| Landlocked Countries | 0 | - | 4.99 | 422,657 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,636,457 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,857 |
| Himalayan Countries | 0 | - | 4.95 | 139,035 |
| Andean Countries | 0 | - | 4.93 | 84,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,028 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,109 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,616 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,930 |
| Danube Countries | 0 | - | 4.97 | 72,099 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,130 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,500 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,455 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,948 |
| European Landlocked Countries | 0 | - | 4.99 | 147,235 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,772 |
| Countries with the Most Species | 0 | - | 4.99 | 103,311 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,897 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,632 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,751 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,599 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,320 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,744 |
| Countries in the Alps | 0 | - | 4.87 | 118,316 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,551 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,197 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,721 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,676 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,587 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,001 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,760 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,570 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,228 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,925 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,691 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,574 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,301 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,545 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,609 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,066 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,373 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,512 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,208 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,312 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,333 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,286 |
| Largest Countries By Category | 0 | - | 4.97 | 158,350 |
| Countries by Countries | 0 | - | 4.96 | 63,322 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,779 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,311 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,585 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,754 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,508 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,221 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,708 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,748 |
| Island Countries | 0 | - | 4.99 | 711,282 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,734 |
| Northernmost Countries | 0 | - | 4.99 | 362,295 |
| Countries of South America | 0 | - | 5.00 | 928,316 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,140 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,406 |
| "Land" Countries | 0 | - | 4.98 | 337,545 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,369 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,100 |
| Countries with Megacities | 0 | - | 4.99 | 265,036 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,911 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,588 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,176 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,660 |
| Countries by Official Language | 0 | - | 4.95 | 195,386 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,557 |
| Countries in their Native Language | 0 | - | 4.99 | 199,172 |
| Independence from Whom | 0 | - | 4.99 | 212,261 |
| Subdivisions by Country | 0 | - | 4.87 | 50,464 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,852 |
| Megadiverse Countries | 0 | - | 4.96 | 135,071 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,209 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,390 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,273 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,131 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,217 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,638 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,566 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,219 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,695 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,170 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,831 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,930 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,246 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,002 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,396 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,528 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,403 |
| World Map Quiz | 0 | - | 4.81 | 65,185 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,636 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,413 |
| Countries by Founding Story | 0 | - | 4.95 | 77,432 |
| Countries by Road Signs | 0 | - | 4.98 | 54,079 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,227 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,356 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,065 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,429 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,968 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,074 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,357 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,481 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,618 |
| Widest Countries East to West | 0 | - | 4.92 | 129,717 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,473 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,462 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,146 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,814 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,647 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,936 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,398 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,814 |
| Countries with Double Letters | 0 | - | 4.96 | 96,388 |
| Countries that End in N | 0 | - | 4.95 | 171,271 |
| Countries with Five Letters | 0 | - | 4.96 | 282,760 |
| Countries with Six Letters | 0 | - | 4.94 | 213,712 |
| Countries with W | 0 | - | 4.97 | 160,443 |
| Countries with Z | 0 | - | 4.98 | 291,623 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,806 |
| Countries That End in U | 0 | - | 4.95 | 120,902 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,568 |
| Countries that End in O | 0 | - | 4.92 | 159,555 |
| Countries that End in R | 0 | - | 4.87 | 119,003 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,765 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,237 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,764 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,532 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,454 |
| Countries That End in Y | 0 | - | 4.91 | 185,917 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,011 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,931 |
| Countries that End in I | 0 | - | 4.94 | 135,135 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,191 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,857 |
| Countries That End in NIA | 0 | - | 4.92 | 109,835 |
| Countries That End in BIA | 0 | - | 4.93 | 149,271 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,174 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,481 |
| Countries That End in RIA | 0 | - | 4.93 | 126,857 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,074 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,794 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,790 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,224 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,768 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,617 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,080 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,461 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,588 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,462 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,358 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,055 |
| Countries that End in L | 0 | - | 4.94 | 156,890 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,089 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,285 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,069 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,994 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,041 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,878 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,752 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,198 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,907 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,556 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,922 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,127 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,724 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,910 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,283 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,246 |
| One Border Countries | 0 | - | 4.98 | 470,239 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,362 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,636,391 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,008 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,351 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,252 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,623 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,812 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,280 |
| Countries by National Anthem | 0 | - | 4.93 | 71,315 |
| NATO Countries | 0 | - | 4.98 | 281,855 |
| EU Countries Quiz | 0 | - | 4.99 | 275,917 |
| Recently Independent Countries | 0 | - | 4.98 | 159,549 |
| French-Speaking Countries | 0 | - | 4.85 | 271,026 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,920 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,763 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,648 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,853 |
| German-Speaking Countries | 0 | - | 4.91 | 145,806 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,009 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,326 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,644 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,432 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,151 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,388 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,677 |
| Olympic Host Countries | 0 | - | 4.98 | 201,236 |
