| Countries of the World Quiz | 0 | - | 5.00 | 46,854,785 |
| Countries of Africa | 0 | - | 5.00 | 2,504,455 |
| Landlocked Countries | 0 | - | 4.99 | 412,916 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,092 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,253 |
| Himalayan Countries | 0 | - | 4.95 | 135,068 |
| Andean Countries | 0 | - | 4.94 | 82,674 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,089 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,003 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,767 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,475 |
| Danube Countries | 0 | - | 4.97 | 71,004 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,640 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,460 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,295 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,207 |
| European Landlocked Countries | 0 | - | 4.99 | 145,671 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,057 |
| Countries with the Most Species | 0 | - | 4.99 | 95,191 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,204 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,175 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,334 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,910 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,515 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,871 |
| Countries in the Alps | 0 | - | 4.87 | 116,691 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,478 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,089 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,946 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,330 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,072 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,940 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,478 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,686 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,835 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,973 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,166 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,000 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,365 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,676 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,678 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,872 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,573 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,203 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,675 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,855 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,389 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,545 |
| Largest Countries By Category | 0 | - | 4.97 | 156,624 |
| Countries by Countries | 0 | - | 4.96 | 62,170 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,227 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,935 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,306 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,662 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,062 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,846 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,016 |
| Island Countries | 0 | - | 4.99 | 707,252 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,398 |
| Northernmost Countries | 0 | - | 4.99 | 357,271 |
| Countries of South America | 0 | - | 5.00 | 913,446 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,707 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,300 |
| "Land" Countries | 0 | - | 4.98 | 333,431 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,159 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,873 |
| Countries with Megacities | 0 | - | 4.99 | 246,210 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,790 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,740 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,260 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,678 |
| Countries by Official Language | 0 | - | 4.95 | 192,594 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,883 |
| Countries in their Native Language | 0 | - | 4.99 | 196,480 |
| Independence from Whom | 0 | - | 4.99 | 209,480 |
| Subdivisions by Country | 0 | - | 4.86 | 50,034 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,586 |
| Megadiverse Countries | 0 | - | 4.97 | 133,834 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,657 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,876 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,373 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,836 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,548 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,940 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,594 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,063 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,179 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,716 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,391 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,366 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,432 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,447 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,608 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,979 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,358 |
| World Map Quiz | 0 | - | 4.81 | 63,360 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,231 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,224 |
| Countries by Founding Story | 0 | - | 4.95 | 76,448 |
| Countries by Road Signs | 0 | - | 4.98 | 52,978 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,162 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,882 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,856 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,516 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,773 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,967 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,174 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,881 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,260 |
| Widest Countries East to West | 0 | - | 4.92 | 128,527 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,083 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,520 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,627 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,522 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,950 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,032 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,552 |
| Countries with Double Letters | 0 | - | 4.97 | 93,223 |
| Countries that End in N | 0 | - | 4.94 | 156,289 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,497 |
| Countries with Six Letters | 0 | - | 4.93 | 210,197 |
| Countries with W | 0 | - | 4.97 | 158,102 |
| Countries with Z | 0 | - | 4.98 | 287,450 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,431 |
| Countries That End in U | 0 | - | 4.95 | 119,448 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,356 |
| Countries that End in O | 0 | - | 4.92 | 158,480 |
| Countries that End in R | 0 | - | 4.86 | 118,210 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,812 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,867 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,187 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,383 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,569 |
| Countries That End in Y | 0 | - | 4.90 | 185,155 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,179 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,554 |
| Countries that End in I | 0 | - | 4.94 | 134,316 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,024 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,146 |
| Countries That End in NIA | 0 | - | 4.92 | 108,934 |
| Countries That End in BIA | 0 | - | 4.92 | 147,614 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,975 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,411 |
| Countries That End in RIA | 0 | - | 4.93 | 126,013 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,922 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,985 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,435 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,813 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,247 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,870 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,032 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,555 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,394 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,768 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,016 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,688 |
| Countries that End in L | 0 | - | 4.94 | 155,644 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,688 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,965 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,459 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,227 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,368 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,255 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,946 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,834 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,056 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,248 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,438 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,567 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,144 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,391 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,258 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,546 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,109 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,797,555 |
| One Border Countries | 0 | - | 4.98 | 463,611 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,759 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,583 |
| One Country By Letter By Continent | 0 | - | 5.00 | 121,375 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,729 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,704 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,755 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,404 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,493 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,154 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,019 |
| Countries by National Anthem | 0 | - | 4.92 | 70,999 |
| NATO Countries | 0 | - | 4.98 | 275,136 |
| EU Countries Quiz | 0 | - | 4.99 | 269,448 |
| Recently Independent Countries | 0 | - | 4.98 | 157,868 |
| French-Speaking Countries | 0 | - | 4.85 | 268,617 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,332 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,738 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,505 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,686 |
| German-Speaking Countries | 0 | - | 4.89 | 123,475 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,357 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,540 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,265 |
