| City to Country Quiz #1 | 0 | - | 4.97 | 156,125 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,050 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,099 |
| Landlocked Countries | 0 | - | 4.99 | 423,379 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,696,353 |
| Historical City to Country | 0 | - | 4.85 | 78,730 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,166 |
| Himalayan Countries | 0 | - | 4.94 | 139,360 |
| Andean Countries | 0 | - | 4.94 | 84,949 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,170 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,334 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,736 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,051 |
| Danube Countries | 0 | - | 4.97 | 72,168 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,248 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,570 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,612 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,119 |
| European Landlocked Countries | 0 | - | 4.99 | 147,323 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,898 |
| Countries with the Most Species | 0 | - | 4.99 | 103,381 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,035 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,661 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,777 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,649 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,403 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,809 |
| Countries in the Alps | 0 | - | 4.87 | 118,428 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,916 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,362 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,784 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,765 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,673 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,069 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,864 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,638 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,271 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,989 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,741 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,612 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,354 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,602 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,676 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,260 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,435 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,992 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,293 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,712 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,526 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,340 |
| Largest Countries By Category | 0 | - | 4.97 | 158,473 |
| Countries by Countries | 0 | - | 4.96 | 63,398 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,929 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,335 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,603 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,835 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,788,763 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,856 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,963 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,251 |
| Island Countries | 0 | - | 4.99 | 711,577 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,753 |
| Northernmost Countries | 0 | - | 4.99 | 362,721 |
| Countries of South America | 0 | - | 5.00 | 929,376 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,422 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,845 |
| "Land" Countries | 0 | - | 4.98 | 337,738 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,575 |
| City to Country Quiz #4 | 0 | - | 4.61 | 84,261 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,170 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,608 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,370 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,335 |
| Countries with Megacities | 0 | - | 4.99 | 265,582 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,133 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,697 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,395 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,772 |
| Countries by Official Language | 0 | - | 4.95 | 195,540 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,797 |
| Countries in their Native Language | 0 | - | 4.99 | 199,324 |
| Independence from Whom | 0 | - | 4.99 | 212,437 |
| Subdivisions by Country | 0 | - | 4.87 | 50,505 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,983 |
| Megadiverse Countries | 0 | - | 4.96 | 135,123 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,344 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,435 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,319 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,151 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,319 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,675 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,664 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,442 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,726 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,195 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,992 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,984 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,298 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,036 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,457 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,578 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,676 |
| World Map Quiz | 0 | - | 4.81 | 65,302 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,012 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,496 |
| Countries by Founding Story | 0 | - | 4.95 | 77,492 |
| Countries by Road Signs | 0 | - | 4.98 | 54,159 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,410 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,496 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,186 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,741 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,083 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,200 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,446 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,524 |
| Tallest Countries North to South | 0 | - | 4.83 | 122,658 |
| Widest Countries East to West | 0 | - | 4.92 | 129,856 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,490 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,942 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,410 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,873 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,755 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,018 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,428 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,831 |
| Countries with Double Letters | 0 | - | 4.96 | 96,569 |
| Countries that End in N | 0 | - | 4.95 | 171,467 |
| Countries with Five Letters | 0 | - | 4.96 | 283,050 |
| Countries with Six Letters | 0 | - | 4.94 | 213,912 |
| Countries with W | 0 | - | 4.96 | 160,569 |
| Countries with Z | 0 | - | 4.98 | 291,837 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,939 |
| Countries That End in U | 0 | - | 4.95 | 120,980 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,716 |
| Countries that End in O | 0 | - | 4.92 | 159,634 |
| Countries that End in R | 0 | - | 4.87 | 119,052 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,808 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,390 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,867 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,618 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,523 |
| Countries That End in Y | 0 | - | 4.91 | 185,966 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,127 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,024 |
| Countries that End in I | 0 | - | 4.94 | 135,192 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,300 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,905 |
| Countries That End in NIA | 0 | - | 4.92 | 109,873 |
| Countries That End in BIA | 0 | - | 4.93 | 149,350 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,277 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,565 |
| Countries That End in RIA | 0 | - | 4.93 | 126,914 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,158 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,971 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,904 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,329 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,882 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,660 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,151 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,478 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,665 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,524 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,456 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,152 |
| Countries that End in L | 0 | - | 4.94 | 156,960 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,462 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,300 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,015 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,863 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,265 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,008 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,658 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,010 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,156 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,747 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,078 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,531 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,527 |
| One Border Countries | 0 | - | 4.98 | 470,699 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,046 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,840,268 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,640,200 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,073 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,517 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,360 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,690 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,909 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,362 |
| Countries by National Anthem | 0 | - | 4.93 | 71,344 |
| NATO Countries | 0 | - | 4.98 | 282,235 |
| EU Countries Quiz | 0 | - | 4.99 | 276,401 |
| Recently Independent Countries | 0 | - | 4.98 | 159,655 |
| French-Speaking Countries | 0 | - | 4.85 | 271,193 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,959 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,067 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,044 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,368 |
| German-Speaking Countries | 0 | - | 4.92 | 145,870 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,065 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,370 |
