| Landlocked Countries | 0 | - | 4.99 | 421,155 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,514,587 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,037 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,040 |
| Himalayan Countries | 0 | - | 4.95 | 138,352 |
| Andean Countries | 0 | - | 4.93 | 84,395 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,614 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,537 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,245 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,646 |
| Danube Countries | 0 | - | 4.97 | 71,911 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,893 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,316 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,128 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,588 |
| European Landlocked Countries | 0 | - | 4.99 | 147,041 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,477 |
| Countries with the Most Species | 0 | - | 4.99 | 103,155 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,635 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,537 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,681 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,480 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,160 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,574 |
| Countries in the Alps | 0 | - | 4.87 | 118,063 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,477 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,866 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,590 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,516 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,402 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,880 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,563 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,418 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,121 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,763 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,591 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,456 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,132 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,397 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,430 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,697 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,229 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,733 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,913 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,516 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,857 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,153 |
| Largest Countries By Category | 0 | - | 4.97 | 158,045 |
| Countries by Countries | 0 | - | 4.96 | 63,097 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,564 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,245 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,537 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,582 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,772,447 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,855 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,277 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,692 |
| Island Countries | 0 | - | 4.99 | 710,715 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,747 |
| Northernmost Countries | 0 | - | 4.99 | 361,572 |
| Countries of South America | 0 | - | 5.00 | 926,066 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,302 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,364 |
| "Land" Countries | 0 | - | 4.98 | 337,057 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,476 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,673 |
| Countries with Megacities | 0 | - | 4.99 | 263,977 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,515 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,349 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,784 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,407 |
| Countries by Official Language | 0 | - | 4.95 | 195,074 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,147 |
| Countries in their Native Language | 0 | - | 4.99 | 198,697 |
| Independence from Whom | 0 | - | 4.99 | 211,890 |
| Subdivisions by Country | 0 | - | 4.86 | 50,389 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,584 |
| Megadiverse Countries | 0 | - | 4.96 | 134,942 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,933 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,299 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,877 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,077 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,007 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,548 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,343 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,982 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,601 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,054 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,505 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,830 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,143 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,915 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,300 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,445 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,923 |
| World Map Quiz | 0 | - | 4.81 | 64,972 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,790 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,270 |
| Countries by Founding Story | 0 | - | 4.95 | 77,295 |
| Countries by Road Signs | 0 | - | 4.98 | 53,911 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,921 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,177 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,904 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,978 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,809 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,930 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,231 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,394 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,506 |
| Widest Countries East to West | 0 | - | 4.92 | 129,568 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,432 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,274 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,088 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,703 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,487 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,769 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,335 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,782 |
| Countries with Double Letters | 0 | - | 4.96 | 95,987 |
| Countries that End in N | 0 | - | 4.95 | 170,890 |
| Countries with Five Letters | 0 | - | 4.96 | 282,026 |
| Countries with Six Letters | 0 | - | 4.94 | 213,310 |
| Countries with W | 0 | - | 4.97 | 160,148 |
| Countries with Z | 0 | - | 4.98 | 291,180 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,511 |
| Countries That End in U | 0 | - | 4.95 | 120,748 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,279 |
| Countries that End in O | 0 | - | 4.92 | 159,438 |
| Countries that End in R | 0 | - | 4.87 | 118,910 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,673 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,877 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,568 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,386 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,304 |
| Countries That End in Y | 0 | - | 4.91 | 185,814 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,769 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,740 |
| Countries that End in I | 0 | - | 4.94 | 135,034 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,937 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,758 |
| Countries That End in NIA | 0 | - | 4.92 | 109,709 |
| Countries That End in BIA | 0 | - | 4.93 | 149,104 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,004 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,328 |
| Countries That End in RIA | 0 | - | 4.93 | 126,742 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,922 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,334 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,557 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,955 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,523 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,518 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,933 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,416 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,436 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,368 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,170 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,862 |
| Countries that End in L | 0 | - | 4.94 | 156,751 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,246 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,239 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,957 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,894 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,925 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,575 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,538 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,899 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,427 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,295 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,794 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,053 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,675 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,816 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,807 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,624 |
| One Border Countries | 0 | - | 4.98 | 469,179 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,831,452 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,627,487 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,801 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,989 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,005 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,465 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,623 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,142 |
| Countries by National Anthem | 0 | - | 4.93 | 71,264 |
| NATO Countries | 0 | - | 4.98 | 280,897 |
| EU Countries Quiz | 0 | - | 4.99 | 274,822 |
| Recently Independent Countries | 0 | - | 4.98 | 159,362 |
| French-Speaking Countries | 0 | - | 4.85 | 270,679 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,862 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,253 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,811 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,763 |
| German-Speaking Countries | 0 | - | 4.91 | 145,643 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,894 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,226 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 166,022 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,861 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,613 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,835 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,095 |
