| All Country Flags of the World | 0 | - | 5.00 | 3,665,471 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,442 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,043 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,511 |
| Flags with Crescents | 0 | - | 4.98 | 169,630 |
| Country Flag Trivia | 0 | - | 4.81 | 57,074 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,809 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,536 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,468 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,292 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,255 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,836 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,852 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,079 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,556 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,360 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,447 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,123 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,271 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,611 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,583 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,517 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,564 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,673 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,448 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,120 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,543 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,733 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,133 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,402 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,464 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,797 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,002 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,098 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,925 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,480 |
| Flags of North and South America | 0 | - | 4.99 | 373,161 |
| Flags to Languages | 0 | - | 4.95 | 173,661 |
| Former Flags | 0 | - | 4.97 | 107,752 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,960 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,547 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,477 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,126 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,967 |
| 20 Random Country Flags | 0 | - | 4.99 | 612,611 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,747 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,174 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,578 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,587 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,523 |
| Flag Maths | 0 | - | 4.64 | 57,763 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,849 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,696 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,964 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,778 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,507 |
| World Coats of Arms | 0 | - | 4.99 | 64,538 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,603 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,785 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,478 |
| Similar Flags #1 | 0 | - | 4.75 | 130,058 |
| Similar Flags #2 | 0 | - | 4.74 | 137,339 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,877 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,034 |
| Emoji Flags | 0 | - | 4.35 | 44,102 |
| Countries by Road Signs | 0 | - | 4.98 | 53,840 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,626 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,062 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,283 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 24,941 |
| Select the World Flags | 0 | - | 4.27 | 37,752 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,983 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,921 |
| Name a Valid Country Flag | 0 | - | 4.69 | 75,739 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,454 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,146 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,223 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,941 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,516 |
| Countries by Picture #1 | 0 | - | 4.51 | 115,170 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,614 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,875 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,446 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,720 |
| Pixelated World Map | 0 | - | 5.00 | 143,407 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,419 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,458 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,124 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,644 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,547 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,206 |
| Cities by Satellite #1 | 0 | - | 4.37 | 81,100 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,077 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,422 |
| Countries by Picture #2 | 0 | - | 4.38 | 71,749 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,338 |
| Countries by Picture #6 | 0 | - | 4.16 | 36,932 |
| Geography by Picture - B | 0 | - | 4.42 | 55,613 |
| Geography by Picture - H | 0 | - | 4.50 | 58,240 |
| Geography by Picture - N | 0 | - | 4.45 | 42,209 |
| Geography by Picture - R | 0 | - | 4.56 | 41,032 |
| Geography by Picture - T | 0 | - | 4.54 | 57,851 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,487 |
| Flags of Oceania | 0 | - | 5.00 | 259,494 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,352 |
| Flags of WW1 | 0 | - | 4.60 | 38,392 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,177 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,029 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,873 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,221 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,775 |
| Boundary Waters | 0 | - | 4.92 | 88,472 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,171 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,100 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,468 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,470 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,420 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,466,256 |
| Landlocked Countries | 0 | - | 4.99 | 420,606 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 572,510 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,484 |
| Satellite Images #1 | 0 | - | 4.47 | 129,391 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,320 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,929 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,940 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,997 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,026 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,823 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,366 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,076 |
| Merged Countries #2 | 0 | - | 4.96 | 99,090 |
| Merged Countries #6 | 0 | - | 4.90 | 73,291 |
| Merged Countries #7 | 0 | - | 4.93 | 82,638 |
| Geography by Picture - A | 0 | - | 4.39 | 60,267 |
| Geography by Picture - D | 0 | - | 4.15 | 45,668 |
| Geography by Picture - F | 0 | - | 4.31 | 51,014 |
| Geography by Picture - G | 0 | - | 4.38 | 47,956 |
| Geography by Picture - J | 0 | - | 4.16 | 38,473 |
| Geography by Picture - K | 0 | - | 4.29 | 33,135 |
| Geography by Picture - C | 0 | - | 4.31 | 57,081 |
| Geography by Picture - L | 0 | - | 4.37 | 58,976 |
| Geography by Picture - M | 0 | - | 4.14 | 40,470 |
| Geography by Picture - P | 0 | - | 4.24 | 42,444 |
| Geography by Picture - S | 0 | - | 4.38 | 47,047 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,453 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,374 |
| Islands by Picture | 0 | - | 4.28 | 107,004 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,612 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,841 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,994 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,191 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,368 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,923 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,609 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,072 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,280 |
| Island Countries | 0 | - | 4.99 | 710,439 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,752 |
| Himalayan Countries | 0 | - | 4.95 | 138,111 |
| Andean Countries | 0 | - | 4.95 | 84,281 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,501 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,356 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,128 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,579 |
| Danube Countries | 0 | - | 4.97 | 71,843 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,806 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,245 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,991 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,439 |
| European Landlocked Countries | 0 | - | 4.99 | 146,978 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,390 |
| Countries with the Most Species | 0 | - | 4.99 | 103,100 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,544 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,509 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,661 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,448 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,119 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,509 |
| Countries in the Alps | 0 | - | 4.87 | 117,967 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,602 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,731 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,461 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,318 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,836 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,476 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,344 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,081 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,710 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,422 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,077 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,357 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,369 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,555 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,184 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,694 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,832 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,219 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,692 |
