| All Country Flags of the World | 0 | - | 5.00 | 3,063,072 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,391,825 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,016,244 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 680,998 |
| Flags with Crescents | 0 | - | 4.98 | 146,612 |
| Country Flag Trivia | 0 | - | 4.81 | 45,418 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.99 | 78,224 |
| Country Flags with the Union Jack | 0 | - | 4.83 | 57,708 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.82 | 43,292 |
| Countries by Partial Flag Images #1 | 0 | - | 4.97 | 115,099 |
| Countries by Partial Flag Images #3 | 0 | - | 4.99 | 90,506 |
| Flags with the Most Stars | 0 | - | 4.90 | 108,517 |
| Flags that are Red & White Only | 0 | - | 4.97 | 132,506 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 128,061 |
| Flags of the Countries with Four Letters | 0 | - | 4.93 | 37,679 |
| Four Countries with Similar Flags #2 | 0 | - | 4.89 | 36,639 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 44,547 |
| Country Flags with the Most Red | 0 | - | 4.97 | 93,823 |
| Country Flags with the Most Blue | 0 | - | 4.90 | 81,183 |
| Country Flags with the Most Green | 0 | - | 4.95 | 81,873 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 83,321 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 89,414 |
| Country Flags with the Most Black | 0 | - | 4.94 | 87,817 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.94 | 56,171 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.93 | 44,610 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 82,902 |
| Countries by Partial Flag Images #4 | 0 | - | 4.90 | 63,779 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 49,502 |
| Countries With Blue and White Flags | 0 | - | 4.89 | 82,750 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 316,671 |
| Former Flags | 0 | - | 4.97 | 82,969 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 35,160 |
| Countries by Partial Flag Images #6 | 0 | - | 4.90 | 28,581 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.92 | 27,187 |
| Random Flag to Country | 0 | - | 4.99 | 516,723 |
| Countries by Bordering Flags #1 | 0 | - | 4.92 | 95,181 |
| Countries by Bordering Flags #2 | 0 | - | 4.85 | 76,343 |
| Flags of the Mediterranean | 0 | - | 4.93 | 126,030 |
| Country Flags Multiple Choice | 0 | - | 4.98 | 117,128 |
| Random Flags Quiz | 0 | - | 4.41 | 259,637 |
| Flags of Countries in the World Cup 2018 | 0 | - | 4.83 | 87,753 |
| Countries by Satellite Image #1 | 0 | - | 4.88 | 131,678 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 76,706 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.87 | 45,000 |
| Countries by Coat of Arms #1 | 0 | - | 4.95 | 58,910 |
| World Coats of Arms | 0 | - | 4.99 | 56,783 |
| Category Elimination - Country Flags #1 | 0 | - | 4.97 | 128,017 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 42,743 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 153,757 |
| Country Flags with the Southern Cross | 0 | - | 4.72 | 52,187 |
| Similar Flags #1 | 0 | - | 4.75 | 112,743 |
| Similar Flags #2 | 0 | - | 4.78 | 114,969 |
| Emoji Flags | 0 | - | 4.34 | 41,144 |
| Countries by Road Signs | 0 | - | 4.98 | 46,355 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 54,884 |
| Islands by Shape #2 | 0 | - | 4.87 | 45,364 |
| Select the World Flags | 0 | - | 4.31 | 33,953 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.76 | 23,948 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 67,883 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.65 | 54,943 |
| Name a Valid Country Flag | 0 | - | 4.56 | 49,218 |
| Countries by Satellite Image #3 | 0 | - | 4.65 | 66,935 |
| Countries by Satellite Image #2 | 0 | - | 4.79 | 65,034 |
| Countries by Satellite Image #4 | 0 | - | 4.66 | 62,946 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 44,253 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 41,709 |
| Countries by Coat of Arms #2 | 0 | - | 4.78 | 32,567 |
| Countries by Picture #1 | 0 | - | 4.51 | 91,132 |
| Countries by Picture #3 | 0 | - | 4.52 | 55,302 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 43,064 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,068,265 |
| Flags of Asia Quiz | 0 | - | 4.99 | 535,656 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,279 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,586 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 190,925 |
| Pixelated World Map | 0 | - | 5.00 | 130,739 |
| Flags of Africa Quiz | 0 | - | 4.99 | 397,075 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 68,262 |
| Satellite Images - Europe | 0 | - | 4.44 | 83,089 |
| European Cities by Picture #2 | 0 | - | 4.44 | 35,194 |
| Cities by Satellite #1 | 0 | - | 4.37 | 72,096 |
| Cities by Satellite #2 | 0 | - | 4.47 | 23,093 |
| Countries by Picture #4 | 0 | - | 4.17 | 42,416 |
| Countries by Picture #2 | 0 | - | 4.37 | 65,190 |
| Countries by Picture #5 | 0 | - | 4.27 | 40,396 |
| Countries by Picture #6 | 0 | - | 4.14 | 34,021 |
| Geography by Picture - H | 0 | - | 4.51 | 55,659 |
| Geography by Picture - N | 0 | - | 4.46 | 39,968 |
| Geography by Picture - R | 0 | - | 4.54 | 38,957 |
| Geography by Picture - T | 0 | - | 4.56 | 55,280 |
| Flags of Oceania | 0 | - | 5.00 | 220,951 |
| Three Band Flags of Europe | 0 | - | 4.97 | 174,512 |
| Pixelated Africa Map | 0 | - | 4.98 | 89,865 |
| Pixelated Asia Map | 0 | - | 4.90 | 64,538 |
| Pixelated Europe Map | 0 | - | 4.90 | 111,097 |
| Boundary Waters | 0 | - | 4.93 | 82,076 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,528 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.92 | 47,862 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,651 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 61,640 |
