| Countries of the World Quiz | 0 | - | 5.00 | 47,058,866 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,916 |
| NATO Countries | 0 | - | 4.98 | 277,270 |
| EU Countries Quiz | 0 | - | 4.99 | 270,937 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,768 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,505 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,616 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,139 |
| Countries with NO Military | 0 | - | 4.97 | 61,383 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,053 |
| Landlocked Countries | 0 | - | 4.99 | 415,370 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,951 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,551 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,917 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,314 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,874 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,226 |
| Buddhist Countries | 0 | - | 4.96 | 143,205 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,506 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,460 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,731,025 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,307 |
| Himalayan Countries | 0 | - | 4.95 | 135,980 |
| Andean Countries | 0 | - | 4.94 | 83,172 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,492 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,631 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,186 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,832 |
| Danube Countries | 0 | - | 4.97 | 71,267 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,000 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,714 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,871 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,818 |
| European Landlocked Countries | 0 | - | 4.99 | 145,967 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,522 |
| Countries with the Most Species | 0 | - | 4.99 | 95,348 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,650 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,270 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,440 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,068 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,718 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,076 |
| Countries in the Alps | 0 | - | 4.86 | 117,126 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,760 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,597 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,160 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,592 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,380 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,141 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,803 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,898 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,694 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,208 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,273 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,139 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,620 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,880 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,890 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,461 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,800 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,350 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,035 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,275 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,195 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,733 |
| Largest Countries By Category | 0 | - | 4.97 | 157,032 |
| Countries by Countries | 0 | - | 4.96 | 62,444 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,948 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,844 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,807 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,804 |
| Island Countries | 0 | - | 4.99 | 708,327 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,726 |
| Northernmost Countries | 0 | - | 4.99 | 358,698 |
| Countries of South America | 0 | - | 5.00 | 917,843 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,238 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,402 |
| "Land" Countries | 0 | - | 4.98 | 334,104 |
| Countries that Start with A | 0 | - | 4.98 | 2,150,979 |
| Countries that Start with B | 0 | - | 4.95 | 2,283,548 |
| Countries that Start with C | 0 | - | 4.96 | 1,813,249 |
| Countries that Start with D | 0 | - | 4.96 | 703,592 |
| Countries that Start with E | 0 | - | 4.95 | 1,369,934 |
| Countries that Start with G | 0 | - | 4.97 | 1,495,400 |
| Countries that Start with H | 0 | - | 4.96 | 599,634 |
| Countries that Start with I | 0 | - | 4.92 | 1,282,258 |
| Countries that Start with J | 0 | - | 4.98 | 597,661 |
| Countries that Start with K | 0 | - | 4.97 | 810,916 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,803 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,723 |
| Countries that Start with P | 0 | - | 4.94 | 1,210,370 |
| Countries that Start with S | 0 | - | 4.98 | 1,747,166 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,626 |
| Countries that Start with U | 0 | - | 4.97 | 901,061 |
| Countries that Start with V | 0 | - | 4.98 | 606,123 |
| Countries that Start with F | 0 | - | 4.83 | 613,595 |
| Countries that Start with M | 0 | - | 4.97 | 1,375,457 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,377 |
| Orthodox Countries | 0 | - | 4.91 | 130,673 |
| Richest Island Countries | 0 | - | 4.84 | 99,799 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,106 |
| Monarchies of Europe | 0 | - | 4.90 | 97,549 |
| Monarchies of Asia | 0 | - | 4.97 | 70,732 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,785 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,542 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,592 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,500 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,794 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,704 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,838 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 266,609 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 103,491 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,927 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,897 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,261 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,721 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,910 |
| Countries with Megacities | 0 | - | 4.99 | 248,198 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,802 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,358 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,182 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,298 |
| Countries by Official Language | 0 | - | 4.95 | 193,188 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,727 |
| Countries in their Native Language | 0 | - | 4.99 | 197,026 |
| Independence from Whom | 0 | - | 4.99 | 210,164 |
| Subdivisions by Country | 0 | - | 4.86 | 50,150 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,067 |
| Megadiverse Countries | 0 | - | 4.96 | 134,451 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,187 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,013 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,546 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,907 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,883 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,128 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,330 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,450 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,302 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,787 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,928 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,519 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,623 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,584 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,291 |
| Richest Countries A-Z | 0 | - | 4.92 | 102,193 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,470 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,585 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,785 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,520 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,245 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,347 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,115 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,315 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,507 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,079 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,532 |
| Widest Countries East to West | 0 | - | 4.92 | 129,028 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,285 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,489 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,657 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,866 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,833 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,232 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,692 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,642 |
| Countries with Double Letters | 0 | - | 4.96 | 93,696 |
| Countries that End in N | 0 | - | 4.94 | 157,154 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,049 |
| Countries with Six Letters | 0 | - | 4.93 | 210,720 |
| Countries with W | 0 | - | 4.97 | 158,428 |
| Countries with Z | 0 | - | 4.98 | 288,257 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,771 |
| Countries That End in U | 0 | - | 4.95 | 119,617 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,888 |
| Countries that End in O | 0 | - | 4.92 | 158,662 |
| Countries that End in R | 0 | - | 4.87 | 118,379 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,938 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,429 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,568 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,658 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,204 |
| Countries That End in Y | 0 | - | 4.90 | 185,292 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,630 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,907 |
| Countries that End in I | 0 | - | 4.94 | 134,546 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,484 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,304 |
| Countries That End in NIA | 0 | - | 4.92 | 109,125 |
| Countries That End in BIA | 0 | - | 4.92 | 147,855 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,269 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,637 |
| Countries That End in RIA | 0 | - | 4.93 | 126,203 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,187 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,746 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,692 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,042 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,591 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,031 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,288 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,804 |
