | - | 4.94 | 156,339 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,552 |
| Countries with Six Letters | 0 | - | 4.93 | 210,250 |
| Countries with W | 0 | - | 4.97 | 158,153 |
| Countries with Z | 0 | - | 4.98 | 287,727 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,466 |
| Countries That End in U | 0 | - | 4.95 | 119,474 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,435 |
| Countries that End in O | 0 | - | 4.92 | 158,504 |
| Countries that End in R | 0 | - | 4.87 | 118,236 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,826 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,915 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,230 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,421 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,690 |
| Countries That End in Y | 0 | - | 4.90 | 185,172 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,240 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,592 |
| Countries that End in I | 0 | - | 4.94 | 134,355 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,083 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,161 |
| Countries That End in NIA | 0 | - | 4.92 | 108,953 |
| Countries That End in BIA | 0 | - | 4.92 | 147,643 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,005 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,432 |
| Countries That End in RIA | 0 | - | 4.93 | 126,038 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,951 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,064 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,471 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,851 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,292 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,890 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,058 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,586 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,787 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,735 |
| Countries that End in L | 0 | - | 4.94 | 155,670 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,881 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,973 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,481 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,254 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,390 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,521 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,998 |
