| All Country Flags of the World | 0 | - | 5.00 | 3,596,007 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,525,020 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,801 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,237 |
| Flags with Crescents | 0 | - | 4.98 | 167,350 |
| Country Flag Trivia | 0 | - | 4.81 | 55,808 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,276 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,365 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,773 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,369 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,295 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 51,955 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,506 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,004 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,617 |
| Flags that are Red & White Only | 0 | - | 4.97 | 156,711 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 144,413 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 73,517 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,487 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,499 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,198 |
| Country Flags with the Most Blue | 0 | - | 4.87 | 91,604 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,688 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,486 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,167 |
| Country Flags with the Most Black | 0 | - | 4.95 | 96,732 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,211 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,619 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,690 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,302 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,611 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,650 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,875 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 97,986 |
| Flags of North and South America | 0 | - | 4.99 | 366,016 |
| Flags to Languages | 0 | - | 4.95 | 172,372 |
| Former Flags | 0 | - | 4.97 | 106,554 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,572 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.96 | 50,138 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,694 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,466 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,185 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,667 |
| 20 Random Country Flags | 0 | - | 4.99 | 603,759 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 111,997 |
| Countries by Bordering Flags #2 | 0 | - | 4.85 | 82,549 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,414 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,347 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,146 |
| Flag Maths | 0 | - | 4.78 | 57,665 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,256 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,909 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,408 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,327 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,256 |
| World Coats of Arms | 0 | - | 4.99 | 63,799 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,256 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,668 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,716 |
| Country Flags with the Southern Cross | 0 | - | 4.78 | 61,293 |
| Similar Flags #1 | 0 | - | 4.74 | 129,006 |
| Similar Flags #2 | 0 | - | 4.74 | 136,265 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,433 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,053 |
| Emoji Flags | 0 | - | 4.35 | 43,793 |
| Countries by Road Signs | 0 | - | 4.98 | 53,021 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 60,969 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,958 |
| Select the World Flags | 0 | - | 4.27 | 37,374 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,223 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,522 |
| Name a Valid Country Flag | 0 | - | 4.64 | 74,723 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 70,998 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,647 |
| Countries by Satellite Image #4 | 0 | - | 4.61 | 66,778 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 46,657 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,198 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,322 |
| Countries by Picture #3 | 0 | - | 4.51 | 58,949 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,342 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,689 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,731 |
| Pixelated World Map | 0 | - | 5.00 | 142,261 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,600 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,487 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,312 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,236 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,625 |
| European Cities by Picture #2 | 0 | - | 4.45 | 37,910 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,207 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,890 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,020 |
| 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 | 35,900 |
| Geography by Picture - B | 0 | - | 4.42 | 55,390 |
| Geography by Picture - H | 0 | - | 4.49 | 58,022 |
| Geography by Picture - N | 0 | - | 4.45 | 42,036 |
| 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 | 63,904 |
| Flags of Oceania | 0 | - | 5.00 | 254,764 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,706 |
| Flags of WW1 | 0 | - | 4.60 | 37,890 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 26,893 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,375 |
| Pixelated Africa Map | 0 | - | 4.98 | 98,988 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,321 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,698 |
| Boundary Waters | 0 | - | 4.92 | 88,003 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,790 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,198 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,163 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,782 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,668 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,867,730 |
| Landlocked Countries | 0 | - | 4.99 | 413,044 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 551,224 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,009 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 128,968 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,959 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,619 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,624 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,780 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,295 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,734 |
| World Capitals Quiz | 0 | - | 5.00 | 5,027,015 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,266 |
| Merged Countries #2 | 0 | - | 4.96 | 98,405 |
| Merged Countries #6 | 0 | - | 4.91 | 72,658 |
| Merged Countries #7 | 0 | - | 4.93 | 81,904 |
| Geography by Picture - A | 0 | - | 4.39 | 60,028 |
| 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 | 32,998 |
| 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 | 40,332 |
| Geography by Picture - P | 0 | - | 4.24 | 42,286 |
| Geography by Picture - S | 0 | - | 4.38 | 46,898 |
| Merged Company Logos #4 | 0 | - | 4.39 | 51,992 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,169 |
| Islands by Picture | 0 | - | 4.29 | 105,786 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,118 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,927 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,499 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,861 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,229 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 122,881 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,534 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,896 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,097 |
| Island Countries | 0 | - | 4.99 | 707,333 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,332 |
| Himalayan Countries | 0 | - | 4.95 | 135,121 |
| Andean Countries | 0 | - | 4.94 | 82,704 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,121 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,041 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,798 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,502 |
| Danube Countries | 0 | - | 4.97 | 71,015 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,676 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,474 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,334 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,248 |
| European Landlocked Countries | 0 | - | 4.99 | 145,689 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,084 |
| Countries with the Most Species | 0 | - | 4.99 | 95,206 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,240 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,181 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,341 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,918 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,533 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,890 |
| Countries in the Alps | 0 | - | 4.87 | 116,717 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,498 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,124 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,960 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,347 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,079 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,945 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,702 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,680 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,992 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,172 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,006 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,390 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,695 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,696 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,925 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,582 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,212 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,707 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,938 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,430 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,555 |
| Largest Countries By Category | 0 | - | 4.97 | 156,659 |
