| Landlocked Countries | 0 | - | 4.99 | 422,910 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,655,256 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,975 |
| Himalayan Countries | 0 | - | 4.95 | 139,136 |
| Andean Countries | 0 | - | 4.93 | 84,852 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,073 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,196 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,659 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,968 |
| Danube Countries | 0 | - | 4.97 | 72,126 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,170 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,528 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,511 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,017 |
| European Landlocked Countries | 0 | - | 4.99 | 147,262 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,818 |
| Countries with the Most Species | 0 | - | 4.99 | 103,335 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,943 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,645 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,762 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,611 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,352 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,773 |
| Countries in the Alps | 0 | - | 4.87 | 118,350 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,697 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,260 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,747 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,696 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,619 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,032 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,801 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,595 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,243 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,943 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,714 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,585 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,315 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,556 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,626 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,129 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,392 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,677 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,232 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,442 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,400 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,305 |
| Largest Countries By Category | 0 | - | 4.97 | 158,380 |
| Countries by Countries | 0 | - | 4.96 | 63,344 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,826 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,320 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,589 |
| All Countries by Population With a Map | 0 | - | 4.99 | 109,910 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,120 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,778 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,134 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,423 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,798 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,902 |
| Island Countries | 0 | - | 4.99 | 711,372 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,035 |
| Northernmost Countries | 0 | - | 4.99 | 362,421 |
| Countries of South America | 0 | - | 5.00 | 928,651 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,544 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,167 |
| "Land" Countries | 0 | - | 4.98 | 337,597 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,957 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,161 |
| Countries with Megacities | 0 | - | 4.99 | 265,237 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,992 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,622 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,246 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,695 |
| Countries by Official Language | 0 | - | 4.95 | 195,448 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,641 |
| Countries in their Native Language | 0 | - | 4.99 | 199,220 |
| Independence from Whom | 0 | - | 4.99 | 212,311 |
| Subdivisions by Country | 0 | - | 4.87 | 50,477 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,891 |
| Megadiverse Countries | 0 | - | 4.96 | 135,088 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,249 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,405 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,284 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,138 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,260 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,653 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,598 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,415 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,702 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,178 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,880 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,942 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,262 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,010 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,416 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,542 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,495 |
| World Map Quiz | 0 | - | 4.81 | 65,231 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,754 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,440 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,246 |
| Countries by Founding Story | 0 | - | 4.95 | 77,450 |
| Countries by Road Signs | 0 | - | 4.98 | 54,100 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,282 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,389 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,099 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,525 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,998 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,108 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,382 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,491 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,643 |
| Widest Countries East to West | 0 | - | 4.92 | 129,737 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,478 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,497 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,249 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,829 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,683 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,960 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,407 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,818 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,033 |
| Countries with Double Letters | 0 | - | 4.96 | 96,443 |
| Countries that End in N | 0 | - | 4.95 | 171,324 |
| Countries with Five Letters | 0 | - | 4.96 | 282,864 |
| Countries with Six Letters | 0 | - | 4.94 | 213,784 |
| Countries with W | 0 | - | 4.96 | 160,476 |
| Countries with Z | 0 | - | 4.98 | 291,689 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,843 |
| Countries That End in U | 0 | - | 4.95 | 120,929 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,610 |
| Countries that End in O | 0 | - | 4.92 | 159,581 |
| Countries that End in R | 0 | - | 4.87 | 119,016 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,773 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,288 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,795 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,567 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,474 |
| Countries That End in Y | 0 | - | 4.91 | 185,934 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,044 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,969 |
| Countries that End in I | 0 | - | 4.94 | 135,160 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,229 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,873 |
| Countries That End in NIA | 0 | - | 4.92 | 109,851 |
| Countries That End in BIA | 0 | - | 4.93 | 149,295 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,204 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,512 |
| Countries That End in RIA | 0 | - | 4.93 | 126,876 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,094 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,858 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,833 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,265 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,812 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,633 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,099 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,466 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,613 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,479 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,395 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,083 |
| Countries that End in L | 0 | - | 4.94 | 156,909 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,205 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,286 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,084 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,012 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,055 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,926 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,787 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,217 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,932 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,592 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,954 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,135 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,733 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,957 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,706 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,345 |
| One Border Countries | 0 | - | 4.98 | 470,397 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,524 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,213 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,637,584 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,032 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,408 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,290 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,650 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,846 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,305 |
| Countries by National Anthem | 0 | - | 4.93 | 71,319 |
| NATO Countries | 0 | - | 4.98 | 281,980 |
| EU Countries Quiz | 0 | - | 4.99 | 276,066 |
| Recently Independent Countries | 0 | - | 4.98 | 159,580 |
| French-Speaking Countries | 0 | - | 4.85 | 271,066 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,930 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,876 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,780 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,028 |
| German-Speaking Countries | 0 | - | 4.91 | 145,828 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,028 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,344 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,769 |
