| Countries of the World Quiz | 0 | - | 5.00 | 47,567,520 |
| Landlocked Countries | 0 | - | 4.99 | 421,765 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,410 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,350 |
| Himalayan Countries | 0 | - | 4.95 | 138,633 |
| Andean Countries | 0 | - | 4.93 | 84,557 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,748 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,749 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,382 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,767 |
| Danube Countries | 0 | - | 4.97 | 71,985 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,990 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,401 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,263 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,738 |
| European Landlocked Countries | 0 | - | 4.99 | 147,123 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,600 |
| Countries with the Most Species | 0 | - | 4.99 | 103,219 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,727 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,575 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,713 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,524 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,210 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,637 |
| Countries in the Alps | 0 | - | 4.87 | 118,181 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,978 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,000 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,631 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,579 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,484 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,934 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,656 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,470 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,168 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,825 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,641 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,507 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,203 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,450 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,500 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,851 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,291 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,497 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,040 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,827 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,045 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,210 |
| Largest Countries By Category | 0 | - | 4.97 | 158,182 |
| Countries by Countries | 0 | - | 4.96 | 63,194 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,660 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,276 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,558 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,659 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,420 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,451 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,081 |
| Island Countries | 0 | - | 4.99 | 710,970 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,622 |
| Northernmost Countries | 0 | - | 4.99 | 361,870 |
| Countries of South America | 0 | - | 5.00 | 927,135 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,559 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,714 |
| "Land" Countries | 0 | - | 4.98 | 337,278 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,171 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,831 |
| Countries with Megacities | 0 | - | 4.99 | 264,430 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,695 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,445 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,955 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,509 |
| Countries by Official Language | 0 | - | 4.95 | 195,209 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,308 |
| Countries in their Native Language | 0 | - | 4.99 | 199,004 |
| Independence from Whom | 0 | - | 4.99 | 212,048 |
| Subdivisions by Country | 0 | - | 4.86 | 50,423 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,692 |
| Megadiverse Countries | 0 | - | 4.96 | 134,998 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,051 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,338 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,227 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,095 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,103 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,583 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,437 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,019 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,635 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,135 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,648 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,865 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,195 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,951 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,341 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,481 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,129 |
| World Map Quiz | 0 | - | 4.81 | 65,051 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,195 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,338 |
| Countries by Founding Story | 0 | - | 4.95 | 77,350 |
| Countries by Road Signs | 0 | - | 4.98 | 53,994 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,047 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,258 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,976 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,135 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,871 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,991 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,282 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,431 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,560 |
| Widest Countries East to West | 0 | - | 4.92 | 129,627 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,448 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,355 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,114 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,758 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,575 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,850 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,368 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Countries with Double Letters | 0 | - | 4.96 | 96,185 |
| Countries that End in N | 0 | - | 4.95 | 171,063 |
| Countries with Five Letters | 0 | - | 4.96 | 282,349 |
| Countries with Six Letters | 0 | - | 4.94 | 213,492 |
| Countries with W | 0 | - | 4.97 | 160,287 |
| Countries with Z | 0 | - | 4.98 | 291,386 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,652 |
| Countries That End in U | 0 | - | 4.95 | 120,825 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,414 |
| Countries that End in O | 0 | - | 4.92 | 159,494 |
| Countries that End in R | 0 | - | 4.87 | 118,953 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,712 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,032 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,660 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,450 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,364 |
| Countries That End in Y | 0 | - | 4.91 | 185,858 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,876 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,824 |
| Countries that End in I | 0 | - | 4.94 | 135,072 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,050 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,808 |
| Countries That End in NIA | 0 | - | 4.92 | 109,764 |
| Countries That End in BIA | 0 | - | 4.93 | 149,167 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,080 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,402 |
| Countries That End in RIA | 0 | - | 4.93 | 126,793 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,994 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,529 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,665 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,070 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,626 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,561 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,997 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,436 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,504 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,404 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,258 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,955 |
| Countries that End in L | 0 | - | 4.94 | 156,815 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,623 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,257 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,006 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,939 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,976 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,697 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,623 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,963 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,508 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,393 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,842 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,086 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,699 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,857 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,854 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,888 |
| One Border Countries | 0 | - | 4.98 | 469,762 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,107 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,195 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,454 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,894 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,145 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,116 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,541 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,714 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,201 |
| Countries by National Anthem | 0 | - | 4.93 | 71,285 |
| NATO Countries | 0 | - | 4.98 | 281,412 |
| EU Countries Quiz | 0 | - | 4.99 | 275,351 |
| Recently Independent Countries | 0 | - | 4.98 | 159,447 |
| French-Speaking Countries | 0 | - | 4.85 | 270,805 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,889 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,464 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,196 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,273 |
| German-Speaking Countries | 0 | - | 4.91 | 145,721 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,950 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,271 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,254 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,140 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,824 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,999 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,507 |
