| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,131 |
| European Countries with One Border | 0 | - | 4.97 | 183,298 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,079 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,481 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 154,549 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 89,268 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,017 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,361 |
| Countries Bordering France | 0 | - | 4.83 | 403,938 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,998 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,549 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,787 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,666,911 |
| Countries Bordering India | 0 | - | 4.98 | 163,641 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,744 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,605 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,687 |
| Countries that Border China | 0 | - | 4.96 | 263,738 |
| Countries Bordering Kenya | 0 | - | 4.87 | 63,004 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,853 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,081 |
| Merged Countries #2 | 0 | - | 4.96 | 99,346 |
| Merged Countries #6 | 0 | - | 4.90 | 73,565 |
| Merged Countries #7 | 0 | - | 4.93 | 82,911 |
| Landlocked Countries | 0 | - | 4.99 | 423,043 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,497 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,430 |
| Countries with Glaciers | 0 | - | 4.96 | 105,620 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,759 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,809 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,149 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 356,293 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 416,383 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,477 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,032 |
| Himalayan Countries | 0 | - | 4.95 | 139,188 |
| Andean Countries | 0 | - | 4.93 | 84,879 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,098 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,237 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,676 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,991 |
| Danube Countries | 0 | - | 4.97 | 72,139 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,193 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,545 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,539 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,048 |
| European Landlocked Countries | 0 | - | 4.99 | 147,282 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,842 |
| Countries with the Most Species | 0 | - | 4.99 | 103,350 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,966 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,648 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,768 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,621 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,370 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,788 |
| Countries in the Alps | 0 | - | 4.87 | 118,363 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,770 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,290 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,758 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,720 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,643 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,043 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,818 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,610 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,249 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,956 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,723 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,591 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,329 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,568 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,636 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,167 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,404 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,774 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,253 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,518 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,436 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,314 |
| Largest Countries By Category | 0 | - | 4.97 | 158,404 |
| Countries by Countries | 0 | - | 4.96 | 63,360 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,795 |
| Walking Across Borders with Hints #1 | 0 | - | 4.94 | 109,133 |
| Random Countries by Borders | 0 | - | 4.99 | 82,771 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,553 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,854 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,006 |
| Island Countries | 0 | - | 4.99 | 711,431 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,326 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,209 |
| Northernmost Countries | 0 | - | 4.99 | 362,501 |
| Countries of South America | 0 | - | 5.00 | 928,842 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,770 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,648 |
| "Land" Countries | 0 | - | 4.98 | 337,638 |
| Countries That Border Russia | 0 | - | 4.98 | 463,388 |
| Asian Countries with the Fewest Borders | 0 | - | 4.74 | 107,160 |
| Countries Bordering the EU | 0 | - | 4.78 | 73,385 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,928 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,399 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,213 |
| Countries with Megacities | 0 | - | 4.99 | 265,334 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,039 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,643 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,285 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,715 |
| Countries by Official Language | 0 | - | 4.95 | 195,475 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,677 |
| Countries in their Native Language | 0 | - | 4.99 | 199,249 |
| Independence from Whom | 0 | - | 4.99 | 212,341 |
| Subdivisions by Country | 0 | - | 4.87 | 50,485 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,916 |
| Megadiverse Countries | 0 | - | 4.96 | 135,096 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,281 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,416 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,294 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,142 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,274 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,661 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,619 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,417 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,710 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,183 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,907 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,953 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,271 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,014 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,428 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,459 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,314 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,413 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,120 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,581 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,015 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,126 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,401 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,497 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,653 |
| Widest Countries East to West | 0 | - | 4.92 | 129,755 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,480 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,515 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,366 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,845 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,702 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,976 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,413 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,485 |
| Countries that End in N | 0 | - | 4.95 | 171,376 |
| Countries with Five Letters | 0 | - | 4.96 | 282,924 |
| Countries with Six Letters | 0 | - | 4.94 | 213,814 |
| Countries with W | 0 | - | 4.96 | 160,508 |
| Countries with Z | 0 | - | 4.98 | 291,734 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,867 |
| Countries That End in U | 0 | - | 4.95 | 120,943 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,640 |
| Countries that End in O | 0 | - | 4.92 | 159,597 |
| Countries that End in R | 0 | - | 4.87 | 119,027 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,788 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,317 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,820 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,582 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,495 |
| Countries That End in Y | 0 | - | 4.91 | 185,944 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,062 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,988 |
| Countries that End in I | 0 | - | 4.94 | 135,170 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,882 |
| Countries That End in NIA | 0 | - | 4.92 | 109,858 |
| Countries That End in BIA | 0 | - | 4.93 | 149,309 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,219 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,528 |
| Countries That End in RIA | 0 | - | 4.93 | 126,883 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,125 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,896 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,851 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,282 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,831 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,639 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,115 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,468 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,490 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,107 |
| Countries that End in L | 0 | - | 4.94 | 156,924 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,274 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,290 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,096 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,023 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,070 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,948 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,809 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,232 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,952 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,609 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,968 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,140 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,737 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,017 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,807 |
| One Border Countries | 0 | - | 4.98 | 470,477 |
