| City to Country Quiz #1 | 0 | - | 4.97 | 155,820 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,699 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,753 |
| Landlocked Countries | 0 | - | 4.99 | 418,599 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,313,884 |
| Historical City to Country | 0 | - | 4.84 | 78,423 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,811 |
| Himalayan Countries | 0 | - | 4.94 | 137,271 |
| Andean Countries | 0 | - | 4.95 | 83,850 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,127 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,526 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,779 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,301 |
| Danube Countries | 0 | - | 4.97 | 71,615 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,498 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,019 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,583 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,653 |
| European Landlocked Countries | 0 | - | 4.99 | 146,733 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,082 |
| Countries with the Most Species | 0 | - | 4.99 | 102,870 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,216 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,422 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,575 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,281 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,960 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,335 |
| Countries in the Alps | 0 | - | 4.87 | 117,632 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,096 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,307 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,387 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,950 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,053 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,422 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,239 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,155 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,945 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,522 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,457 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,321 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,897 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,167 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,181 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,125 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,041 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,554 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,476 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,230 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,147 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,972 |
| Largest Countries By Category | 0 | - | 4.97 | 157,581 |
| Countries by Countries | 0 | - | 4.96 | 62,808 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,159 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,295 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,973 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,718 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,509 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,941 |
| Island Countries | 0 | - | 4.99 | 709,616 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,733 |
| Northernmost Countries | 0 | - | 4.99 | 360,343 |
| Countries of South America | 0 | - | 5.00 | 922,536 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,520 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,503 |
| "Land" Countries | 0 | - | 4.98 | 335,725 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,319 |
| City to Country Quiz #4 | 0 | - | 4.53 | 84,085 |
| City to Country Quiz #5 | 0 | - | 4.74 | 80,954 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,437 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,046 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,924 |
| Countries with Megacities | 0 | - | 4.99 | 257,504 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,784 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,929 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,073 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,934 |
| Countries by Official Language | 0 | - | 4.95 | 194,585 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,464 |
| Countries in their Native Language | 0 | - | 4.99 | 198,130 |
| Independence from Whom | 0 | - | 4.99 | 211,241 |
| Subdivisions by Country | 0 | - | 4.86 | 50,273 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,646 |
| Megadiverse Countries | 0 | - | 4.96 | 134,746 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,508 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,167 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,733 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,673 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,360 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,925 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,825 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,975 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,893 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,695 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,971 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,757 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,124 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,308 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,114 |
| World Map Quiz | 0 | - | 4.81 | 64,471 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,469 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,004 |
| Countries by Founding Story | 0 | - | 4.95 | 77,038 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,442 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,895 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,605 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,262 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,486 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,648 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,800 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,247 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,256 |
| Widest Countries East to West | 0 | - | 4.92 | 129,340 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,925 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,983 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,491 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,181 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,518 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,222 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,723 |
| Countries with Double Letters | 0 | - | 4.97 | 95,036 |
| Countries that End in N | 0 | - | 4.95 | 169,891 |
| Countries with Five Letters | 0 | - | 4.96 | 279,840 |
| Countries with Six Letters | 0 | - | 4.94 | 212,417 |
| Countries with W | 0 | - | 4.97 | 159,492 |
| Countries with Z | 0 | - | 4.98 | 289,737 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,687 |
| Countries That End in U | 0 | - | 4.95 | 120,389 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,709 |
| Countries that End in O | 0 | - | 4.92 | 159,179 |
| Countries that End in R | 0 | - | 4.87 | 118,722 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,268 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,073 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,062 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,644 |
| Countries That End in Y | 0 | - | 4.90 | 185,637 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,184 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,391 |
| Countries that End in I | 0 | - | 4.94 | 134,848 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,039 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,562 |
| Countries That End in NIA | 0 | - | 4.92 | 109,499 |
| Countries That End in BIA | 0 | - | 4.93 | 148,819 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,679 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,024 |
| Countries That End in RIA | 0 | - | 4.93 | 126,513 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,598 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,611 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,180 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,529 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,082 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,295 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,653 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,209 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,095 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,181 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,796 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,506 |
| Countries that End in L | 0 | - | 4.94 | 156,526 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,888 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,150 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,723 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,128 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,587 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,078 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,575 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,557 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,940 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,586 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,640 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,884 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,613 |
| One Border Countries | 0 | - | 4.98 | 467,522 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,982 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,588 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,625 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,523 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,353 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,651 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,246 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,341 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,900 |
| Countries by National Anthem | 0 | - | 4.93 | 71,172 |
| NATO Countries | 0 | - | 4.98 | 279,167 |
| EU Countries Quiz | 0 | - | 4.99 | 272,795 |
| Recently Independent Countries | 0 | - | 4.98 | 158,976 |
| French-Speaking Countries | 0 | - | 4.85 | 270,168 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,746 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,500 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,363 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,782 |
| German-Speaking Countries | 0 | - | 4.91 | 145,275 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,221 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,788 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,033 |
