| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,730 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,222 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,162 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,266 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,877 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,228 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,930,897 |
| Landlocked Countries | 0 | - | 4.99 | 413,742 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,256 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,836 |
| Countries with Four Letters | 0 | - | 4.99 | 418,613 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,718,113 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,646 |
| Himalayan Countries | 0 | - | 4.95 | 135,412 |
| Andean Countries | 0 | - | 4.94 | 82,844 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,236 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,235 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,928 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,624 |
| Danube Countries | 0 | - | 4.97 | 71,094 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,777 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,548 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,515 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,425 |
| European Landlocked Countries | 0 | - | 4.99 | 145,768 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,230 |
| Countries with the Most Species | 0 | - | 4.99 | 95,248 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,368 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,202 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,372 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,353 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,964 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,465 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,581 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,957 |
| Countries in the Alps | 0 | - | 4.86 | 116,842 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,581 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,278 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,020 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,432 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,184 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,011 |
| Country Chain | 0 | - | 4.96 | 215,763 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,593 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,769 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,347 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,075 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,199 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,049 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,460 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,758 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,763 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,100 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,657 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,260 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,781 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,365 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,714 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,611 |
| Largest Countries By Category | 0 | - | 4.97 | 156,780 |
| Countries by Emojis | 0 | - | 4.99 | 236,239 |
| Countries by Countries | 0 | - | 4.96 | 62,269 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,131 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,091 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,405 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,964 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,335 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,778 |
| Islands by Country #1 | 0 | - | 4.87 | 174,507 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,934 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,297 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,346 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,865 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,862 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,620 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,460 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,636 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,838 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,448 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,698 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,198 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,157 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,912 |
| Island Countries | 0 | - | 4.99 | 707,675 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,634 |
| Northernmost Countries | 0 | - | 4.99 | 357,798 |
| Countries of South America | 0 | - | 5.00 | 914,986 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,781 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,827 |
| "Land" Countries | 0 | - | 4.98 | 333,685 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,471 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,466 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,362 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,350 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,864 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,661 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,697 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,643 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,628 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,889 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,386 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,482 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,612 |
| Random Countries by Borders | 0 | - | 4.99 | 81,689 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,254 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,332 |
| Countries with Megacities | 0 | - | 4.99 | 247,083 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,204 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,032 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,622 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,942 |
| Countries by Official Language | 0 | - | 4.95 | 192,801 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,166 |
| Countries in their Native Language | 0 | - | 4.99 | 196,663 |
| Independence from Whom | 0 | - | 4.99 | 209,733 |
| Subdivisions by Country | 0 | - | 4.86 | 50,071 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,783 |
| Megadiverse Countries | 0 | - | 4.97 | 133,910 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,822 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,922 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,431 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,865 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,685 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,014 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,044 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,161 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,220 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,750 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,602 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,433 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,502 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,509 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,690 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,033 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,627 |
| World Map Quiz | 0 | - | 4.81 | 63,513 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,737 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,342 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,375 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,007 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,965 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,803 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,866 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,073 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,287 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,955 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,345 |
| Widest Countries East to West | 0 | - | 4.92 | 128,617 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,239 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,573 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,698 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,644 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,058 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,052 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,587 |
| Countries with Double Letters | 0 | - | 4.97 | 93,411 |
| Countries that End in N | 0 | - | 4.94 | 156,901 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,713 |
| Countries with Six Letters | 0 | - | 4.93 | 210,390 |
| Countries with W | 0 | - | 4.97 | 158,241 |
| Countries with Z | 0 | - | 4.98 | 287,906 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,570 |
| Countries That End in U | 0 | - | 4.95 | 119,526 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,588 |
| Countries that End in O | 0 | - | 4.92 | 158,568 |
| Countries that End in R | 0 | - | 4.87 | 118,280 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,863 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,070 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,354 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,507 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,039 |
| Countries That End in Y | 0 | - | 4.90 | 185,214 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,396 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,701 |
| Countries that End in I | 0 | - | 4.94 | 134,425 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,213 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,203 |
| Countries That End in NIA | 0 | - | 4.92 | 109,014 |
| Countries That End in BIA | 0 | - | 4.92 | 147,725 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,082 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,495 |
| Countries That End in RIA | 0 | - | 4.93 | 126,092 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,020 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,215 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,536 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,893 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,371 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,937 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,138 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,659 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,521 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,818 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,163 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,829 |
| Countries that End in L | 0 | - | 4.94 | 155,745 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,274 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,989 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,520 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,311 |
