| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,703 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,016 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,328,889 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,356 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,872 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,097 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,810 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,187 |
| Countries with Four Letters | 0 | - | 4.99 | 421,555 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,178 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,243 |
| Landlocked Countries | 0 | - | 4.99 | 418,860 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 975,044 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,904 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,461 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,678 |
| Country Chain | 0 | - | 4.96 | 216,811 |
| Countries by Emojis | 0 | - | 4.99 | 238,666 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,714 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,809 |
| Islands by Country #1 | 0 | - | 4.88 | 175,106 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,372 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,714 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,623 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,392 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,974 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,495 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,653 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,049 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,950 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,332 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,931 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,969 |
| Himalayan Countries | 0 | - | 4.94 | 137,392 |
| Andean Countries | 0 | - | 4.95 | 83,918 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,214 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,632 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,820 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,343 |
| Danube Countries | 0 | - | 4.97 | 71,650 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,537 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,047 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,631 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,719 |
| European Landlocked Countries | 0 | - | 4.99 | 146,770 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,124 |
| Countries with the Most Species | 0 | - | 4.99 | 102,900 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,259 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,429 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,585 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,295 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,981 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,356 |
| Countries in the Alps | 0 | - | 4.87 | 117,680 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,123 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,354 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,406 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,979 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,082 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,490 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,275 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,179 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,963 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,547 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,474 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,335 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,917 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,180 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,202 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,162 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,058 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,567 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,509 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,328 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,205 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,992 |
| Largest Countries By Category | 0 | - | 4.97 | 157,623 |
| Countries by Countries | 0 | - | 4.96 | 62,830 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,201 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,157 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,466 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,315 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,903 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,581 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,059 |
| Island Countries | 0 | - | 4.99 | 709,717 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,967 |
| Northernmost Countries | 0 | - | 4.99 | 360,426 |
| Countries of South America | 0 | - | 5.00 | 922,810 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,873 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,109 |
| "Land" Countries | 0 | - | 4.98 | 335,779 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,555 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,930 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,945 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,634 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,293 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,537 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,487 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,078 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,512 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,517 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,780 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,533 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,986 |
| Random Countries by Borders | 0 | - | 4.99 | 82,278 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,003 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,691 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,191 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,004 |
| Countries with Megacities | 0 | - | 4.99 | 259,371 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,864 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,981 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,154 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,981 |
| Countries by Official Language | 0 | - | 4.95 | 194,630 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,510 |
| Countries in their Native Language | 0 | - | 4.99 | 198,170 |
| Independence from Whom | 0 | - | 4.99 | 211,287 |
| Subdivisions by Country | 0 | - | 4.86 | 50,285 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,690 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,535 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,180 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,749 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,014 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,703 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,377 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,964 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,838 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,477 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,986 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,937 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,708 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,989 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,769 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,146 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,322 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,169 |
| World Map Quiz | 0 | - | 4.81 | 64,506 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,279 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,560 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,024 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,485 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,922 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,631 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,311 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,513 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,666 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,820 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,258 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,276 |
| Widest Countries East to West | 0 | - | 4.92 | 129,364 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,380 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,950 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,506 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,213 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,539 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,229 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,725 |
| Countries with Double Letters | 0 | - | 4.97 | 95,075 |
| Countries that End in N | 0 | - | 4.95 | 169,968 |
| Countries with Five Letters | 0 | - | 4.96 | 280,122 |
| Countries with Six Letters | 0 | - | 4.94 | 212,462 |
| Countries with W | 0 | - | 4.97 | 159,514 |
| Countries with Z | 0 | - | 4.98 | 289,785 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,725 |
| Countries That End in U | 0 | - | 4.95 | 120,405 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,738 |
| Countries that End in O | 0 | - | 4.92 | 159,190 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,507 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,315 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,094 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,073 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,658 |
| Countries That End in Y | 0 | - | 4.90 | 185,646 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,219 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,412 |
| Countries that End in I | 0 | - | 4.94 | 134,863 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,067 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,572 |
| Countries That End in NIA | 0 | - | 4.92 | 109,511 |
| Countries That End in BIA | 0 | - | 4.93 | 148,837 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,704 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,051 |
| Countries That End in RIA | 0 | - | 4.93 | 126,529 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,613 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,669 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,213 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,570 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,102 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,316 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,680 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,232 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,114 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,188 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,816 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,527 |
