| Landlocked Countries | 0 | - | 4.99 | 416,987 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,190,123 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,086 |
| Himalayan Countries | 0 | - | 4.95 | 136,645 |
| Andean Countries | 0 | - | 4.95 | 83,557 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,813 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,101 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,481 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,071 |
| Danube Countries | 0 | - | 4.97 | 71,464 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,274 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,875 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,224 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,216 |
| European Landlocked Countries | 0 | - | 4.99 | 146,164 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,825 |
| Countries with the Most Species | 0 | - | 4.99 | 102,191 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,953 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,347 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,526 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,185 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,835 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,214 |
| Countries in the Alps | 0 | - | 4.86 | 117,385 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,931 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,976 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,279 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,777 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,866 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,288 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,025 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,016 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,837 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,377 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,381 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,221 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,757 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,026 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,032 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,784 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,919 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,451 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,278 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,201 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,663 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,849 |
| Largest Countries By Category | 0 | - | 4.97 | 157,315 |
| Countries by Countries | 0 | - | 4.96 | 62,630 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,918 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,089 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,414 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,120 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,743,036 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,261 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,953 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,006 |
| Island Countries | 0 | - | 4.99 | 708,950 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,749 |
| Northernmost Countries | 0 | - | 4.99 | 359,538 |
| Countries of South America | 0 | - | 5.00 | 920,156 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,647 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,875 |
| "Land" Countries | 0 | - | 4.98 | 334,770 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,333 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,417 |
| Countries with Megacities | 0 | - | 4.99 | 249,222 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,273 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,619 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,584 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,593 |
| Countries by Official Language | 0 | - | 4.95 | 194,087 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,888 |
| Countries in their Native Language | 0 | - | 4.99 | 197,708 |
| Independence from Whom | 0 | - | 4.99 | 210,893 |
| Subdivisions by Country | 0 | - | 4.86 | 50,214 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,406 |
| Megadiverse Countries | 0 | - | 4.96 | 134,572 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,909 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,089 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,648 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,956 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,474 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,256 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,655 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,576 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,390 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,813 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,370 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,598 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,698 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,665 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,875 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,227 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,667 |
| World Map Quiz | 0 | - | 4.81 | 64,167 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,577 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,737 |
| Countries by Founding Story | 0 | - | 4.95 | 76,914 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,115 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,705 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,434 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,788 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,304 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,493 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,656 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,163 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,699 |
| Widest Countries East to West | 0 | - | 4.92 | 129,177 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,335 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,702 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,935 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,973 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,011 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,389 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,129 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,683 |
| Countries with Double Letters | 0 | - | 4.96 | 94,266 |
| Countries that End in N | 0 | - | 4.95 | 167,698 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 261,055 |
| Countries with Six Letters | 0 | - | 4.93 | 211,277 |
| Countries with W | 0 | - | 4.97 | 158,925 |
| Countries with Z | 0 | - | 4.98 | 288,919 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,132 |
| Countries That End in U | 0 | - | 4.95 | 120,006 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,237 |
| Countries that End in O | 0 | - | 4.92 | 158,923 |
| Countries that End in R | 0 | - | 4.87 | 118,545 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,315 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,840 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,794 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,845 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,427 |
| Countries That End in Y | 0 | - | 4.90 | 185,463 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,901 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,127 |
| Countries that End in I | 0 | - | 4.94 | 134,701 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,742 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,429 |
| Countries That End in NIA | 0 | - | 4.92 | 109,318 |
| Countries That End in BIA | 0 | - | 4.93 | 148,606 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,457 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,805 |
| Countries That End in RIA | 0 | - | 4.93 | 126,370 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,373 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,162 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,900 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,232 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,837 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,171 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,477 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,984 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,874 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,040 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,560 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,255 |
| Countries that End in L | 0 | - | 4.94 | 156,324 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,066 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,084 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,724 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,585 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,637 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,381 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,843 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,388 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,861 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,295 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,066 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,882 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,305 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,534 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,533 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,448 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,986 |
| One Border Countries | 0 | - | 4.98 | 466,623 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,814,993 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,605,695 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,323 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,978 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,383 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,115 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,126 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,675 |
| Countries by National Anthem | 0 | - | 4.92 | 71,132 |
| NATO Countries | 0 | - | 4.98 | 278,290 |
| EU Countries Quiz | 0 | - | 4.99 | 271,850 |
| Recently Independent Countries | 0 | - | 4.98 | 158,429 |
| French-Speaking Countries | 0 | - | 4.85 | 269,822 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,589 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,035 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,550 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,631 |
| German-Speaking Countries | 0 | - | 4.91 | 144,304 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,067 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,672 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,468 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,164 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,255 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,130 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,356 |
| Olympic Host Countries | 0 | - | 4.98 | 199,699 |
