| City to Country Quiz #1 | 0 | - | 4.96 | 157,920 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,191 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,576 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,009,888 |
| Historical City to Country | 0 | - | 4.85 | 79,123 |
| Landlocked Countries | 0 | - | 4.99 | 427,747 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,907 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,149 |
| Himalayan Countries | 0 | - | 4.93 | 141,035 |
| Andean Countries | 0 | - | 4.94 | 85,908 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,019 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,643 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,565 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,767 |
| Danube Countries | 0 | - | 4.97 | 72,613 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,878 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,026 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,543 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,020 |
| European Landlocked Countries | 0 | - | 4.99 | 147,826 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,612 |
| Countries with the Most Species | 0 | - | 4.99 | 103,674 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,719 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,835 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,976 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,964 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,710 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,178 |
| Countries in the Alps | 0 | - | 4.87 | 119,056 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,134 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,263 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,095 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,222 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,196 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,428 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,648 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,038 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,541 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,354 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,983 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,853 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,709 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,964 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,066 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,271 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,771 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,798 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,909 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,584 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,646 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,645 |
| Largest Countries By Category | 0 | - | 4.97 | 159,199 |
| Countries by Countries | 0 | - | 4.97 | 63,860 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,530 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,460 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,720 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,639 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,607 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,299 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,074 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,197 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,667 |
| Island Countries | 0 | - | 4.99 | 713,232 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,778 |
| Northernmost Countries | 0 | - | 4.99 | 364,855 |
| Countries of South America | 0 | - | 5.00 | 934,975 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,376 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,843 |
| "Land" Countries | 0 | - | 4.98 | 339,186 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,608 |
| City to Country Quiz #2 | 0 | - | 4.80 | 109,683 |
| City to Country Quiz #4 | 0 | - | 4.56 | 95,370 |
| City to Country Quiz #5 | 0 | - | 4.74 | 82,070 |
| City to Country Quiz #6 | 0 | - | 4.56 | 66,419 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,669 |
| Countries with Megacities | 0 | - | 4.99 | 268,198 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,307 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,416 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,647 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,534 |
| Countries by Official Language | 0 | - | 4.95 | 196,339 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,094 |
| Countries in their Native Language | 0 | - | 4.99 | 200,051 |
| Independence from Whom | 0 | - | 4.99 | 213,551 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,760 |
| Megadiverse Countries | 0 | - | 4.96 | 149,796 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,223 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,596 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,855 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,273 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,557 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,964 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,382 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,660 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,219 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,301 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,908 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,522 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,532 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,252 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,676 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,016 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,908 |
| World Map Quiz | 0 | - | 4.81 | 65,985 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,196 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,865 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,801 |
| Countries by Founding Story | 0 | - | 4.95 | 77,952 |
| Countries by Road Signs | 0 | - | 4.98 | 54,501 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,644 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,299 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,766 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,079 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,619 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,739 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,907 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,788 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,018 |
| Widest Countries East to West | 0 | - | 4.92 | 130,909 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,475 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,589 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,202 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,499 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,658 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,793 |
| Countries that End in N | 0 | - | 4.95 | 172,788 |
| Countries with Five Letters | 0 | - | 4.96 | 284,849 |
| Countries with Six Letters | 0 | - | 4.94 | 215,125 |
| Countries with W | 0 | - | 4.96 | 161,432 |
| Countries with Z | 0 | - | 4.98 | 293,182 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,806 |
| Countries That End in U | 0 | - | 4.95 | 121,458 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,553 |
| Countries that End in O | 0 | - | 4.92 | 160,424 |
| Countries that End in R | 0 | - | 4.87 | 119,316 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,090 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,268 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,695 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,302 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,978 |
| Countries That End in Y | 0 | - | 4.91 | 186,208 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,524 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,488 |
| Countries that End in I | 0 | - | 4.94 | 135,462 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,459 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,184 |
| Countries That End in NIA | 0 | - | 4.92 | 110,199 |
| Countries That End in BIA | 0 | - | 4.93 | 149,794 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,006 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,953 |
| Countries That End in RIA | 0 | - | 4.93 | 127,200 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,596 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,081 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,471 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,931 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,488 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,960 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,522 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,625 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,121 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,773 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,977 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,691 |
| Countries that End in L | 0 | - | 4.94 | 157,298 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,829 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,394 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,764 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,385 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,573 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,479 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,274 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,366 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,313 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,986 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,895 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,393 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,886 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,224 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,855,690 |
| One Border Countries | 0 | - | 4.98 | 472,872 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,569 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,785 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,107 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,516 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,632 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,894 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,276 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,432 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,768 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,710 |
| Countries by National Anthem | 0 | - | 4.92 | 71,450 |
| NATO Countries | 0 | - | 4.98 | 284,286 |
| EU Countries Quiz | 0 | - | 4.99 | 279,198 |
| Recently Independent Countries | 0 | - | 4.98 | 160,590 |
| French-Speaking Countries | 0 | - | 4.85 | 272,006 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,277 |
