| Countries of the World Quiz | 0 | - | 5.00 | 46,961,667 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,552 |
| Landlocked Countries | 0 | - | 4.99 | 414,125 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,322 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,905 |
| Countries with Glaciers | 0 | - | 4.97 | 104,700 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,677 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,270 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,209 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,790 |
| Himalayan Countries | 0 | - | 4.95 | 135,527 |
| Andean Countries | 0 | - | 4.94 | 82,924 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,292 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,319 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,990 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,668 |
| Danube Countries | 0 | - | 4.97 | 71,124 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,828 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,589 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,593 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,495 |
| European Landlocked Countries | 0 | - | 4.99 | 145,818 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,284 |
| Countries with the Most Species | 0 | - | 4.99 | 95,275 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,432 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,216 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,384 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,985 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,611 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,994 |
| Countries in the Alps | 0 | - | 4.86 | 116,913 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,627 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,351 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,468 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,237 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,046 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,638 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,807 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,491 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,108 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,210 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,073 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,486 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,799 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,788 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,177 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,696 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,285 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,844 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,566 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,845 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,631 |
| Largest Countries By Category | 0 | - | 4.97 | 156,851 |
| Countries by Countries | 0 | - | 4.96 | 62,312 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,486 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,980 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,347 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,822 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,662 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,310 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,125 |
| Island Countries | 0 | - | 4.99 | 707,812 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,161 |
| Northernmost Countries | 0 | - | 4.99 | 358,004 |
| Countries of South America | 0 | - | 5.00 | 915,709 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,723 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,243 |
| "Land" Countries | 0 | - | 4.98 | 333,779 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,772 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,549 |
| Countries with Megacities | 0 | - | 4.99 | 247,425 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,381 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,159 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,811 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,069 |
| Countries by Official Language | 0 | - | 4.95 | 192,883 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,282 |
| Countries in their Native Language | 0 | - | 4.99 | 196,737 |
| Independence from Whom | 0 | - | 4.99 | 209,829 |
| Subdivisions by Country | 0 | - | 4.86 | 50,090 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,854 |
| Megadiverse Countries | 0 | - | 4.97 | 133,947 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,911 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,944 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,454 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,730 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,038 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,137 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,196 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,238 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,755 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,693 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,449 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,533 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,527 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,714 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,049 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,715 |
| World Map Quiz | 0 | - | 4.81 | 63,605 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,977 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,391 |
| Countries by Founding Story | 0 | - | 4.95 | 76,594 |
| Countries by Road Signs | 0 | - | 4.98 | 53,155 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,467 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,201 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,999 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,913 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,916 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,109 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,321 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,974 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,371 |
| Widest Countries East to West | 0 | - | 4.92 | 128,653 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,222 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,292 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,593 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,725 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,678 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,104 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,064 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,599 |
| Countries with Double Letters | 0 | - | 4.96 | 93,473 |
| Countries that End in N | 0 | - | 4.94 | 156,969 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,780 |
| Countries with Six Letters | 0 | - | 4.93 | 210,448 |
| Countries with W | 0 | - | 4.97 | 158,289 |
| Countries with Z | 0 | - | 4.98 | 287,987 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,614 |
| Countries That End in U | 0 | - | 4.95 | 119,547 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,675 |
| Countries that End in O | 0 | - | 4.92 | 158,589 |
| Countries that End in R | 0 | - | 4.87 | 118,302 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,878 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,187 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,407 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,544 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,083 |
| Countries That End in Y | 0 | - | 4.90 | 185,230 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,461 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,759 |
| Countries that End in I | 0 | - | 4.94 | 134,462 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,289 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,236 |
| Countries That End in NIA | 0 | - | 4.92 | 109,048 |
| Countries That End in BIA | 0 | - | 4.92 | 147,757 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,134 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,538 |
| Countries That End in RIA | 0 | - | 4.93 | 126,120 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,062 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,287 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,558 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,937 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,423 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,955 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,171 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,698 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,561 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,838 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,208 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,871 |
| Countries that End in L | 0 | - | 4.94 | 155,789 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,532 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,998 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,549 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,345 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,463 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,457 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,307 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 135,559 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,389 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,677 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,706 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,708 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,185 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,436 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,353 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,976 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,878 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,803,308 |
| One Border Countries | 0 | - | 4.98 | 464,782 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,590,486 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,391 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,962 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,187 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,992 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,546 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,755 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,372 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,775 |
| Countries by National Anthem | 0 | - | 4.93 | 71,044 |
| NATO Countries | 0 | - | 4.98 | 276,202 |
| EU Countries Quiz | 0 | - | 4.99 | 270,245 |
| Recently Independent Countries | 0 | - | 4.98 | 158,054 |
| French-Speaking Countries | 0 | - | 4.85 | 268,953 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,397 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,180 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,195 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,702 |
