| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,349 |
| Countries of South America | 0 | - | 5.00 | 922,804 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,869 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,095 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,328,627 |
| Landlocked Countries | 0 | - | 4.99 | 418,855 |
| Countries with Four Letters | 0 | - | 4.99 | 421,547 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,967 |
| Himalayan Countries | 0 | - | 4.94 | 137,390 |
| Andean Countries | 0 | - | 4.95 | 83,916 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,213 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,627 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,820 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,342 |
| Danube Countries | 0 | - | 4.97 | 71,650 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,537 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,047 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,631 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,716 |
| European Landlocked Countries | 0 | - | 4.99 | 146,770 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,124 |
| Countries with the Most Species | 0 | - | 4.99 | 102,900 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,259 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,429 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,584 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,294 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,981 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,356 |
| Countries in the Alps | 0 | - | 4.87 | 117,679 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,123 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,353 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,406 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,976 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,082 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,488 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,273 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,179 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,962 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,546 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,474 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,335 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,916 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,180 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,201 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,159 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,058 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,567 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,509 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,327 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,205 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,992 |
| Largest Countries By Category | 0 | - | 4.97 | 157,623 |
| Countries by Countries | 0 | - | 4.96 | 62,830 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,199 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,157 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,466 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,314 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,633 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,662 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,281 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,183 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 139,469 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,973 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,901 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,579 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,055 |
| Island Countries | 0 | - | 4.99 | 709,716 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,958 |
| Northernmost Countries | 0 | - | 4.99 | 360,423 |
| "Land" Countries | 0 | - | 4.98 | 335,777 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,533 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,373 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,000 |
| Countries with Megacities | 0 | - | 4.99 | 259,338 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,863 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,978 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,152 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,980 |
| Countries by Official Language | 0 | - | 4.95 | 194,629 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,509 |
| Countries in their Native Language | 0 | - | 4.99 | 198,170 |
| Independence from Whom | 0 | - | 4.99 | 211,287 |
| Subdivisions by Country | 0 | - | 4.86 | 50,285 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,688 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,535 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,180 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,749 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,014 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,703 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,377 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,964 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,838 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,477 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,986 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,935 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,708 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,989 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,769 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,145 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,321 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,167 |
| World Map Quiz | 0 | - | 4.81 | 64,504 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,559 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,024 |
| Countries by Founding Story | 0 | - | 4.95 | 77,057 |
| Countries by Road Signs | 0 | - | 4.98 | 53,648 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,484 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,921 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,631 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,309 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,513 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,666 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,820 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,258 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,276 |
| Widest Countries East to West | 0 | - | 4.92 | 129,364 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,380 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,950 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,506 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,213 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,538 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,229 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,074 |
| Countries that End in N | 0 | - | 4.95 | 169,968 |
| Countries with Five Letters | 0 | - | 4.96 | 280,120 |
| Countries with Six Letters | 0 | - | 4.94 | 212,461 |
| Countries with W | 0 | - | 4.97 | 159,513 |
| Countries with Z | 0 | - | 4.98 | 289,784 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,725 |
| Countries That End in U | 0 | - | 4.95 | 120,405 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,738 |
| Countries that End in O | 0 | - | 4.92 | 159,190 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,507 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,315 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,094 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,073 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,658 |
| Countries That End in Y | 0 | - | 4.90 | 185,646 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,219 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,411 |
| Countries that End in I | 0 | - | 4.94 | 134,862 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,067 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,572 |
| Countries That End in NIA | 0 | - | 4.92 | 109,511 |
| Countries That End in BIA | 0 | - | 4.93 | 148,837 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,703 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,051 |
| Countries That End in RIA | 0 | - | 4.93 | 126,528 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,613 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,663 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,212 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,567 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,101 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,316 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,680 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,231 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,114 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,188 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,815 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,527 |
| Countries that End in L | 0 | - | 4.94 | 156,536 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,971 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,831 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,718 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,773 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,770 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,157 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,611 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,117 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,608 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,580 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,951 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,595 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,657 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,151 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,702 |
| One Border Countries | 0 | - | 4.98 | 467,646 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,331 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,681 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,512 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,281 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,551 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,412 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,673 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,261 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,368 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,924 |
| Countries by National Anthem | 0 | - | 4.93 | 71,181 |
| NATO Countries | 0 | - | 4.98 | 279,305 |
| EU Countries Quiz | 0 | - | 4.99 | 272,901 |
| Recently Independent Countries | 0 | - | 4.98 | 159,004 |
| French-Speaking Countries | 0 | - | 4.85 | 270,193 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,756 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,558 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,444 |
