| Countries With No Rivers | 0 | - | 4.96 | 76,241 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,581 |
| Countries with Fjords | 0 | - | 4.93 | 100,521 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,048 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,441 |
| African Great Lakes | 0 | - | 4.82 | 65,733 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,215 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,476 |
| Megadiverse Countries | 0 | - | 4.96 | 134,570 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,865 |
| North Sea Countries | 0 | - | 4.92 | 86,824 |
| Black Sea Countries | 0 | - | 4.87 | 60,463 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,166 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,271 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,061 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,205 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,524 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,963 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,063 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,669 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,721 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,423 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,186,501 |
| Landlocked Countries | 0 | - | 4.99 | 416,951 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,407 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,726 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,770 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,599 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,062 |
| Himalayan Countries | 0 | - | 4.95 | 136,623 |
| Andean Countries | 0 | - | 4.95 | 83,550 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,803 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,090 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,473 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,064 |
| Danube Countries | 0 | - | 4.97 | 71,464 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,270 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,872 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,218 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,208 |
| European Landlocked Countries | 0 | - | 4.99 | 146,163 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,821 |
| Countries with the Most Species | 0 | - | 4.99 | 102,147 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,947 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,344 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,524 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,183 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,829 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,212 |
| Countries in the Alps | 0 | - | 4.86 | 117,378 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,929 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,962 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,276 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,768 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,863 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,280 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,019 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,011 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,834 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,372 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,377 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,215 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,753 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,023 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,031 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,770 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,917 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,448 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,272 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,174 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,646 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,848 |
| Largest Countries By Category | 0 | - | 4.97 | 157,308 |
| Countries by Countries | 0 | - | 4.96 | 62,625 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,116 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,870 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,501 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,605 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,203 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,933 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,975 |
| Island Countries | 0 | - | 4.99 | 708,915 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,222 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,689 |
| Northernmost Countries | 0 | - | 4.99 | 359,511 |
| Countries of South America | 0 | - | 5.00 | 920,080 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,548 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,691 |
| "Land" Countries | 0 | - | 4.98 | 334,730 |
| Biggest City by River | 0 | - | 4.41 | 52,756 |
| Landforms by Country | 0 | - | 4.52 | 51,940 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,993 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,383 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,959 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,405 |
| Countries with Megacities | 0 | - | 4.99 | 249,187 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,259 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,612 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,573 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,577 |
| Capitals by River | 0 | - | 4.55 | 48,270 |
| Countries by Official Language | 0 | - | 4.95 | 194,076 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,853 |
| Countries in their Native Language | 0 | - | 4.99 | 197,688 |
| Independence from Whom | 0 | - | 4.99 | 210,878 |
| Subdivisions by Country | 0 | - | 4.86 | 50,213 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,399 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,900 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,088 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,643 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,955 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,470 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,250 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,650 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,572 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,390 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,812 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,350 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,594 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,697 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,662 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,875 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,223 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,657 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,732 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,104 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,694 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,425 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,772 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,300 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,489 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,653 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,160 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,665 |
| Widest Countries East to West | 0 | - | 4.92 | 129,171 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,334 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,695 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,935 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,972 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,004 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,386 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,127 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,682 |
| Countries with Double Letters | 0 | - | 4.96 | 94,228 |
| Countries that End in N | 0 | - | 4.95 | 167,496 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,696 |
| Countries with Six Letters | 0 | - | 4.93 | 211,220 |
| Countries with W | 0 | - | 4.97 | 158,901 |
| Countries with Z | 0 | - | 4.98 | 288,889 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,108 |
| Countries That End in U | 0 | - | 4.95 | 119,984 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,221 |
| Countries that End in O | 0 | - | 4.92 | 158,911 |
| Countries that End in R | 0 | - | 4.87 | 118,540 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,308 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,822 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,786 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,842 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,420 |
| Countries That End in Y | 0 | - | 4.90 | 185,456 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,890 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,121 |
| Countries that End in I | 0 | - | 4.94 | 134,700 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,736 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,425 |
| Countries That End in NIA | 0 | - | 4.92 | 109,316 |
| Countries That End in BIA | 0 | - | 4.93 | 148,603 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,454 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,801 |
| Countries That End in RIA | 0 | - | 4.93 | 126,367 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,368 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,156 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,892 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,226 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,826 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,164 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,471 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,978 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,869 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,035 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,246 |
| Countries that End in L | 0 | - | 4.94 | 156,318 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,030 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,082 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,722 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,583 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,633 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,371 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,830 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,377 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,856 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,288 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,063 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,881 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,300 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,531 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,531 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,814,714 |
| One Border Countries | 0 | - | 4.98 | 466,578 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,605,462 |
