| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,711 |
| Independence from Whom | 0 | - | 4.99 | 210,406 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,221 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,176 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,478 |
| European Countries with One Border | 0 | - | 4.97 | 182,040 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,905 |
| Random Countries by Borders | 0 | - | 4.99 | 81,896 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,026 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 153,591 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,680 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 99,683 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,212 |
| Recently Independent Countries | 0 | - | 4.98 | 158,308 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,041 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,975 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,665 |
| Countries by Former Name | 0 | - | 4.99 | 124,617 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,878 |
| Historical City to Country | 0 | - | 4.84 | 78,286 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,117,288 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,992 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,007 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,322 |
| Countries Bordering Kenya | 0 | - | 4.87 | 62,652 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,359 |
| Landlocked Countries | 0 | - | 4.99 | 416,044 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,703 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,304 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,778 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,292 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,677 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,857 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,618 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,495 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,857 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,736 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,984 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,479 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,052 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,348 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,123 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 103,394 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,514 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,208 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,900 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,644 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 355,166 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 413,706 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,059 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,116 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,859 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,636 |
| Himalayan Countries | 0 | - | 4.95 | 136,247 |
| Andean Countries | 0 | - | 4.95 | 83,330 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,606 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,819 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,309 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,926 |
| Danube Countries | 0 | - | 4.97 | 71,334 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,117 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,791 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,023 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,975 |
| European Landlocked Countries | 0 | - | 4.99 | 146,052 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,661 |
| Countries with the Most Species | 0 | - | 4.99 | 97,807 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,806 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,301 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,479 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,115 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,762 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,134 |
| Countries in the Alps | 0 | - | 4.86 | 117,254 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,842 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,758 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,212 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,666 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,563 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,206 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,913 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,953 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,754 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,286 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,324 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,182 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,676 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,938 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,945 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,609 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,853 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,388 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,134 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,684 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,428 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,781 |
| Largest Countries By Category | 0 | - | 4.97 | 157,178 |
| Countries by Countries | 0 | - | 4.96 | 62,531 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,114 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,862 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,373 |
| Battle to Country | 0 | - | 4.91 | 52,838 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,062 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,035 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 235,603 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 134,509 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 82,837 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 87,000 |
| Walking Across Borders with Hints #1 | 0 | - | 4.95 | 107,377 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,400 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,545 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,284 |
| Island Countries | 0 | - | 4.99 | 708,611 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,950 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,662 |
| Northernmost Countries | 0 | - | 4.99 | 359,077 |
| Countries of South America | 0 | - | 5.00 | 918,851 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,651 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,654 |
| "Land" Countries | 0 | - | 4.98 | 334,284 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 380,244 |
| Countries Bordering France | 0 | - | 4.83 | 400,903 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,842 |
| Countries by Independence Day | 0 | - | 4.61 | 52,664 |
| Former Countries by Capital | 0 | - | 4.45 | 127,219 |
| Former Countries | 0 | - | 4.75 | 132,926 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,359 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,298 |
| Asian Countries with the Fewest Borders | 0 | - | 4.74 | 106,658 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,848 |
| Countries Bordering the EU | 0 | - | 4.77 | 72,598 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,090 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,633 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,126 |
| Countries with Megacities | 0 | - | 4.99 | 248,635 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,993 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,464 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,371 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,415 |
| Countries by Official Language | 0 | - | 4.95 | 193,797 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,287 |
| Countries in their Native Language | 0 | - | 4.99 | 197,444 |
| Subdivisions by Country | 0 | - | 4.86 | 50,171 |
| Megadiverse Countries | 0 | - | 4.96 | 134,500 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,658 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,056 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,596 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,936 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,119 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,505 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,335 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,073 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,555 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,654 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,624 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,828 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,166 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,365 |
| World Map Quiz | 0 | - | 4.81 | 63,944 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,649 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,954 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,608 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,328 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,544 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,195 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,394 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,573 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,113 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,599 |
| Widest Countries East to West | 0 | - | 4.92 | 129,095 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,308 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,577 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,763 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,922 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,306 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,981 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Countries with Double Letters | 0 | - | 4.96 | 93,822 |
| Countries that End in N | 0 | - | 4.94 | 157,255 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,219 |
| Countries with Six Letters | 0 | - | 4.93 | 210,852 |
| Countries with W | 0 | - | 4.97 | 158,512 |
| Countries with Z | 0 | - | 4.98 | 288,406 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,860 |
| Countries That End in U | 0 | - | 4.95 | 119,666 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,006 |
| Countries that End in O | 0 | - | 4.92 | 158,697 |
| Countries that End in R | 0 | - | 4.87 | 118,416 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,969 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,574 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,639 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,726 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,296 |
| Countries That End in Y | 0 | - | 4.90 | 185,325 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,740 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,000 |
| Countries that End in I | 0 | - | 4.94 | 134,597 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,602 |
