| Countries of the World Quiz | 0 | - | 5.00 | 47,426,739 |
| Landlocked Countries | 0 | - | 4.99 | 420,038 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,271 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,315 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,548 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,470 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,799 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,596 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,850 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,354 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,185 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,238 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,953 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,065 |
| Countries by Emojis | 0 | - | 4.99 | 239,565 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,886 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,496 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,459 |
| Pixelated World Map | 0 | - | 5.00 | 143,349 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,406 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,480 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,586 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,365 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,043 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,083 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,389 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,717 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,928 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,030 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,847 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,739 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,486 |
| World Coats of Arms | 0 | - | 4.99 | 64,471 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,965 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,640 |
| Every Country Shape | 0 | - | 5.00 | 464,989 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,764,735 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,443 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,928 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,419 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,491 |
| Himalayan Countries | 0 | - | 4.95 | 137,909 |
| Andean Countries | 0 | - | 4.95 | 84,172 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,382 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,967 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,039 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,487 |
| Danube Countries | 0 | - | 4.97 | 71,775 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,717 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,172 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,875 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,972 |
| European Landlocked Countries | 0 | - | 4.99 | 146,911 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,305 |
| Countries with the Most Species | 0 | - | 4.99 | 103,045 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,453 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,470 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,638 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,404 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,082 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,471 |
| Countries in the Alps | 0 | - | 4.87 | 117,895 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 97,696 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,613 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,512 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,398 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,244 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,807 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,409 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,292 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,044 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,660 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,549 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,390 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,021 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,312 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,321 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,447 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,141 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,649 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,717 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,953 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,536 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,069 |
| Largest Countries By Category | 0 | - | 4.97 | 157,849 |
| Countries by Countries | 0 | - | 4.97 | 62,961 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,391 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,194 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,454 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,953 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,926 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,987 |
| Island Countries | 0 | - | 4.99 | 710,219 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,378 |
| Northernmost Countries | 0 | - | 4.99 | 361,038 |
| Countries of South America | 0 | - | 5.00 | 924,517 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,375 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,870,508 |
| "Land" Countries | 0 | - | 4.98 | 336,094 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,218 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,127 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 138,161 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,243 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,078 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,732 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,441 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,541 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,648 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,175 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,814 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,842 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,452 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,106 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 36,673 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,424 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,473 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,127 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,281 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,623 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,161 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,852 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,058 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,940 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,362 |
| Countries with Megacities | 0 | - | 4.99 | 262,947 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,196 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,176 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,500 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,216 |
| Countries by Official Language | 0 | - | 4.95 | 194,861 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,837 |
| Countries in their Native Language | 0 | - | 4.99 | 198,399 |
| Independence from Whom | 0 | - | 4.99 | 211,620 |
| Subdivisions by Country | 0 | - | 4.86 | 50,341 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,914 |
| Megadiverse Countries | 0 | - | 4.96 | 134,848 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,734 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,237 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,818 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,052 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,857 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,456 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,151 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,911 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,545 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,030 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,272 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,780 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,065 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,846 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,228 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,399 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,539 |
| World Map Quiz | 0 | - | 4.81 | 64,797 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 130,651 |
| Countries Connected in the World Map #2 | 0 | - | 4.97 | 80,405 |
| Countries Connected in the World Map #1 | 0 | - | 4.97 | 77,105 |
| Countries Connected in the World Map #3 | 0 | - | 4.97 | 76,354 |
| Countries in a Ring of the World Map | 0 | - | 4.99 | 154,391 |
| Countries in a Strip of the World Map | 0 | - | 4.99 | 73,514 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,154 |
| Countries in a Stewart of the World Map | 0 | - | 4.99 | 55,061 |
| 20 Random Country Flags | 0 | - | 4.99 | 611,925 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 30,915 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,717 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,055 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,777 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,668 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,659 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,796 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,934 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,336 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,400 |
| Widest Countries East to West | 0 | - | 4.92 | 129,465 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,410 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,114 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,042 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,606 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,369 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,664 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,292 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,752 |
| Countries with Double Letters | 0 | - | 4.97 | 95,315 |
| Countries that End in N | 0 | - | 4.95 | 170,346 |
| Countries with Five Letters | 0 | - | 4.96 | 281,178 |
| Countries with Six Letters | 0 | - | 4.94 | 212,758 |
| Countries with W | 0 | - | 4.97 | 159,678 |
| Countries with Z | 0 | - | 4.98 | 290,568 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,945 |
| Countries That End in U | 0 | - | 4.95 | 120,501 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,947 |
| Countries that End in O | 0 | - | 4.92 | 159,273 |
| Countries that End in R | 0 | - | 4.87 | 118,795 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,561 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,561 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,294 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,197 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,798 |
| Countries That End in Y | 0 | - | 4.91 | 185,703 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,475 |
