| Countries of the World Quiz | 0 | - | 5.00 | 46,895,065 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,352 |
| NATO Countries | 0 | - | 4.98 | 275,534 |
| EU Countries Quiz | 0 | - | 4.99 | 269,755 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,787 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,086 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,977 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,696 |
| Countries with NO Military | 0 | - | 4.97 | 61,138 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,887 |
| Landlocked Countries | 0 | - | 4.99 | 413,317 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,267 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,394 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,313 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,932 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,429 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,653 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,123 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,783 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,311 |
| Flags that are Red & White Only | 0 | - | 4.97 | 159,561 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,544 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 73,909 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,222 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,702 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,090 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,554 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,571 |
| Pixelated World Map | 0 | - | 5.00 | 142,389 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,884 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,882 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,647 |
| Buddhist Countries | 0 | - | 4.96 | 142,909 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,353 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,659 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,709 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,934 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,344 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,265 |
| World Coats of Arms | 0 | - | 4.99 | 63,831 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,997 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,697 |
| Every Country Shape | 0 | - | 5.00 | 458,618 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,747 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,019 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,002 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,019 |
| World Currency Quiz | 0 | - | 4.92 | 298,237 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,600 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,750 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,452 |
| Himalayan Countries | 0 | - | 4.95 | 135,239 |
| Andean Countries | 0 | - | 4.94 | 82,766 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,179 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,118 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,848 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,553 |
| Danube Countries | 0 | - | 4.97 | 71,048 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,717 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,505 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,404 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,331 |
| European Landlocked Countries | 0 | - | 4.99 | 145,720 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,150 |
| Countries with the Most Species | 0 | - | 4.99 | 95,228 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,292 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,357 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,941 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,550 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,922 |
| Countries in the Alps | 0 | - | 4.86 | 116,772 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,527 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,193 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,986 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,393 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,972 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,536 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,727 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,130 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,024 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,185 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,025 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,420 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,714 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,724 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,004 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,613 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,737 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,110 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,543 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,577 |
| Largest Countries By Category | 0 | - | 4.97 | 156,703 |
| Countries by Countries | 0 | - | 4.96 | 62,232 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,953 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,725 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,489 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,022 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,640 |
| Island Countries | 0 | - | 4.99 | 707,492 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,077 |
| Northernmost Countries | 0 | - | 4.99 | 357,555 |
| Countries of South America | 0 | - | 5.00 | 914,188 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,797 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,212 |
| "Land" Countries | 0 | - | 4.98 | 333,559 |
| Countries that Start with A | 0 | - | 4.97 | 2,146,061 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,215 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,788 |
| Countries that Start with D | 0 | - | 4.96 | 701,172 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,083 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,310 |
| Countries that Start with H | 0 | - | 4.96 | 597,635 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,930 |
| Countries that Start with J | 0 | - | 4.98 | 595,699 |
| Countries that Start with K | 0 | - | 4.97 | 809,127 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,548 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,412 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,248 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,078 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,971 |
| Countries that Start with U | 0 | - | 4.97 | 899,737 |
| Countries that Start with V | 0 | - | 4.98 | 604,907 |
| Countries that Start with F | 0 | - | 4.83 | 611,939 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,962 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,341 |
| World Map without 12 Countries #2 | 0 | - | 4.97 | 171,246 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 136,950 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,978 |
| Orthodox Countries | 0 | - | 4.91 | 130,340 |
| Richest Island Countries | 0 | - | 4.84 | 99,477 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,492 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,994 |
| Battle to Country | 0 | - | 4.91 | 52,492 |
| Monarchies of Europe | 0 | - | 4.90 | 97,281 |
| Monarchies of Asia | 0 | - | 4.97 | 70,581 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,471 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,716 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,236 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,387 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,532 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,421 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,227 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,148 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 161,730 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,320 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,293 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,616 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,220 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,263 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 79,997 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,527 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,009 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,237 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,117 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,446 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,525 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,615 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,981 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,902 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,681 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,552 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,856 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,419 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,688 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,000 |
| Countries with Megacities | 0 | - | 4.99 | 246,538 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,921 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,800 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,373 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,760 |
| Countries by Official Language | 0 | - | 4.95 | 192,707 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,041 |
| Countries in their Native Language | 0 | - | 4.99 | 196,566 |
| Independence from Whom | 0 | - | 4.99 | 209,609 |
| Subdivisions by Country | 0 | - | 4.86 | 50,052 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,690 |
| Megadiverse Countries | 0 | - | 4.97 | 133,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,740 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,904 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,407 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,612 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,975 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,848 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,122 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,509 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,400 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,476 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,646 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,005 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,054 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,798 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,505 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,298 |
