| Countries With No Rivers | 0 | - | 4.96 | 76,269 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,616 |
| Countries with Fjords | 0 | - | 4.93 | 100,558 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,095 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,469 |
| African Great Lakes | 0 | - | 4.82 | 65,785 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,237 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,500 |
| Megadiverse Countries | 0 | - | 4.96 | 134,602 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,894 |
| North Sea Countries | 0 | - | 4.92 | 86,861 |
| Black Sea Countries | 0 | - | 4.87 | 60,489 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,199 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,307 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,073 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,253 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,554 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,038 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,087 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,688 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,740 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,433 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,211,669 |
| Landlocked Countries | 0 | - | 4.99 | 417,256 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,422 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,220 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,791 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,618 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,213 |
| Himalayan Countries | 0 | - | 4.95 | 136,761 |
| Andean Countries | 0 | - | 4.95 | 83,603 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,864 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,165 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,528 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,123 |
| Danube Countries | 0 | - | 4.97 | 71,487 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,302 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,904 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,297 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,296 |
| European Landlocked Countries | 0 | - | 4.99 | 146,195 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,876 |
| Countries with the Most Species | 0 | - | 4.99 | 102,378 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,005 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,355 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,536 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,204 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,856 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,433 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,963 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,044 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,804 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,901 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,322 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,071 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,043 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,860 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,393 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,397 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,240 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,789 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,052 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,063 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,839 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,941 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,467 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,307 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,366 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,750 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,874 |
| Largest Countries By Category | 0 | - | 4.97 | 157,356 |
| Countries by Countries | 0 | - | 4.96 | 62,668 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,145 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,895 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,532 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,613 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,545 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,099 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,213 |
| Island Countries | 0 | - | 4.99 | 709,091 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,029 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,113 |
| Northernmost Countries | 0 | - | 4.99 | 359,715 |
| Countries of South America | 0 | - | 5.00 | 920,523 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,094 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,892 |
| "Land" Countries | 0 | - | 4.98 | 335,179 |
| Biggest City by River | 0 | - | 4.41 | 52,766 |
| Landforms by Country | 0 | - | 4.52 | 51,948 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,001 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,894 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,101 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,486 |
| Countries with Megacities | 0 | - | 4.99 | 249,418 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,342 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,668 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,669 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,639 |
| Capitals by River | 0 | - | 4.55 | 48,274 |
| Countries by Official Language | 0 | - | 4.95 | 194,237 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,060 |
| Countries in their Native Language | 0 | - | 4.99 | 197,839 |
| Independence from Whom | 0 | - | 4.99 | 210,973 |
| Subdivisions by Country | 0 | - | 4.86 | 50,223 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,447 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,998 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,661 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,964 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,273 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,703 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,596 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,407 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,821 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,473 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,617 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,714 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,249 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,746 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,772 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,183 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,739 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,473 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,885 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,348 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,522 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,685 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,180 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,115 |
| Widest Countries East to West | 0 | - | 4.92 | 129,218 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,737 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,996 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,045 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,418 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,156 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.96 | 94,573 |
| Countries that End in N | 0 | - | 4.95 | 168,640 |
| Countries with Five Letters | 0 | - | 4.96 | 272,838 |
| Countries with Six Letters | 0 | - | 4.93 | 211,829 |
| Countries with W | 0 | - | 4.97 | 159,160 |
| Countries with Z | 0 | - | 4.98 | 289,243 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,350 |
| Countries That End in U | 0 | - | 4.95 | 120,193 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,383 |
| Countries that End in O | 0 | - | 4.92 | 159,029 |
| Countries that End in R | 0 | - | 4.87 | 118,607 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,385 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,959 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,879 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,907 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,492 |
| Countries That End in Y | 0 | - | 4.90 | 185,518 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,973 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,195 |
| Countries that End in I | 0 | - | 4.94 | 134,731 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,801 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,359 |
| Countries That End in BIA | 0 | - | 4.93 | 148,649 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,513 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,862 |
| Countries That End in RIA | 0 | - | 4.93 | 126,395 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,443 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,244 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,967 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,293 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,920 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,201 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,520 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,047 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,926 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,091 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,318 |
| Countries that End in L | 0 | - | 4.94 | 156,375 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,241 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,106 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,749 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,607 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,664 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,438 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,895 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,430 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,888 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,342 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,099 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,892 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,315 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,542 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,554 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,133 |
| One Border Countries | 0 | - | 4.98 | 466,787 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,112 |
