| Landlocked Countries | 0 | - | 4.99 | 420,299 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,444,809 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,626 |
| Himalayan Countries | 0 | - | 4.95 | 138,027 |
| Andean Countries | 0 | - | 4.95 | 84,223 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,447 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,245 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,092 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,530 |
| Danube Countries | 0 | - | 4.97 | 71,807 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,751 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,197 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,928 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,330 |
| European Landlocked Countries | 0 | - | 4.99 | 146,944 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,340 |
| Countries with the Most Species | 0 | - | 4.99 | 103,070 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,504 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,492 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,648 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,430 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,111 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,495 |
| Countries in the Alps | 0 | - | 4.87 | 117,935 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 98,981 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,661 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,535 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,429 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,279 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,822 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,451 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,318 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,064 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,683 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,555 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,412 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,053 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,332 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,346 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,488 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,160 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,671 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,784 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,077 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,619 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,091 |
| Largest Countries By Category | 0 | - | 4.97 | 157,893 |
| Countries by Countries | 0 | - | 4.97 | 62,991 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,438 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,212 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,486 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,431 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,135 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,996 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,132 |
| Island Countries | 0 | - | 4.99 | 710,312 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,658 |
| Northernmost Countries | 0 | - | 4.99 | 361,139 |
| Countries of South America | 0 | - | 5.00 | 924,840 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,710 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,353 |
| "Land" Countries | 0 | - | 4.98 | 336,143 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,202 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,422 |
| Countries with Megacities | 0 | - | 4.99 | 263,205 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,254 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,223 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,550 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,254 |
| Countries by Official Language | 0 | - | 4.95 | 194,903 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,900 |
| Countries in their Native Language | 0 | - | 4.99 | 198,434 |
| Independence from Whom | 0 | - | 4.99 | 211,677 |
| Subdivisions by Country | 0 | - | 4.86 | 50,350 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,948 |
| Megadiverse Countries | 0 | - | 4.96 | 134,869 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,764 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,250 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,056 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,892 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,466 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,192 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,928 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,555 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,032 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,318 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,086 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,857 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,247 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,407 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,603 |
| World Map Quiz | 0 | - | 4.81 | 64,840 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,328 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,174 |
| Countries by Founding Story | 0 | - | 4.95 | 77,203 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,754 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,076 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,812 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,731 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,693 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,832 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,956 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,344 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,420 |
| Widest Countries East to West | 0 | - | 4.92 | 129,489 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,145 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,053 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,630 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,398 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,693 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,305 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,758 |
| Countries with Double Letters | 0 | - | 4.97 | 95,360 |
| Countries that End in N | 0 | - | 4.95 | 170,395 |
| Countries with Five Letters | 0 | - | 4.96 | 281,291 |
| Countries with Six Letters | 0 | - | 4.94 | 212,806 |
| Countries with W | 0 | - | 4.97 | 159,708 |
| Countries with Z | 0 | - | 4.98 | 290,616 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,976 |
| Countries That End in U | 0 | - | 4.95 | 120,515 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,988 |
| Countries that End in O | 0 | - | 4.92 | 159,285 |
| Countries that End in R | 0 | - | 4.87 | 118,804 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,570 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,588 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,319 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,215 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,828 |
| Countries That End in Y | 0 | - | 4.91 | 185,718 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,524 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,601 |
| Countries that End in I | 0 | - | 4.94 | 134,948 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,715 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,665 |
| Countries That End in NIA | 0 | - | 4.92 | 109,621 |
| Countries That End in BIA | 0 | - | 4.93 | 148,975 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,881 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,199 |
| Countries That End in RIA | 0 | - | 4.93 | 126,638 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,773 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,079 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,406 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,794 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,333 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,413 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,794 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,358 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,294 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,287 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,993 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,711 |
| Countries that End in L | 0 | - | 4.94 | 156,649 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,751 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,189 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,910 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,822 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,869 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,361 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,382 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,802 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,321 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,822 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,707 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,015 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,640 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,759 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,435 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,269 |
| One Border Countries | 0 | - | 4.98 | 468,530 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,278 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,269 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,708 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,758 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,875 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,383 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,526 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,069 |
| Countries by National Anthem | 0 | - | 4.92 | 71,232 |
| NATO Countries | 0 | - | 4.98 | 280,292 |
| EU Countries Quiz | 0 | - | 4.99 | 274,090 |
| Recently Independent Countries | 0 | - | 4.98 | 159,210 |
| French-Speaking Countries | 0 | - | 4.85 | 270,476 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,814 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,004 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,266 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,064 |
| German-Speaking Countries | 0 | - | 4.92 | 145,539 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,794 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,157 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,698 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,367 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,335 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,580 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,812 |
| Olympic Host Countries | 0 | - | 4.98 | 200,710 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,815 |
