| Landlocked Countries | 0 | - | 4.99 | 416,361 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,139,902 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,788 |
| Himalayan Countries | 0 | - | 4.95 | 136,382 |
| Andean Countries | 0 | - | 4.95 | 83,419 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,681 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,907 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,371 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,975 |
| Danube Countries | 0 | - | 4.97 | 71,368 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,161 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,824 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,095 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,047 |
| European Landlocked Countries | 0 | - | 4.99 | 146,097 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,711 |
| Countries with the Most Species | 0 | - | 4.99 | 100,567 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,855 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,315 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,491 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,134 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,789 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,162 |
| Countries in the Alps | 0 | - | 4.86 | 117,295 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,874 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,819 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,233 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,711 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,778 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,224 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,951 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,973 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,776 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,310 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,341 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,192 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,699 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,971 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,980 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,651 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,871 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,406 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,201 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,829 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,490 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,794 |
| Largest Countries By Category | 0 | - | 4.97 | 157,214 |
| Countries by Countries | 0 | - | 4.96 | 62,566 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,837 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,069 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,406 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,057 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,447 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,586 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,697 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,553 |
| Island Countries | 0 | - | 4.99 | 708,717 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,961 |
| Northernmost Countries | 0 | - | 4.99 | 359,216 |
| Countries of South America | 0 | - | 5.00 | 919,274 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,157 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,703 |
| "Land" Countries | 0 | - | 4.98 | 334,444 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,717 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,189 |
| Countries with Megacities | 0 | - | 4.99 | 248,766 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,048 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,501 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,421 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,448 |
| Countries by Official Language | 0 | - | 4.95 | 193,919 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,412 |
| Countries in their Native Language | 0 | - | 4.99 | 197,550 |
| Independence from Whom | 0 | - | 4.99 | 210,569 |
| Subdivisions by Country | 0 | - | 4.86 | 50,184 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,271 |
| Megadiverse Countries | 0 | - | 4.96 | 134,518 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,752 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,067 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,615 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,941 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,414 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,194 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,523 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,522 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,354 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,801 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,122 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,569 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,669 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,631 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,836 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,184 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,452 |
| World Map Quiz | 0 | - | 4.81 | 64,014 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,198 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,667 |
| Countries by Founding Story | 0 | - | 4.95 | 76,840 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,006 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,632 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,363 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,615 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,229 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,427 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,599 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,131 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,618 |
| Widest Countries East to West | 0 | - | 4.92 | 129,119 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,320 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,612 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,901 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,934 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,952 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,329 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,042 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,663 |
| Countries with Double Letters | 0 | - | 4.96 | 93,944 |
| Countries that End in N | 0 | - | 4.94 | 161,808 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,374 |
| Countries with Six Letters | 0 | - | 4.93 | 210,964 |
| Countries with W | 0 | - | 4.97 | 158,643 |
| Countries with Z | 0 | - | 4.98 | 288,569 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,928 |
| Countries That End in U | 0 | - | 4.95 | 119,790 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,072 |
| Countries that End in O | 0 | - | 4.92 | 158,779 |
| Countries that End in R | 0 | - | 4.87 | 118,458 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,991 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,643 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,685 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,765 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,334 |
| Countries That End in Y | 0 | - | 4.90 | 185,365 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,775 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,036 |
| Countries that End in I | 0 | - | 4.94 | 134,628 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,641 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,380 |
| Countries That End in NIA | 0 | - | 4.92 | 109,261 |
| Countries That End in BIA | 0 | - | 4.93 | 148,498 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,381 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,735 |
| Countries That End in RIA | 0 | - | 4.93 | 126,299 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,288 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,000 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,813 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,162 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,730 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,112 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,397 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,908 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,796 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,969 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,469 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,146 |
| Countries that End in L | 0 | - | 4.94 | 156,240 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,735 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,048 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,699 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,541 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,600 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,252 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,769 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,248 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,788 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,204 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,023 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,858 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,282 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,503 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,490 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,470 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,729 |
| One Border Countries | 0 | - | 4.98 | 466,261 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,172 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,621 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,252 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,837 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,291 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,059 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,065 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,609 |
| Countries by National Anthem | 0 | - | 4.92 | 71,104 |
| NATO Countries | 0 | - | 4.98 | 277,888 |
| EU Countries Quiz | 0 | - | 4.99 | 271,446 |
| Recently Independent Countries | 0 | - | 4.98 | 158,340 |
| French-Speaking Countries | 0 | - | 4.85 | 269,686 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,481 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,833 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,212 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,182 |
| German-Speaking Countries | 0 | - | 4.91 | 142,723 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,993 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,613 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,266 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,910 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,074 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,056 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,273 |
| Olympic Host Countries | 0 | - | 4.98 | 199,441 |
