| Landlocked Countries | 0 | - | 4.99 | 420,461 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,454,853 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,686 |
| Himalayan Countries | 0 | - | 4.95 | 138,070 |
| Andean Countries | 0 | - | 4.95 | 84,254 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,477 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,307 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,111 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,554 |
| Danube Countries | 0 | - | 4.97 | 71,826 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,784 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,229 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,958 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,407 |
| European Landlocked Countries | 0 | - | 4.99 | 146,960 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,370 |
| Countries with the Most Species | 0 | - | 4.99 | 103,086 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,527 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,500 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,658 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,441 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,113 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,501 |
| Countries in the Alps | 0 | - | 4.87 | 117,953 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,320 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,693 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,545 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,446 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,300 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,831 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,464 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,336 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,070 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,700 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,563 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,418 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,066 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,345 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,361 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,520 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,177 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,685 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,817 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,146 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,656 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,104 |
| Largest Countries By Category | 0 | - | 4.97 | 157,921 |
| Countries by Countries | 0 | - | 4.97 | 63,007 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,459 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,213 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,507 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,064 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,800 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,499 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,269 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,237 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,029 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,194 |
| Island Countries | 0 | - | 4.99 | 710,363 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,802 |
| Northernmost Countries | 0 | - | 4.99 | 361,203 |
| Countries of South America | 0 | - | 5.00 | 924,996 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,929 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,748 |
| "Land" Countries | 0 | - | 4.98 | 336,296 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,521 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,452 |
| Countries with Megacities | 0 | - | 4.99 | 263,361 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,291 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,239 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,586 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,278 |
| Countries by Official Language | 0 | - | 4.95 | 194,926 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,938 |
| Countries in their Native Language | 0 | - | 4.99 | 198,450 |
| Independence from Whom | 0 | - | 4.99 | 211,703 |
| Subdivisions by Country | 0 | - | 4.86 | 50,360 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,980 |
| Megadiverse Countries | 0 | - | 4.96 | 134,879 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,787 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,255 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,844 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,059 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,905 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,477 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,215 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,934 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,563 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,040 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,334 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,794 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,092 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,866 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,413 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,655 |
| World Map Quiz | 0 | - | 4.81 | 64,858 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,399 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,193 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,936 |
| Countries by Founding Story | 0 | - | 4.95 | 77,217 |
| Countries by Road Signs | 0 | - | 4.98 | 53,825 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,774 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,087 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,827 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,763 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,711 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,847 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,063 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,350 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,431 |
| Widest Countries East to West | 0 | - | 4.92 | 129,499 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,161 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,061 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,639 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,406 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,700 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,310 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,389 |
| Countries that End in N | 0 | - | 4.95 | 170,428 |
| Countries with Five Letters | 0 | - | 4.96 | 281,362 |
| Countries with Six Letters | 0 | - | 4.94 | 212,837 |
| Countries with W | 0 | - | 4.97 | 159,728 |
| Countries with Z | 0 | - | 4.98 | 290,641 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,990 |
| Countries That End in U | 0 | - | 4.95 | 120,526 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,010 |
| Countries that End in O | 0 | - | 4.92 | 159,291 |
| Countries that End in R | 0 | - | 4.87 | 118,809 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,580 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,620 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,334 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,224 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,840 |
| Countries That End in Y | 0 | - | 4.91 | 185,729 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,541 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,622 |
| Countries that End in I | 0 | - | 4.94 | 134,960 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,738 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,672 |
| Countries That End in NIA | 0 | - | 4.92 | 109,632 |
| Countries That End in BIA | 0 | - | 4.93 | 148,986 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,883 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,211 |
| Countries That End in RIA | 0 | - | 4.93 | 126,652 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,781 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,110 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,425 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,812 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,346 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,419 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,802 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,361 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,302 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,288 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,008 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,721 |
| Countries that End in L | 0 | - | 4.94 | 156,662 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,806 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,193 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,914 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,825 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,880 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,428 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,405 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,811 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,344 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,844 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,721 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,017 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,643 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,764 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,635 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,324 |
| One Border Countries | 0 | - | 4.98 | 468,582 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,373 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,828 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,977 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,719 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,795 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,901 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,390 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,535 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,081 |
| Countries by National Anthem | 0 | - | 4.93 | 71,241 |
| NATO Countries | 0 | - | 4.98 | 280,389 |
| EU Countries Quiz | 0 | - | 4.99 | 274,207 |
| Recently Independent Countries | 0 | - | 4.98 | 159,236 |
| French-Speaking Countries | 0 | - | 4.85 | 270,498 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,824 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,032 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,347 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,166 |
| German-Speaking Countries | 0 | - | 4.92 | 145,549 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,813 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,168 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,726 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,475 |
