| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,737 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,021 |
| Landlocked Countries | 0 | - | 4.99 | 423,055 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,665 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,667,907 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,371 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,262 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,960 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,033 |
| Himalayan Countries | 0 | - | 4.95 | 139,195 |
| Andean Countries | 0 | - | 4.93 | 84,883 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,100 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,239 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,677 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,995 |
| Danube Countries | 0 | - | 4.97 | 72,140 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,196 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,546 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,540 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,051 |
| European Landlocked Countries | 0 | - | 4.99 | 147,284 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,843 |
| Countries with the Most Species | 0 | - | 4.99 | 103,351 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,967 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,648 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,768 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,621 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,370 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,790 |
| Countries in the Alps | 0 | - | 4.87 | 118,366 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,774 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,297 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,760 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,721 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,644 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,043 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,820 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,611 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,250 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,957 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,723 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,595 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,331 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,569 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,637 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,170 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,405 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,782 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,256 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,525 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,436 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,314 |
| Largest Countries By Category | 0 | - | 4.97 | 158,405 |
| Countries by Countries | 0 | - | 4.96 | 63,361 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,855 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,328 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,795 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,236 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,563 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,859 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,017 |
| Island Countries | 0 | - | 4.99 | 711,436 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,226 |
| Northernmost Countries | 0 | - | 4.99 | 362,508 |
| Countries of South America | 0 | - | 5.00 | 928,855 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,791 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,693 |
| "Land" Countries | 0 | - | 4.98 | 337,641 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,854 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,544 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,761 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,698 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,370 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,215 |
| Countries with Megacities | 0 | - | 4.99 | 265,340 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,042 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,644 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,285 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,718 |
| Countries by Official Language | 0 | - | 4.95 | 195,478 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,682 |
| Countries in their Native Language | 0 | - | 4.99 | 199,250 |
| Independence from Whom | 0 | - | 4.99 | 212,343 |
| Subdivisions by Country | 0 | - | 4.87 | 50,485 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,917 |
| Megadiverse Countries | 0 | - | 4.96 | 135,098 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,285 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,417 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,295 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,142 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,275 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,661 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,620 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,418 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,710 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,183 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,912 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,954 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,271 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,015 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,428 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,551 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,549 |
| World Map Quiz | 0 | - | 4.81 | 65,254 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,850 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,459 |
| Countries by Founding Story | 0 | - | 4.95 | 77,459 |
| Countries by Road Signs | 0 | - | 4.98 | 54,118 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,316 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,416 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,122 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,590 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,015 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,127 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,401 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,497 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,653 |
| Widest Countries East to West | 0 | - | 4.92 | 129,756 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,481 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,516 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,380 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,845 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,704 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,978 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,415 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,489 |
| Countries that End in N | 0 | - | 4.95 | 171,378 |
| Countries with Five Letters | 0 | - | 4.96 | 282,931 |
| Countries with Six Letters | 0 | - | 4.94 | 213,820 |
| Countries with W | 0 | - | 4.96 | 160,514 |
| Countries with Z | 0 | - | 4.98 | 291,737 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,868 |
| Countries That End in U | 0 | - | 4.95 | 120,945 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,640 |
| Countries that End in O | 0 | - | 4.92 | 159,599 |
| Countries that End in R | 0 | - | 4.87 | 119,027 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,791 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,324 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,824 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,583 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,495 |
| Countries That End in Y | 0 | - | 4.91 | 185,946 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,065 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,990 |
| Countries that End in I | 0 | - | 4.94 | 135,170 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,884 |
| Countries That End in NIA | 0 | - | 4.92 | 109,858 |
| Countries That End in BIA | 0 | - | 4.93 | 149,309 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,220 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,528 |
| Countries That End in RIA | 0 | - | 4.93 | 126,884 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,126 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,899 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,852 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,282 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,832 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,640 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,117 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,470 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,631 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,492 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,413 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,108 |
| Countries that End in L | 0 | - | 4.94 | 156,926 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,281 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,290 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,096 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,025 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,070 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,948 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,811 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,235 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,953 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,609 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,970 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,140 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,948 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,407 |
| One Border Countries | 0 | - | 4.98 | 470,482 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 71,975 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,407 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,849 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,638,389 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,042 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,444 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,314 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,862 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,319 |
| Countries by National Anthem | 0 | - | 4.93 | 71,325 |
| NATO Countries | 0 | - | 4.98 | 282,061 |
| EU Countries Quiz | 0 | - | 4.99 | 276,180 |
| Recently Independent Countries | 0 | - | 4.98 | 159,601 |
| French-Speaking Countries | 0 | - | 4.85 | 271,105 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,940 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,944 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,864 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,141 |
