| Countries With No Rivers | 0 | - | 4.96 | 76,144 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,460 |
| Countries with Fjords | 0 | - | 4.93 | 100,372 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,794 |
| North Sea Countries | 0 | - | 4.92 | 86,713 |
| Black Sea Countries | 0 | - | 4.87 | 60,389 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,102 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,178 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,005 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,900 |
| Megadiverse Countries | 0 | - | 4.96 | 134,478 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,931 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,362 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,927 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,566 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,628 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,155 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,080,416 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,538 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,372 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,660 |
| Landlocked Countries | 0 | - | 4.99 | 415,623 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,732,962 |
| Countries that Start with A | 0 | - | 4.98 | 2,151,587 |
| Countries that Start with B | 0 | - | 4.95 | 2,284,077 |
| Countries that Start with C | 0 | - | 4.96 | 1,813,696 |
| Countries that Start with D | 0 | - | 4.96 | 703,873 |
| Countries that Start with E | 0 | - | 4.95 | 1,370,276 |
| Countries that Start with G | 0 | - | 4.97 | 1,495,780 |
| Countries that Start with H | 0 | - | 4.96 | 599,859 |
| Countries that Start with I | 0 | - | 4.92 | 1,282,560 |
| Countries that Start with J | 0 | - | 4.98 | 597,903 |
| Countries that Start with K | 0 | - | 4.97 | 811,147 |
| Countries that Start with L | 0 | - | 4.98 | 1,085,086 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,995 |
| Countries that Start with P | 0 | - | 4.94 | 1,210,654 |
| Countries that Start with S | 0 | - | 4.98 | 1,747,497 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,840 |
| Countries that Start with U | 0 | - | 4.97 | 901,245 |
| Countries that Start with V | 0 | - | 4.98 | 606,256 |
| Countries that Start with F | 0 | - | 4.83 | 613,783 |
| Countries that Start with M | 0 | - | 4.97 | 1,375,749 |
| Rivers of the United States | 0 | - | 4.93 | 65,718 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,387 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,049 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,825 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,782 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,693 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 134,392 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,350 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,057 |
| Biggest City by River | 0 | - | 4.41 | 52,732 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,916 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,934 |
| Island Countries | 0 | - | 4.99 | 708,435 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,413 |
| Himalayan Countries | 0 | - | 4.95 | 136,065 |
| Andean Countries | 0 | - | 4.95 | 83,218 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,536 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,701 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,226 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,870 |
| Danube Countries | 0 | - | 4.97 | 71,286 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,040 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,738 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,921 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,865 |
| European Landlocked Countries | 0 | - | 4.99 | 145,996 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,573 |
| Countries with the Most Species | 0 | - | 4.99 | 95,360 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,700 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,278 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,448 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,082 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,735 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,100 |
| Countries in the Alps | 0 | - | 4.86 | 117,163 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,783 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,649 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,175 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,611 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,414 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,163 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,834 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,912 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,714 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,229 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,284 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,155 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,639 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,902 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,915 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,522 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,814 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,361 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,072 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,425 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,281 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,747 |
| Largest Countries By Category | 0 | - | 4.97 | 157,079 |
| Countries by Countries | 0 | - | 4.96 | 62,467 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,861 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,987 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,064 |
| Northernmost Countries | 0 | - | 4.99 | 358,840 |
| Landforms by Country | 0 | - | 4.52 | 51,931 |
| Countries of South America | 0 | - | 5.00 | 918,248 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,807 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,263 |
| "Land" Countries | 0 | - | 4.98 | 334,165 |
| African Great Lakes | 0 | - | 4.82 | 65,539 |
| Capitals by River | 0 | - | 4.55 | 48,258 |
| Rivers A-Z | 0 | - | 4.35 | 32,725 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,064 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,375 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,484 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,986 |
| Countries with Megacities | 0 | - | 4.99 | 248,369 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,878 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,397 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,268 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,331 |
| Countries by Official Language | 0 | - | 4.95 | 193,263 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,822 |
| Countries in their Native Language | 0 | - | 4.99 | 197,085 |
| Independence from Whom | 0 | - | 4.99 | 210,227 |
| Subdivisions by Country | 0 | - | 4.86 | 50,155 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,112 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,251 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,029 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,560 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,918 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,917 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,145 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,385 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,471 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,735 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,311 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,696 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,790 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,993 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,532 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,638 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,600 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,620 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,841 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,559 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,281 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,425 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,144 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,346 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,535 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,092 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,560 |
| Widest Countries East to West | 0 | - | 4.92 | 129,049 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,294 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,527 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,662 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,886 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,869 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,259 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,835 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,649 |
| Countries with Double Letters | 0 | - | 4.96 | 93,742 |
| Countries that End in N | 0 | - | 4.94 | 157,178 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,109 |
| Countries with Six Letters | 0 | - | 4.93 | 210,762 |
| Countries with W | 0 | - | 4.97 | 158,457 |
| Countries with Z | 0 | - | 4.98 | 288,311 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,804 |
| Countries That End in U | 0 | - | 4.95 | 119,627 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,928 |
| Countries that End in O | 0 | - | 4.92 | 158,675 |
| Countries that End in R | 0 | - | 4.87 | 118,392 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,947 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,470 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,590 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,689 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,240 |
| Countries That End in Y | 0 | - | 4.90 | 185,303 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,662 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,949 |
| Countries that End in I | 0 | - | 4.94 | 134,565 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,532 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,328 |
| Countries That End in NIA | 0 | - | 4.92 | 109,149 |
| Countries That End in BIA | 0 | - | 4.92 | 147,890 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,295 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,665 |
| Countries That End in RIA | 0 | - | 4.93 | 126,216 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,207 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,812 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,717 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,065 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,628 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,049 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,311 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,827 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,917 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,035 |
