| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,647 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,594 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,413 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,520 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,813,910 |
| Landlocked Countries | 0 | - | 4.99 | 416,739 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 562,084 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,170,391 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,158 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,144 |
| All Countries by Northernmost Point on Land | 0 | - | 4.89 | 125,676 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.94 | 62,085 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,840 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,975 |
| Himalayan Countries | 0 | - | 4.95 | 136,535 |
| Andean Countries | 0 | - | 4.95 | 83,507 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,772 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,030 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,437 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,039 |
| Danube Countries | 0 | - | 4.97 | 71,440 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,225 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,854 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,170 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,150 |
| European Landlocked Countries | 0 | - | 4.99 | 146,137 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,783 |
| Countries with the Most Species | 0 | - | 4.99 | 101,785 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,910 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,336 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,516 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,165 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,813 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,195 |
| Countries in the Alps | 0 | - | 4.86 | 117,342 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,914 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,926 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,259 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,750 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,833 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,260 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,997 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,999 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,810 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,334 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,371 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,206 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,733 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,006 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,014 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,733 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,902 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,434 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,258 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,055 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,591 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,836 |
| Largest Countries By Category | 0 | - | 4.97 | 157,274 |
| Countries by Countries | 0 | - | 4.96 | 62,597 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,882 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,082 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,771 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,404 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,092 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,741,138 |
| Pixelated World Map | 0 | - | 5.00 | 142,892 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,194 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,899 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,133 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,677 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,933 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,859 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,845 |
| Island Countries | 0 | - | 4.99 | 708,850 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,445 |
| Northernmost Countries | 0 | - | 4.99 | 359,416 |
| Countries of South America | 0 | - | 5.00 | 919,793 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,888 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,019 |
| "Land" Countries | 0 | - | 4.98 | 334,639 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,310 |
| Countries with Megacities | 0 | - | 4.99 | 249,014 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,158 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,563 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,507 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,528 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,473 |
| Countries by Official Language | 0 | - | 4.95 | 194,029 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,629 |
| Countries in their Native Language | 0 | - | 4.99 | 197,647 |
| Independence from Whom | 0 | - | 4.99 | 210,828 |
| Subdivisions by Country | 0 | - | 4.86 | 50,204 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,346 |
| Megadiverse Countries | 0 | - | 4.96 | 134,546 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,849 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,079 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,633 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,453 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,227 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,609 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,552 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,375 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,808 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,210 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,582 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,689 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,648 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,863 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,204 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,748 |
| World Map Quiz | 0 | - | 4.81 | 64,105 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,708 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 142,870 |
| Countries by Founding Story | 0 | - | 4.95 | 76,881 |
| Countries by Road Signs | 0 | - | 4.98 | 53,426 |
| Countries That Do Not Border | 0 | - | 4.99 | 59,767 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,069 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,676 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,404 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,726 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,275 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,472 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,634 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,151 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,645 |
| Widest Countries East to West | 0 | - | 4.92 | 129,143 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,331 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,662 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,924 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,960 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,986 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,368 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,104 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,678 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,681 |
| Countries with Double Letters | 0 | - | 4.96 | 94,158 |
| Countries that End in N | 0 | - | 4.95 | 166,181 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,603 |
| Countries with Six Letters | 0 | - | 4.93 | 211,154 |
| Countries with W | 0 | - | 4.97 | 158,826 |
| Countries with Z | 0 | - | 4.98 | 288,794 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,049 |
| Countries That End in U | 0 | - | 4.95 | 119,927 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,173 |
| Countries that End in O | 0 | - | 4.92 | 158,871 |
| Countries that End in R | 0 | - | 4.87 | 118,513 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,294 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,775 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,752 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,814 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,386 |
| Countries That End in Y | 0 | - | 4.90 | 185,432 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,846 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,097 |
| Countries that End in I | 0 | - | 4.94 | 134,672 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,699 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,415 |
| Countries That End in NIA | 0 | - | 4.92 | 109,297 |
| Countries That End in BIA | 0 | - | 4.93 | 148,570 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,431 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,774 |
| Countries That End in RIA | 0 | - | 4.93 | 126,349 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,338 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,097 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,873 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,208 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,791 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,145 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,440 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,947 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,845 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,001 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,526 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,212 |
| Countries that End in L | 0 | - | 4.94 | 156,294 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,912 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,070 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,715 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,566 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,621 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,335 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,813 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,333 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,826 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,261 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,053 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,871 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,297 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,524 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,522 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 145,823 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.84 | 76,690 |
| Top World Languages on a Map | 0 | - | 4.93 | 102,521 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 115,906 |
| 407 Islands on the World Map | 0 | - | 4.99 | 34,910 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,433 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 42,043 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,072 |
