| Landlocked Countries | 0 | - | 4.99 | 420,318 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,446,250 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,633 |
| Himalayan Countries | 0 | - | 4.95 | 138,032 |
| Andean Countries | 0 | - | 4.95 | 84,231 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,454 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,265 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,094 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,534 |
| Danube Countries | 0 | - | 4.97 | 71,811 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,754 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,200 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,935 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,363 |
| European Landlocked Countries | 0 | - | 4.99 | 146,947 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,345 |
| Countries with the Most Species | 0 | - | 4.99 | 103,073 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,508 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,493 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,651 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,431 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,496 |
| Countries in the Alps | 0 | - | 4.87 | 117,940 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,050 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,663 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,538 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,434 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,281 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,826 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,454 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,323 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,065 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,689 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,559 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,414 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,054 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,337 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,348 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,490 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,163 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,673 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,785 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,087 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,623 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,093 |
| Largest Countries By Category | 0 | - | 4.97 | 157,899 |
| Countries by Countries | 0 | - | 4.97 | 62,996 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,440 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,212 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,491 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,539 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,152 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,001 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,144 |
| Island Countries | 0 | - | 4.99 | 710,319 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,679 |
| Northernmost Countries | 0 | - | 4.99 | 361,157 |
| Countries of South America | 0 | - | 5.00 | 924,883 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,734 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,409 |
| "Land" Countries | 0 | - | 4.98 | 336,152 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,248 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,428 |
| Countries with Megacities | 0 | - | 4.99 | 263,234 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,263 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,224 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,560 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,261 |
| Countries by Official Language | 0 | - | 4.95 | 194,908 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,909 |
| Countries in their Native Language | 0 | - | 4.99 | 198,436 |
| Independence from Whom | 0 | - | 4.99 | 211,678 |
| Subdivisions by Country | 0 | - | 4.86 | 50,354 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,952 |
| Megadiverse Countries | 0 | - | 4.96 | 134,869 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,768 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,057 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,894 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,470 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,193 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,928 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,556 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,033 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,320 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,086 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,857 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,249 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,408 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,609 |
| World Map Quiz | 0 | - | 4.81 | 64,842 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,339 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,178 |
| Countries by Founding Story | 0 | - | 4.95 | 77,204 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,759 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,079 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,816 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,736 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,696 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,834 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,959 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,345 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,421 |
| Widest Countries East to West | 0 | - | 4.92 | 129,490 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,148 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,054 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,632 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,399 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,693 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,306 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,759 |
| Countries with Double Letters | 0 | - | 4.97 | 95,364 |
| Countries that End in N | 0 | - | 4.95 | 170,400 |
| Countries with Five Letters | 0 | - | 4.96 | 281,305 |
| Countries with Six Letters | 0 | - | 4.94 | 212,814 |
| Countries with W | 0 | - | 4.97 | 159,711 |
| Countries with Z | 0 | - | 4.98 | 290,620 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,977 |
| Countries That End in U | 0 | - | 4.95 | 120,515 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,990 |
| Countries that End in O | 0 | - | 4.92 | 159,285 |
| Countries that End in R | 0 | - | 4.87 | 118,804 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,571 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,593 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,321 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,217 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,829 |
| Countries That End in Y | 0 | - | 4.91 | 185,720 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,525 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,603 |
| Countries that End in I | 0 | - | 4.94 | 134,948 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,718 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,667 |
| Countries That End in NIA | 0 | - | 4.92 | 109,623 |
| Countries That End in BIA | 0 | - | 4.93 | 148,975 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,881 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,200 |
| Countries That End in RIA | 0 | - | 4.93 | 126,641 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,774 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,083 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,407 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,798 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,335 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,414 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,795 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,358 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,296 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,287 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,997 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,712 |
| Countries that End in L | 0 | - | 4.94 | 156,649 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,760 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,189 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,910 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,822 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,872 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,394 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,386 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,804 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,323 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,829 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,707 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,015 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,641 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,759 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,471 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,279 |
| One Border Countries | 0 | - | 4.98 | 468,537 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,361 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,356 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,710 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,768 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,880 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,385 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,529 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,072 |
| Countries by National Anthem | 0 | - | 4.92 | 71,234 |
| NATO Countries | 0 | - | 4.98 | 280,301 |
| EU Countries Quiz | 0 | - | 4.99 | 274,114 |
| Recently Independent Countries | 0 | - | 4.98 | 159,213 |
| French-Speaking Countries | 0 | - | 4.85 | 270,477 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,818 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,010 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,277 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,078 |
| German-Speaking Countries | 0 | - | 4.92 | 145,542 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,798 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,161 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,701 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,375 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,340 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,583 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,815 |
| Olympic Host Countries | 0 | - | 4.98 | 200,714 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,816 |
