| Countries With No Rivers | 0 | - | 4.96 | 75,996 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,344 |
| Countries with Fjords | 0 | - | 4.93 | 100,165 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,047 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,754 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,727 |
| North Sea Countries | 0 | - | 4.92 | 86,574 |
| Black Sea Countries | 0 | - | 4.87 | 60,311 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,987 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,084 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,931 |
| Megadiverse Countries | 0 | - | 4.97 | 133,841 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,640 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,194 |
| African Great Lakes | 0 | - | 4.82 | 65,063 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,552 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,272 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,375 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,867,172 |
| Capitals by River | 0 | - | 4.55 | 48,223 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,324 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,345 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,430 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,777 |
| Landlocked Countries | 0 | - | 4.99 | 413,034 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,210 |
| Rivers of the United States | 0 | - | 4.93 | 65,439 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,265 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,433 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,045 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,105 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,499 |
| Countries with the Most Wolves | 0 | - | 4.92 | 106,971 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,226 |
| Biggest City by River | 0 | - | 4.41 | 52,684 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,895 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,095 |
| Island Countries | 0 | - | 4.99 | 707,329 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,331 |
| Himalayan Countries | 0 | - | 4.95 | 135,121 |
| Andean Countries | 0 | - | 4.94 | 82,703 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,119 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,041 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,798 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,502 |
| Danube Countries | 0 | - | 4.97 | 71,015 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,674 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,473 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,333 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,247 |
| European Landlocked Countries | 0 | - | 4.99 | 145,688 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,083 |
| Countries with the Most Species | 0 | - | 4.99 | 95,205 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,240 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,181 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,341 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,918 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,532 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,890 |
| Countries in the Alps | 0 | - | 4.87 | 116,717 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,498 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,122 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,960 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,346 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,079 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,944 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,701 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,665 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,991 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,172 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,006 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,390 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,695 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,696 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,925 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,582 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,212 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,706 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,935 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,428 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,555 |
| Largest Countries By Category | 0 | - | 4.97 | 156,658 |
| Countries by Countries | 0 | - | 4.96 | 62,189 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,572 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,683 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,596 |
| Northernmost Countries | 0 | - | 4.99 | 357,359 |
| Landforms by Country | 0 | - | 4.52 | 51,909 |
| Countries of South America | 0 | - | 5.00 | 913,681 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,037 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,880 |
| "Land" Countries | 0 | - | 4.98 | 333,472 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 52,953 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,836 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,315 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,912 |
| Countries with Megacities | 0 | - | 4.99 | 246,309 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,835 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,757 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,292 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,699 |
| Countries by Official Language | 0 | - | 4.95 | 192,626 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,935 |
| Countries in their Native Language | 0 | - | 4.99 | 196,505 |
| Independence from Whom | 0 | - | 4.99 | 209,528 |
| Subdivisions by Country | 0 | - | 4.86 | 50,039 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,610 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,680 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,885 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,382 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,844 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,760 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,567 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,946 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,620 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,077 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,187 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,722 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,431 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,374 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,448 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,462 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,788 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,113 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,621 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,242 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,200 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,904 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,873 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,551 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,790 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,988 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,194 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,893 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,280 |
| Widest Countries East to West | 0 | - | 4.92 | 128,543 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,197 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,111 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,531 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,637 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,536 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,965 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,036 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,554 |
| Countries with Double Letters | 0 | - | 4.97 | 93,253 |
| Countries that End in N | 0 | - | 4.94 | 156,324 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,532 |
| Countries with Six Letters | 0 | - | 4.93 | 210,232 |
| Countries with W | 0 | - | 4.97 | 158,134 |
| Countries with Z | 0 | - | 4.98 | 287,669 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,450 |
| Countries That End in U | 0 | - | 4.95 | 119,461 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,400 |
| Countries that End in O | 0 | - | 4.92 | 158,493 |
| Countries that End in R | 0 | - | 4.86 | 118,218 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,819 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,897 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,200 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,405 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,589 |
| Countries That End in Y | 0 | - | 4.90 | 185,164 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,205 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,577 |
| Countries that End in I | 0 | - | 4.94 | 134,328 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,050 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,153 |
| Countries That End in NIA | 0 | - | 4.92 | 108,944 |
| Countries That End in BIA | 0 | - | 4.92 | 147,633 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,997 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,424 |
| Countries That End in RIA | 0 | - | 4.93 | 126,030 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,933 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,028 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,460 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,840 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,280 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,880 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,052 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,579 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,776 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,715 |
| Countries that End in L | 0 | - | 4.94 | 155,656 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,795 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,969 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,472 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,236 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,377 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,423 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,981 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,850 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,089 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,275 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,454 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,575 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,152 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,396 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,270 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,334 |
| One Border Countries | 0 | - | 4.98 | 463,709 |
