| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,623,638 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,763 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,397 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,522 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,607 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,617 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,463,009 |
| Landlocked Countries | 0 | - | 4.99 | 420,568 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,780 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,880 |
| Countries with Four Letters | 0 | - | 4.99 | 422,476 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,848 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,723 |
| Himalayan Countries | 0 | - | 4.95 | 138,096 |
| Andean Countries | 0 | - | 4.95 | 84,271 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,492 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,341 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,123 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,569 |
| Danube Countries | 0 | - | 4.97 | 71,836 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,801 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,243 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,979 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,432 |
| European Landlocked Countries | 0 | - | 4.99 | 146,969 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,383 |
| Countries with the Most Species | 0 | - | 4.99 | 103,095 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,534 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,659 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,692 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,447 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,518 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,117 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,507 |
| Countries in the Alps | 0 | - | 4.87 | 117,963 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,526 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,721 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,455 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,307 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,833 |
| Country Chain | 0 | - | 4.96 | 217,107 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,471 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,341 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,079 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,706 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,072 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,369 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,547 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,181 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,691 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,824 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,197 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,678 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,113 |
| Largest Countries By Category | 0 | - | 4.97 | 157,934 |
| Countries by Emojis | 0 | - | 4.99 | 239,728 |
| Countries by Countries | 0 | - | 4.97 | 63,015 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,941 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,702 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,468 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,218 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,513 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,512 |
| Islands by Country #1 | 0 | - | 4.88 | 175,291 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,528 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,888 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,727 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,769 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,052 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,933 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,739 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,610 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,018 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,452 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 720,829 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,324 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,056 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,254 |
| Island Countries | 0 | - | 4.99 | 710,404 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,928 |
| Northernmost Countries | 0 | - | 4.99 | 361,241 |
| Countries of South America | 0 | - | 5.00 | 925,140 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,081 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,026 |
| "Land" Countries | 0 | - | 4.98 | 336,461 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,937 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,210 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,128 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,756 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,476 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,798 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,703 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,211 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,121 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,098 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,218 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,843 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,093 |
| Random Countries by Borders | 0 | - | 4.99 | 82,446 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,077 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,338 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,474 |
| Countries with Megacities | 0 | - | 4.99 | 263,453 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,313 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,256 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,609 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,291 |
| Countries by Official Language | 0 | - | 4.95 | 194,943 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,962 |
| Countries in their Native Language | 0 | - | 4.99 | 198,468 |
| Independence from Whom | 0 | - | 4.99 | 211,725 |
| Subdivisions by Country | 0 | - | 4.86 | 50,363 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,991 |
| Megadiverse Countries | 0 | - | 4.96 | 134,888 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,810 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,262 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,060 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,918 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,486 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,228 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,938 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,352 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,796 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,095 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,419 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,696 |
| World Map Quiz | 0 | - | 4.81 | 64,876 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,429 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,198 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,789 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,099 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,832 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,790 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,730 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,863 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,170 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,354 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,444 |
| Widest Countries East to West | 0 | - | 4.92 | 129,508 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,417 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,169 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,063 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,643 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,418 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,710 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,312 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,406 |
| Countries that End in N | 0 | - | 4.95 | 170,448 |
| Countries with Five Letters | 0 | - | 4.96 | 281,413 |
| Countries with Six Letters | 0 | - | 4.94 | 212,867 |
| Countries with W | 0 | - | 4.97 | 159,739 |
| Countries with Z | 0 | - | 4.98 | 290,673 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,002 |
| Countries That End in U | 0 | - | 4.95 | 120,529 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,027 |
| Countries that End in O | 0 | - | 4.92 | 159,298 |
| Countries that End in R | 0 | - | 4.87 | 118,811 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,583 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,645 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,343 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,231 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,851 |
| Countries That End in Y | 0 | - | 4.91 | 185,734 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,547 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,633 |
| Countries that End in I | 0 | - | 4.94 | 134,963 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,748 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,676 |
| Countries That End in NIA | 0 | - | 4.92 | 109,635 |
| Countries That End in BIA | 0 | - | 4.93 | 148,994 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,893 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,218 |
| Countries That End in RIA | 0 | - | 4.93 | 126,657 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,789 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,136 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,436 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,823 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,351 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,427 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,812 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,363 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,311 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,294 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,024 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,742 |
| Countries that End in L | 0 | - | 4.94 | 156,672 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,850 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,195 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,917 |
