| All Country Flags of the World | 0 | - | 5.00 | 3,646,543 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,377 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,165 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,378 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,419 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,849 |
| Flags with Crescents | 0 | - | 4.98 | 168,993 |
| Country Flag Trivia | 0 | - | 4.81 | 56,741 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,367 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,207 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 86,985 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,073 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,981 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,590 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,259 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,243 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,512 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,030 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,020 |
| Flags that are Red & White Only | 0 | - | 4.97 | 163,959 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,634 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,741 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,288 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,277 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,162 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,309 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,397 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,162 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,866 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,328 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,606 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,987 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,188 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,237 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,545 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,761 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,859 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,644 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,341 |
| Flags of North and South America | 0 | - | 4.99 | 371,749 |
| Flags to Languages | 0 | - | 4.95 | 173,343 |
| Former Flags | 0 | - | 4.97 | 107,439 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,854 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,276 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,882 |
| 20 Random Country Flags | 0 | - | 4.99 | 610,209 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,536 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,004 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,254 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,887 |
| Flag Maths | 0 | - | 4.64 | 57,741 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,223 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,338 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,712 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,649 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,436 |
| World Coats of Arms | 0 | - | 4.99 | 64,313 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,228 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,503 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,953 |
| Similar Flags #1 | 0 | - | 4.75 | 129,743 |
| Similar Flags #2 | 0 | - | 4.74 | 137,054 |
| Emoji Flags | 0 | - | 4.35 | 43,999 |
| Countries by Road Signs | 0 | - | 4.98 | 53,616 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,507 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,419 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,183 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 24,242 |
| Select the World Flags | 0 | - | 4.27 | 37,656 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,738 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,818 |
| Name a Valid Country Flag | 0 | - | 4.68 | 75,456 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,285 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,958 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,061 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,843 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,411 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,804 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,218 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,687 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,472 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,215 |
| Pixelated World Map | 0 | - | 5.00 | 143,118 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,004 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,922 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,277 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,137 |
| Cities by Satellite #1 | 0 | - | 4.37 | 80,846 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,022 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,216 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,847 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,300 |
| Countries by Picture #6 | 0 | - | 4.15 | 36,026 |
| Geography by Picture - B | 0 | - | 4.42 | 55,553 |
| Geography by Picture - H | 0 | - | 4.50 | 58,176 |
| Geography by Picture - N | 0 | - | 4.45 | 42,163 |
| Geography by Picture - R | 0 | - | 4.56 | 40,979 |
| Geography by Picture - T | 0 | - | 4.54 | 57,797 |
| Flags of Oceania | 0 | - | 5.00 | 258,062 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,878 |
| Flags of WW1 | 0 | - | 4.60 | 38,271 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,861 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,624 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,985 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,472 |
| Boundary Waters | 0 | - | 4.92 | 88,361 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,061 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,878 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,118 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,304 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,241 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,306,882 |
| Landlocked Countries | 0 | - | 4.99 | 418,438 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 567,001 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,379 |
| Satellite Images #1 | 0 | - | 4.46 | 129,282 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,231 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,856 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,850 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,930 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,820 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,803 |
| World Capitals Quiz | 0 | - | 5.00 | 5,061,486 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,365 |
| Merged Countries #2 | 0 | - | 4.96 | 98,877 |
| Merged Countries #6 | 0 | - | 4.90 | 73,110 |
| Merged Countries #7 | 0 | - | 4.93 | 82,427 |
| Geography by Picture - A | 0 | - | 4.39 | 60,192 |
| Geography by Picture - D | 0 | - | 4.15 | 45,605 |
| Geography by Picture - F | 0 | - | 4.31 | 50,942 |
| Geography by Picture - G | 0 | - | 4.38 | 47,907 |
| Geography by Picture - J | 0 | - | 4.16 | 38,426 |
| Geography by Picture - K | 0 | - | 4.29 | 33,091 |
| Geography by Picture - C | 0 | - | 4.31 | 57,030 |
| Geography by Picture - L | 0 | - | 4.37 | 58,897 |
| Geography by Picture - M | 0 | - | 4.14 | 40,418 |
| Geography by Picture - P | 0 | - | 4.24 | 42,394 |
| Geography by Picture - S | 0 | - | 4.38 | 47,004 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,300 |
| Islands by Picture | 0 | - | 4.29 | 106,686 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,481 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,588 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,611 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,836 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,625 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,661 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,155 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,490 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,892 |
| Island Countries | 0 | - | 4.99 | 709,579 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,731 |
| Himalayan Countries | 0 | - | 4.94 | 137,196 |
| Andean Countries | 0 | - | 4.95 | 83,806 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,055 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,457 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,744 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,276 |
| Danube Countries | 0 | - | 4.97 | 71,603 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,471 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,001 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,556 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,622 |
| European Landlocked Countries | 0 | - | 4.99 | 146,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,053 |
| Countries with the Most Species | 0 | - | 4.99 | 102,857 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,191 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,570 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,272 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,942 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,322 |
| Countries in the Alps | 0 | - | 4.87 | 117,613 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,085 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,281 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,378 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,037 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,410 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,220 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,141 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,936 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,513 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,449 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,312 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,888 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,159 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,176 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,093 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,028 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,545 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,462 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,164 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,117 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,960 |
| Largest Countries By Category | 0 | - | 4.97 | 157,559 |
| Countries by Countries | 0 | - | 4.96 | 62,794 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,141 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,147 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Merged Country Flags | 0 | - | 4.88 | 106,547 |
