| Landlocked Countries | 0 | - | 4.99 | 416,406 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,143,754 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,812 |
| Himalayan Countries | 0 | - | 4.95 | 136,396 |
| Andean Countries | 0 | - | 4.95 | 83,427 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,698 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,921 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,377 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,982 |
| Danube Countries | 0 | - | 4.97 | 71,372 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,173 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,832 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,107 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,058 |
| European Landlocked Countries | 0 | - | 4.99 | 146,101 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,717 |
| Countries with the Most Species | 0 | - | 4.99 | 100,841 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,858 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,315 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,494 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,134 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,791 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,164 |
| Countries in the Alps | 0 | - | 4.86 | 117,297 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,876 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,831 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,235 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,719 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,790 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,230 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,958 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,977 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,784 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,312 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,341 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,195 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,701 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,976 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,989 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,662 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,874 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,411 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,208 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,863 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,503 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,804 |
| Largest Countries By Category | 0 | - | 4.97 | 157,219 |
| Countries by Countries | 0 | - | 4.96 | 62,569 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,847 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,072 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,406 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,632 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,369 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,064 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,853 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,625 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,722 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,583 |
| Island Countries | 0 | - | 4.99 | 708,737 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,037 |
| Northernmost Countries | 0 | - | 4.99 | 359,240 |
| Countries of South America | 0 | - | 5.00 | 919,328 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,224 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,835 |
| "Land" Countries | 0 | - | 4.98 | 334,477 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,828 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,210 |
| Countries with Megacities | 0 | - | 4.99 | 248,800 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,059 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,513 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,430 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,459 |
| Countries by Official Language | 0 | - | 4.95 | 193,936 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,438 |
| Countries in their Native Language | 0 | - | 4.99 | 197,559 |
| Independence from Whom | 0 | - | 4.99 | 210,657 |
| Subdivisions by Country | 0 | - | 4.86 | 50,188 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,277 |
| Megadiverse Countries | 0 | - | 4.96 | 134,520 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,767 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,071 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,618 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,943 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,415 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,201 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,531 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,527 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,355 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,802 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,124 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,571 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,673 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,632 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,840 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,185 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,466 |
| World Map Quiz | 0 | - | 4.81 | 64,025 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,226 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,667 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,479 |
| Countries by Founding Story | 0 | - | 4.95 | 76,844 |
| Countries by Road Signs | 0 | - | 4.98 | 53,383 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,013 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,636 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,370 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,633 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,231 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,430 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,601 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,132 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,621 |
| Widest Countries East to West | 0 | - | 4.92 | 129,122 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,320 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,618 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,902 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,936 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,958 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,334 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,055 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,664 |
| Countries with Double Letters | 0 | - | 4.96 | 93,988 |
| Countries that End in N | 0 | - | 4.94 | 163,159 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,415 |
| Countries with Six Letters | 0 | - | 4.93 | 210,999 |
| Countries with W | 0 | - | 4.97 | 158,689 |
| Countries with Z | 0 | - | 4.98 | 288,608 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,954 |
| Countries That End in U | 0 | - | 4.95 | 119,823 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,085 |
| Countries that End in O | 0 | - | 4.92 | 158,796 |
| Countries that End in R | 0 | - | 4.87 | 118,469 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,004 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,658 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,692 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,770 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,340 |
| Countries That End in Y | 0 | - | 4.90 | 185,379 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,784 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,041 |
| Countries that End in I | 0 | - | 4.94 | 134,635 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,652 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,385 |
| Countries That End in NIA | 0 | - | 4.92 | 109,270 |
| Countries That End in BIA | 0 | - | 4.93 | 148,510 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,389 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,740 |
| Countries That End in RIA | 0 | - | 4.93 | 126,310 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,294 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,012 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,818 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,165 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,734 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,117 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,401 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,918 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,801 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,979 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,481 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,156 |
| Countries that End in L | 0 | - | 4.94 | 156,251 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,757 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,050 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,700 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,545 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,603 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,262 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,782 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,263 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,791 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,211 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,026 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,860 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,283 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,504 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,495 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,550 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,750 |
| One Border Countries | 0 | - | 4.98 | 466,287 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,047 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,365 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,938 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,253 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,849 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,296 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,062 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,067 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,611 |
| Countries by National Anthem | 0 | - | 4.92 | 71,108 |
| NATO Countries | 0 | - | 4.98 | 277,927 |
| EU Countries Quiz | 0 | - | 4.99 | 271,467 |
| Recently Independent Countries | 0 | - | 4.98 | 158,344 |
| French-Speaking Countries | 0 | - | 4.85 | 269,693 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,482 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,852 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,242 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,222 |
| German-Speaking Countries | 0 | - | 4.91 | 142,997 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,998 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,617 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,292 |