| Countries with the Most Arabic Speakers | 0 | - | 4.91 | 71,752 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,822,405 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,131 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 378,884 |
| Satellite Images Quiz #1 | 0 | - | 4.47 | 123,751 |
| Satellite Images Quiz #2 | 0 | - | 4.65 | 104,530 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 85,081 |
| Satellite Images Quiz #5 | 0 | - | 4.46 | 46,342 |
| Satellite Images Quiz #6 | 0 | - | 4.53 | 36,104 |
| Cities by Picture #1 | 0 | - | 4.70 | 78,453 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.51 | 23,687 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,829 |
| World Capitals Quiz | 0 | - | 5.00 | 4,582,826 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,179,795 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 57,775 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 53,763 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,234,217 |
| Merged Countries #2 | 0 | - | 4.96 | 90,849 |
| Merged Countries #4 | 0 | - | 4.86 | 85,855 |
| Merged Countries #6 | 0 | - | 4.90 | 66,338 |
| Merged Countries #7 | 0 | - | 4.94 | 75,530 |
| Geography by Picture - A | 0 | - | 4.35 | 57,387 |
| Geography by Picture - B | 0 | - | 4.37 | 52,879 |
| Geography by Picture - D | 0 | - | 4.13 | 43,526 |
| Geography by Picture - F | 0 | - | 4.29 | 48,701 |
| Geography by Picture - G | 0 | - | 4.39 | 45,749 |
| Geography by Picture - J | 0 | - | 4.14 | 36,683 |
| Geography by Picture - C | 0 | - | 4.28 | 54,626 |
| Geography by Picture - L | 0 | - | 4.34 | 56,294 |
| Geography by Picture - M | 0 | - | 4.11 | 38,678 |
| Geography by Picture - P | 0 | - | 4.26 | 40,491 |
| Geography by Picture - S | 0 | - | 4.35 | 44,940 |
| Islands by Shape #1 | 0 | - | 4.28 | 71,850 |
| Islands by Picture | 0 | - | 4.29 | 94,286 |
| World Geography on a Map #1 | 0 | - | 4.93 | 68,342 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 85,752 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,973 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,684 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,570 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.94 | 111,732 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,410,556 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,440 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,168 |
| Members of the Arab League | 0 | - | 4.86 | 66,565 |
| Island Countries Quiz | 0 | - | 4.99 | 669,264 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,722 |
| Himalayan Countries | 0 | - | 4.94 | 108,659 |
| Andean Countries | 0 | - | 4.91 | 60,358 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,533 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,953 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,584 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,907 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,347 |
| Danube Countries | 0 | - | 4.96 | 57,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,275 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,338 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,825 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,503 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,155 |
| European Landlocked Countries | 0 | - | 4.99 | 137,282 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,907 |
| Countries with the Most Species | 0 | - | 4.99 | 90,083 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,447 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,059 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,348 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,136 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,928 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,163 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,996 |
| Countries in the Alps | 0 | - | 4.84 | 103,973 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,540 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,748 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,357 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,464 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,985 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,417 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,635 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,828 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,741 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,476 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,242 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,073 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,060 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,653 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,744 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,312 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,782 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,015 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,114 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,152 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,650 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,886 |
| Largest Countries By Category | 0 | - | 4.97 | 146,558 |
| Countries by Countries | 0 | - | 4.95 | 55,695 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,670 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,258 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,171 |
| All Countries by Population With a Map | 0 | - | 4.99 | 65,291 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 78,102 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,746 |
