| Landlocked Countries | 0 | - | 4.99 | 416,242 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,131,100 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,733 |
| Himalayan Countries | 0 | - | 4.95 | 136,332 |
| Andean Countries | 0 | - | 4.95 | 83,392 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,654 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,885 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,348 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,956 |
| Danube Countries | 0 | - | 4.97 | 71,352 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,149 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,814 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,072 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,020 |
| European Landlocked Countries | 0 | - | 4.99 | 146,078 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,695 |
| Countries with the Most Species | 0 | - | 4.99 | 99,904 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,841 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,312 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,486 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,128 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,781 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,152 |
| Countries in the Alps | 0 | - | 4.86 | 117,280 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,866 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,803 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,226 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,695 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,756 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,217 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,943 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,967 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,765 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,298 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,337 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,689 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,969 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,633 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,866 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,400 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,152 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,766 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,465 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,789 |
| Largest Countries By Category | 0 | - | 4.97 | 157,203 |
| Countries by Countries | 0 | - | 4.96 | 62,558 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,817 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,068 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,403 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,047 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,687 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,511 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,647 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,477 |
| Island Countries | 0 | - | 4.99 | 708,673 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,865 |
| Northernmost Countries | 0 | - | 4.99 | 359,161 |
| Countries of South America | 0 | - | 5.00 | 919,114 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,957 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,331 |
| "Land" Countries | 0 | - | 4.98 | 334,316 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,164 |
| Countries with Megacities | 0 | - | 4.99 | 248,708 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,029 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,482 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,397 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,432 |
| Countries by Official Language | 0 | - | 4.95 | 193,880 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,356 |
| Countries in their Native Language | 0 | - | 4.99 | 197,526 |
| Independence from Whom | 0 | - | 4.99 | 210,438 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,253 |
| Megadiverse Countries | 0 | - | 4.96 | 134,512 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,714 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,061 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,610 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,401 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,186 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,503 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,516 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,349 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,798 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,107 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,561 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,660 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,628 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,833 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,183 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,456 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,409 |
| World Map Quiz | 0 | - | 4.81 | 63,990 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,152 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,661 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,983 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,624 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,348 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,599 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,223 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,414 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,590 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,125 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,611 |
| Widest Countries East to West | 0 | - | 4.92 | 129,107 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,318 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,599 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,895 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,928 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,942 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,319 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,016 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,661 |
| Countries with Double Letters | 0 | - | 4.96 | 93,845 |
| Countries that End in N | 0 | - | 4.94 | 157,277 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,245 |
| Countries with Six Letters | 0 | - | 4.93 | 210,870 |
| Countries with W | 0 | - | 4.97 | 158,535 |
| Countries with Z | 0 | - | 4.98 | 288,438 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,872 |
| Countries That End in U | 0 | - | 4.95 | 119,672 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,037 |
| Countries that End in O | 0 | - | 4.92 | 158,713 |
| Countries that End in R | 0 | - | 4.87 | 118,423 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,978 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,601 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,655 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,742 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,307 |
| Countries That End in Y | 0 | - | 4.90 | 185,331 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,755 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,015 |
| Countries that End in I | 0 | - | 4.94 | 134,606 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,619 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,374 |
| Countries That End in NIA | 0 | - | 4.92 | 109,239 |
| Countries That End in BIA | 0 | - | 4.93 | 148,474 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,363 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,720 |
| Countries That End in RIA | 0 | - | 4.93 | 126,281 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,267 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,971 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,794 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,149 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,701 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,091 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,374 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,893 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,784 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,954 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,457 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,117 |
| Countries that End in L | 0 | - | 4.94 | 156,218 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,675 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,040 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,693 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,528 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,592 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,227 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,758 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,217 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,778 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,193 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,012 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,857 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,279 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,500 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,484 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,327 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,695 |
| One Border Countries | 0 | - | 4.98 | 466,210 |
| Top Producing Countries | 0 | - | 4.63 | 116,021 |
| ISO Country Codes | 0 | - | 4.45 | 82,255 |
| Countries on the Equator | 0 | - | 4.63 | 140,464 |
| Members of the Arab League | 0 | - | 4.77 | 75,517 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,667 |
| Separatist Movements | 0 | - | 4.44 | 45,728 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,795 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,690 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,050 |
| Westernmost Countries | 0 | - | 4.50 | 49,463 |
| Easternmost Countries | 0 | - | 4.75 | 62,733 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,534 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,129 |
| Indochina Countries | 0 | - | 4.74 | 66,020 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,555 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,876 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,910 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,007 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,264 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,515 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,680 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,797 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,128 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,493 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,359 |
| Flyover Countries | 0 | - | 4.68 | 50,645 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,568 |
