| All Country Flags of the World | 0 | - | 5.00 | 3,595,700 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,524,954 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,771 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,221 |
| Flags with Crescents | 0 | - | 4.98 | 167,338 |
| Country Flag Trivia | 0 | - | 4.81 | 55,805 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,269 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,361 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,763 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,365 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,292 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 51,951 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,484 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 113,989 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,588 |
| Flags that are Red & White Only | 0 | - | 4.97 | 155,807 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 144,393 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 73,476 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,477 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,484 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,182 |
| Country Flags with the Most Blue | 0 | - | 4.87 | 91,591 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,676 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,478 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,160 |
| Country Flags with the Most Black | 0 | - | 4.95 | 96,727 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,207 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,614 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,687 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,299 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,605 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,647 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,869 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 97,982 |
| Flags of North and South America | 0 | - | 4.99 | 365,940 |
| Flags to Languages | 0 | - | 4.95 | 172,368 |
| Former Flags | 0 | - | 4.97 | 106,548 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,565 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 50,138 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,687 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,458 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,183 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,665 |
| 20 Random Country Flags | 0 | - | 4.99 | 603,717 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 111,996 |
| Countries by Bordering Flags #2 | 0 | - | 4.85 | 82,547 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,405 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,339 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,129 |
| Flag Maths | 0 | - | 4.78 | 57,665 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,249 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,908 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,407 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,326 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,256 |
| World Coats of Arms | 0 | - | 4.99 | 63,796 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,253 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,663 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,710 |
| Country Flags with the Southern Cross | 0 | - | 4.78 | 61,291 |
| Similar Flags #1 | 0 | - | 4.74 | 128,998 |
| Similar Flags #2 | 0 | - | 4.74 | 136,259 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,431 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,050 |
| Emoji Flags | 0 | - | 4.35 | 43,792 |
| Countries by Road Signs | 0 | - | 4.98 | 53,013 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 60,965 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,956 |
| Select the World Flags | 0 | - | 4.27 | 37,373 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,220 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,522 |
| Name a Valid Country Flag | 0 | - | 4.64 | 74,719 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 70,997 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,646 |
| Countries by Satellite Image #4 | 0 | - | 4.61 | 66,777 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 46,656 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,198 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,319 |
| Countries by Picture #3 | 0 | - | 4.51 | 58,948 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,340 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,610 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,689 |
| Pixelated World Map | 0 | - | 5.00 | 142,187 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,597 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,430 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,306 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,234 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,618 |
| European Cities by Picture #2 | 0 | - | 4.45 | 37,910 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,199 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,889 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,019 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,519 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,134 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,899 |
| Geography by Picture - B | 0 | - | 4.42 | 55,389 |
| Geography by Picture - H | 0 | - | 4.49 | 58,020 |
| Geography by Picture - N | 0 | - | 4.45 | 42,035 |
| Geography by Picture - R | 0 | - | 4.55 | 40,867 |
| Geography by Picture - T | 0 | - | 4.54 | 57,653 |
| Merged Company Logos #3 | 0 | - | 4.52 | 63,901 |
| Flags of Oceania | 0 | - | 5.00 | 254,750 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,697 |
| Flags of WW1 | 0 | - | 4.60 | 37,889 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 26,893 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,370 |
| Pixelated Africa Map | 0 | - | 4.98 | 98,982 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,315 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,688 |
| Boundary Waters | 0 | - | 4.92 | 87,998 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,790 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,194 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,161 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,778 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,666 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,865,077 |
| Landlocked Countries | 0 | - | 4.99 | 413,010 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 551,092 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,008 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 128,966 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,957 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,618 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,622 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,779 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,290 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,734 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,757 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,027 |
| Merged Countries #2 | 0 | - | 4.96 | 98,403 |
| Merged Countries #6 | 0 | - | 4.91 | 72,656 |
| Merged Countries #7 | 0 | - | 4.93 | 81,902 |
| Geography by Picture - A | 0 | - | 4.39 | 60,027 |
| Geography by Picture - D | 0 | - | 4.15 | 45,469 |
| Geography by Picture - F | 0 | - | 4.31 | 50,810 |
| Geography by Picture - G | 0 | - | 4.38 | 47,774 |
| Geography by Picture - J | 0 | - | 4.16 | 38,317 |
| Geography by Picture - K | 0 | - | 4.28 | 32,997 |
| Geography by Picture - C | 0 | - | 4.31 | 56,893 |
| Geography by Picture - L | 0 | - | 4.37 | 58,732 |
| Geography by Picture - M | 0 | - | 4.14 | 40,331 |
| Geography by Picture - P | 0 | - | 4.24 | 42,286 |
| Geography by Picture - S | 0 | - | 4.38 | 46,897 |
| Merged Company Logos #4 | 0 | - | 4.39 | 51,992 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,169 |
| Islands by Picture | 0 | - | 4.29 | 105,783 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,117 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,918 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,495 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,858 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,196 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 122,879 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,454 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,884 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,083 |
| Island Countries | 0 | - | 4.99 | 707,319 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,320 |
| Himalayan Countries | 0 | - | 4.95 | 135,119 |
| Andean Countries | 0 | - | 4.94 | 82,695 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,114 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,031 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,793 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,499 |
| Danube Countries | 0 | - | 4.97 | 71,015 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,666 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,470 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,326 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,241 |
| European Landlocked Countries | 0 | - | 4.99 | 145,684 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,079 |
| Countries with the Most Species | 0 | - | 4.99 | 95,204 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,236 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,180 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,338 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,916 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,530 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,889 |
| Countries in the Alps | 0 | - | 4.87 | 116,715 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,497 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,116 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,957 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,341 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,079 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,944 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,492 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,699 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,542 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,988 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,171 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,005 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,388 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,693 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,690 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,922 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,582 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,209 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,699 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,921 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,420 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,553 |
| Largest Countries By Category | 0 | - | 4.97 | 156,653 |
