| City to Country Quiz #1 | 0 | - | 4.97 | 155,910 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,821 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,869 |
| Landlocked Countries | 0 | - | 4.99 | 420,283 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,443,987 |
| Historical City to Country | 0 | - | 4.84 | 78,530 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,624 |
| Himalayan Countries | 0 | - | 4.95 | 138,021 |
| Andean Countries | 0 | - | 4.95 | 84,223 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,441 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,234 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,091 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,529 |
| Danube Countries | 0 | - | 4.97 | 71,805 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,749 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,195 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,922 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,304 |
| European Landlocked Countries | 0 | - | 4.99 | 146,941 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,339 |
| Countries with the Most Species | 0 | - | 4.99 | 103,070 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,502 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,492 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,647 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,429 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,111 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,495 |
| Countries in the Alps | 0 | - | 4.87 | 117,933 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 98,947 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,661 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,534 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,428 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,278 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,822 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,448 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,318 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,064 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,683 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,554 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,410 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,052 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,332 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,346 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,487 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,158 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,670 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,782 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,069 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,616 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,088 |
| Largest Countries By Category | 0 | - | 4.97 | 157,889 |
| Countries by Countries | 0 | - | 4.97 | 62,989 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,437 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,210 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,484 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,382 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,120 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,991 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,130 |
| Island Countries | 0 | - | 4.99 | 710,306 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,648 |
| Northernmost Countries | 0 | - | 4.99 | 361,137 |
| Countries of South America | 0 | - | 5.00 | 924,831 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,701 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,333 |
| "Land" Countries | 0 | - | 4.98 | 336,139 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,396 |
| City to Country Quiz #4 | 0 | - | 4.56 | 84,139 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,024 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,484 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,173 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,418 |
| Countries with Megacities | 0 | - | 4.99 | 263,192 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,251 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,222 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,548 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,253 |
| Countries by Official Language | 0 | - | 4.95 | 194,902 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,898 |
| Countries in their Native Language | 0 | - | 4.99 | 198,433 |
| Independence from Whom | 0 | - | 4.99 | 211,674 |
| Subdivisions by Country | 0 | - | 4.86 | 50,349 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,947 |
| Megadiverse Countries | 0 | - | 4.96 | 134,869 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,762 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,248 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,056 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,891 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,465 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,192 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,926 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,554 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,032 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,317 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,085 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,857 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,247 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,407 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,601 |
| World Map Quiz | 0 | - | 4.81 | 64,839 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,321 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,174 |
| Countries by Founding Story | 0 | - | 4.95 | 77,203 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,752 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,074 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,811 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,730 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,691 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,830 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,956 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,343 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,420 |
| Widest Countries East to West | 0 | - | 4.92 | 129,489 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,144 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,052 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,630 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,395 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,691 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,305 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,758 |
| Countries with Double Letters | 0 | - | 4.97 | 95,358 |
| Countries that End in N | 0 | - | 4.95 | 170,394 |
| Countries with Five Letters | 0 | - | 4.96 | 281,286 |
| Countries with Six Letters | 0 | - | 4.94 | 212,802 |
| Countries with W | 0 | - | 4.97 | 159,708 |
| Countries with Z | 0 | - | 4.98 | 290,615 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,975 |
| Countries That End in U | 0 | - | 4.95 | 120,515 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,985 |
| Countries that End in O | 0 | - | 4.92 | 159,285 |
| Countries that End in R | 0 | - | 4.87 | 118,804 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,570 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,588 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,318 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,214 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,828 |
| Countries That End in Y | 0 | - | 4.91 | 185,717 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,521 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,601 |
| Countries that End in I | 0 | - | 4.94 | 134,948 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,715 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,665 |
| Countries That End in NIA | 0 | - | 4.92 | 109,621 |
| Countries That End in BIA | 0 | - | 4.93 | 148,975 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,880 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,199 |
| Countries That End in RIA | 0 | - | 4.93 | 126,637 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,772 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,078 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,406 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,794 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,328 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,413 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,794 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,357 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,291 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,287 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,993 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,710 |
| Countries that End in L | 0 | - | 4.94 | 156,648 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,747 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,189 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,335 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,381 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,797 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,319 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,822 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,705 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,015 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,637 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,757 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,424 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,263 |
| One Border Countries | 0 | - | 4.98 | 468,526 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,999 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,249 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,164 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,707 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,756 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,875 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,383 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,526 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,069 |
| Countries by National Anthem | 0 | - | 4.92 | 71,231 |
| NATO Countries | 0 | - | 4.98 | 280,282 |
| EU Countries Quiz | 0 | - | 4.99 | 274,068 |
| Recently Independent Countries | 0 | - | 4.98 | 159,210 |
| French-Speaking Countries | 0 | - | 4.85 | 270,475 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,814 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,999 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,261 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,055 |
| German-Speaking Countries | 0 | - | 4.92 | 145,539 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,794 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,156 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,694 |
