| Landlocked Countries | 0 | - | 4.99 | 421,529 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,547,534 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,222 |
| Himalayan Countries | 0 | - | 4.95 | 138,519 |
| Andean Countries | 0 | - | 4.93 | 84,495 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,679 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,667 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,309 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,717 |
| Danube Countries | 0 | - | 4.97 | 71,952 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,950 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,368 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,208 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,672 |
| European Landlocked Countries | 0 | - | 4.99 | 147,081 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,549 |
| Countries with the Most Species | 0 | - | 4.99 | 103,187 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,685 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,556 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,698 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,507 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,189 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,606 |
| Countries in the Alps | 0 | - | 4.87 | 118,137 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,786 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,955 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,613 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,553 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,439 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,911 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,619 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,452 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,152 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,802 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,622 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,486 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,178 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,427 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,477 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,787 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,272 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,870 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,989 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,713 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,964 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,180 |
| Largest Countries By Category | 0 | - | 4.97 | 158,130 |
| Countries by Countries | 0 | - | 4.96 | 63,143 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,624 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,264 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,552 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,454 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,946 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,633 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,516 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,207 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,381 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,940 |
| Island Countries | 0 | - | 4.99 | 710,881 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,289 |
| Northernmost Countries | 0 | - | 4.99 | 361,763 |
| Countries of South America | 0 | - | 5.00 | 926,701 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,064 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,812 |
| "Land" Countries | 0 | - | 4.98 | 337,188 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,556 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,773 |
| Countries with Megacities | 0 | - | 4.99 | 264,285 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,628 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,405 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,894 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,471 |
| Countries by Official Language | 0 | - | 4.95 | 195,167 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,247 |
| Countries in their Native Language | 0 | - | 4.99 | 198,965 |
| Independence from Whom | 0 | - | 4.99 | 211,978 |
| Subdivisions by Country | 0 | - | 4.86 | 50,407 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,650 |
| Megadiverse Countries | 0 | - | 4.96 | 134,974 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,001 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,326 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,125 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,091 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,058 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,569 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,401 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,002 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,624 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,117 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,596 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,850 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,177 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,936 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,327 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,468 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,043 |
| World Map Quiz | 0 | - | 4.81 | 65,031 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,036 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,305 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,071 |
| Countries by Founding Story | 0 | - | 4.95 | 77,326 |
| Countries by Road Signs | 0 | - | 4.98 | 53,970 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,000 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,225 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,951 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,087 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,837 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,970 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,261 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,413 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,534 |
| Widest Countries East to West | 0 | - | 4.92 | 129,603 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,438 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,332 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,105 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,735 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,545 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,815 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,357 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,790 |
| Countries With the Tallest People | 0 | - | 4.93 | 94,961 |
| Countries with Double Letters | 0 | - | 4.96 | 96,116 |
| Countries that End in N | 0 | - | 4.95 | 171,003 |
| Countries with Five Letters | 0 | - | 4.96 | 282,217 |
| Countries with Six Letters | 0 | - | 4.94 | 213,431 |
| Countries with W | 0 | - | 4.97 | 160,238 |
| Countries with Z | 0 | - | 4.98 | 291,309 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,598 |
| Countries That End in U | 0 | - | 4.95 | 120,794 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,360 |
| Countries that End in O | 0 | - | 4.92 | 159,473 |
| Countries that End in R | 0 | - | 4.87 | 118,938 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,697 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,978 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,624 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,419 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,345 |
| Countries That End in Y | 0 | - | 4.91 | 185,842 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,830 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,793 |
| Countries that End in I | 0 | - | 4.94 | 135,055 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,004 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,784 |
| Countries That End in NIA | 0 | - | 4.92 | 109,735 |
| Countries That End in BIA | 0 | - | 4.93 | 149,148 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,050 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,377 |
| Countries That End in RIA | 0 | - | 4.93 | 126,771 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,969 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,465 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,636 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,026 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,594 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,544 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,976 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,429 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,474 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,389 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,223 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,920 |
| Countries that End in L | 0 | - | 4.94 | 156,785 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,486 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,247 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,991 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,912 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,958 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,664 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,589 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,937 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,484 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,368 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,826 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,072 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,691 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,843 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,426 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,799 |
| One Border Countries | 0 | - | 4.98 | 469,619 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,440 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,833,117 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,629,824 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,851 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,088 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,071 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,514 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,677 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,180 |
| Countries by National Anthem | 0 | - | 4.93 | 71,280 |
| NATO Countries | 0 | - | 4.98 | 281,253 |
| EU Countries Quiz | 0 | - | 4.99 | 275,177 |
| Recently Independent Countries | 0 | - | 4.98 | 159,411 |
| French-Speaking Countries | 0 | - | 4.85 | 270,768 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,880 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,385 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,072 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,071 |
| German-Speaking Countries | 0 | - | 4.91 | 145,687 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,932 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,261 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,173 |
