| All Country Flags of the World | 0 | - | 5.00 | 3,665,405 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,431 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,039 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,511 |
| Flags with Crescents | 0 | - | 4.98 | 169,630 |
| Country Flag Trivia | 0 | - | 4.81 | 57,073 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,808 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,534 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,467 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,291 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,254 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,836 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,850 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,076 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,554 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,358 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,442 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,121 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,267 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,609 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,582 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,516 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,562 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,670 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,445 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,118 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,541 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,732 |
| 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 | 99,463 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,795 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,001 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,097 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,924 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,480 |
| Flags of North and South America | 0 | - | 4.99 | 373,160 |
| 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 | 44,476 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,125 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,967 |
| 20 Random Country Flags | 0 | - | 4.99 | 612,604 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,747 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,172 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,577 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,587 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,522 |
| Flag Maths | 0 | - | 4.64 | 57,763 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,848 |
| 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 | 64,535 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,603 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,783 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,478 |
| Similar Flags #1 | 0 | - | 4.75 | 130,058 |
| Similar Flags #2 | 0 | - | 4.74 | 137,338 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,877 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,033 |
| 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 | 61,061 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,282 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 24,940 |
| 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 | 58,920 |
| Name a Valid Country Flag | 0 | - | 4.69 | 75,738 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,453 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,146 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,222 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,940 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,515 |
| Countries by Picture #1 | 0 | - | 4.51 | 115,148 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,612 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,874 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,419 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,714 |
| Pixelated World Map | 0 | - | 5.00 | 143,406 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,419 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,444 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,123 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,642 |
| 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 | 46,421 |
| Countries by Picture #2 | 0 | - | 4.38 | 71,746 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,337 |
| Countries by Picture #6 | 0 | - | 4.16 | 36,930 |
| 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 | 64,485 |
| Flags of Oceania | 0 | - | 5.00 | 259,493 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,350 |
| Flags of WW1 | 0 | - | 4.60 | 38,391 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,176 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,029 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,870 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,221 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,774 |
| Boundary Waters | 0 | - | 4.92 | 88,472 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,170 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,099 |
| 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 | 47,465,678 |
| Landlocked Countries | 0 | - | 4.99 | 420,601 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 572,488 |
| 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 | 86,025 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,823 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,312 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,001 |
| Merged Countries #2 | 0 | - | 4.96 | 99,089 |
| Merged Countries #6 | 0 | - | 4.90 | 73,290 |
| Merged Countries #7 | 0 | - | 4.93 | 82,637 |
| Geography by Picture - A | 0 | - | 4.39 | 60,266 |
| 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 | 38,472 |
| 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 | 84,373 |
| Islands by Picture | 0 | - | 4.28 | 107,003 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,611 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,840 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,988 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,190 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,363 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,923 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,580 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,071 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,277 |
| Island Countries | 0 | - | 4.99 | 710,432 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,749 |
| Himalayan Countries | 0 | - | 4.95 | 138,111 |
| Andean Countries | 0 | - | 4.95 | 84,279 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,499 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,354 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,128 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,577 |
| Danube Countries | 0 | - | 4.97 | 71,842 |
| 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 | 83,988 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,438 |
| European Landlocked Countries | 0 | - | 4.99 | 146,977 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,388 |
| 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 | 53,508 |
| 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 | 73,118 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,509 |
| Countries in the Alps | 0 | - | 4.87 | 117,965 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,582 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,730 |
| 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 | 116,316 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,835 |
| 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 | 58,080 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,709 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,076 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,355 |
| 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 | 59,693 |
| 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 | 243,215 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,690 |
