| Countries of the World Quiz | 0 | - | 5.00 | 46,857,729 |
| Landlocked Countries | 0 | - | 4.99 | 412,935 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,659 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,445 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,274 |
| Himalayan Countries | 0 | - | 4.95 | 135,076 |
| Andean Countries | 0 | - | 4.94 | 82,679 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,093 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,010 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,777 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,485 |
| Danube Countries | 0 | - | 4.97 | 71,009 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,648 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,465 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,303 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,224 |
| European Landlocked Countries | 0 | - | 4.99 | 145,677 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,065 |
| Countries with the Most Species | 0 | - | 4.99 | 95,195 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,215 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,178 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,335 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,913 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,520 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,876 |
| Countries in the Alps | 0 | - | 4.87 | 116,697 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,483 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,096 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,949 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,335 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,072 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,940 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,479 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,692 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,076 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,976 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,166 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,001 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,370 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,683 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,680 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,892 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,574 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,253 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,206 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,686 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,876 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,400 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,547 |
| Largest Countries By Category | 0 | - | 4.97 | 156,634 |
| Countries by Countries | 0 | - | 4.96 | 62,175 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,234 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,936 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,307 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,664 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,115 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,855 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,030 |
| Island Countries | 0 | - | 4.99 | 707,270 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,252 |
| 20 Random Country Flags | 0 | - | 4.99 | 603,610 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,459 |
| Northernmost Countries | 0 | - | 4.99 | 357,291 |
| Countries of South America | 0 | - | 5.00 | 913,535 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,778 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,437 |
| "Land" Countries | 0 | - | 4.98 | 333,442 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 129,519 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,314 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,939 |
| Name a Valid African Country | 0 | - | 4.98 | 152,821 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,635 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,153 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,884 |
| Countries with Megacities | 0 | - | 4.99 | 246,240 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,804 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,745 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,267 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,681 |
| Countries by Official Language | 0 | - | 4.95 | 192,602 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,898 |
| Countries in their Native Language | 0 | - | 4.99 | 196,488 |
| Independence from Whom | 0 | - | 4.99 | 209,493 |
| Subdivisions by Country | 0 | - | 4.86 | 50,034 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,593 |
| Megadiverse Countries | 0 | - | 4.97 | 133,837 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,659 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,879 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,375 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,838 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,555 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,942 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,601 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,068 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,183 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,717 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,402 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,367 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,438 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,453 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,610 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,983 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,371 |
| World Map Quiz | 0 | - | 4.81 | 63,373 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,258 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,229 |
| Countries by Founding Story | 0 | - | 4.95 | 76,453 |
| Countries by Road Signs | 0 | - | 4.98 | 52,991 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,174 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,885 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,862 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,525 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,781 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,976 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,178 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,884 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,265 |
| Widest Countries East to West | 0 | - | 4.92 | 128,532 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,192 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,090 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,524 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,629 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,527 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,951 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,032 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,552 |
| Political Movements by Country | 0 | - | 4.46 | 72,229 |
| Countries with Double Letters | 0 | - | 4.97 | 93,232 |
| Countries that End in N | 0 | - | 4.94 | 156,299 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,503 |
| Countries with Six Letters | 0 | - | 4.93 | 210,207 |
| Countries with W | 0 | - | 4.97 | 158,110 |
| Countries with Z | 0 | - | 4.98 | 287,506 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,436 |
| Countries That End in U | 0 | - | 4.95 | 119,453 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,361 |
| Countries that End in O | 0 | - | 4.92 | 158,482 |
| Countries that End in R | 0 | - | 4.86 | 118,211 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,813 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,876 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,191 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,392 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,575 |
| Countries That End in Y | 0 | - | 4.90 | 185,156 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,192 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,561 |
| Countries that End in I | 0 | - | 4.94 | 134,320 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,029 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,148 |
| Countries That End in NIA | 0 | - | 4.92 | 108,937 |
| Countries That End in BIA | 0 | - | 4.92 | 147,619 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,982 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,414 |
| Countries That End in RIA | 0 | - | 4.93 | 126,018 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,925 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,995 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,440 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,824 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,258 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,871 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,038 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,557 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,395 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,771 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,020 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,695 |
| Countries that End in L | 0 | - | 4.94 | 155,649 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,710 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,965 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,463 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,229 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,369 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,299 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,957 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,840 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,062 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,259 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,444 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,567 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,145 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,392 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,261 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,797,760 |
| One Border Countries | 0 | - | 4.98 | 463,635 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,956 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,014 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,734 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,718 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,762 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,409 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,494 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,160 |
| Resort Towns by Country | 0 | - | 4.30 | 39,909 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,040 |
| Countries by National Anthem | 0 | - | 4.92 | 70,999 |
| NATO Countries | 0 | - | 4.98 | 275,166 |
| EU Countries Quiz | 0 | - | 4.99 | 269,474 |
| Recently Independent Countries | 0 | - | 4.98 | 157,871 |
| French-Speaking Countries | 0 | - | 4.85 | 268,625 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,335 |
