| All Country Flags of the World | 0 | - | 5.00 | 3,620,471 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,529,673 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,978 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,807 |
| Flags with Crescents | 0 | - | 4.98 | 168,090 |
| Country Flag Trivia | 0 | - | 4.81 | 56,209 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,766 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,731 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,299 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,695 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,603 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,263 |
| Flags of North and South America | 0 | - | 4.99 | 369,260 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,594 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,973 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,451 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 61,659 |
| Flags that are Red & White Only | 0 | - | 4.97 | 163,289 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,140 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,033 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,956 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,950 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,733 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,995 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,075 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,846 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 98,558 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,037 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,426 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,813 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,954 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,923 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,222 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,397 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,531 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,184 |
| Flags to Languages | 0 | - | 4.95 | 172,848 |
| Former Flags | 0 | - | 4.97 | 107,007 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,730 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,177 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,996 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,278 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,506 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,788 |
| 20 Random Country Flags | 0 | - | 4.99 | 607,184 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,261 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,809 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,813 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,811 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,009 |
| Flag Maths | 0 | - | 4.69 | 57,696 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,769 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,111 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,557 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,754 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,487 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,341 |
| World Coats of Arms | 0 | - | 4.99 | 64,051 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,124 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,335 |
| Similar Flags #1 | 0 | - | 4.74 | 129,374 |
| Similar Flags #2 | 0 | - | 4.74 | 136,648 |
| Emoji Flags | 0 | - | 4.35 | 43,890 |
| Countries by Road Signs | 0 | - | 4.98 | 53,301 |
| Countries by Partial Flag Images #8 | 0 | - | 4.77 | 22,716 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,189 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,687 |
| Select the World Flags | 0 | - | 4.27 | 37,497 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,076 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,463 |
| Name a Valid Country Flag | 0 | - | 4.67 | 75,075 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,152 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,799 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 66,947 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,757 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,306 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,548 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,083 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,516 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,610 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,232,149 |
| Flags of Asia Quiz | 0 | - | 4.99 | 607,859 |
| Pixelated World Map | 0 | - | 5.00 | 142,741 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,357 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,693 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,942 |
| European Cities by Picture #2 | 0 | - | 4.45 | 38,024 |
| Flags of Oceania | 0 | - | 5.00 | 256,418 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,295 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,621 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,302 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,665 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,108 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,493 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,960 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,116 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,670 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,214 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,967 |
| Geography by Picture - B | 0 | - | 4.42 | 55,474 |
| Geography by Picture - H | 0 | - | 4.50 | 58,093 |
| Geography by Picture - N | 0 | - | 4.45 | 42,088 |
| Geography by Picture - R | 0 | - | 4.56 | 40,918 |
| Geography by Picture - T | 0 | - | 4.54 | 57,725 |
| Flags of WW1 | 0 | - | 4.60 | 38,085 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,768 |
| Boundary Waters | 0 | - | 4.92 | 88,152 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,909 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,537 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,639 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,028 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,934 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,081,329 |
| Landlocked Countries | 0 | - | 4.99 | 415,635 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 558,721 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,218 |
| Merged Countries #2 | 0 | - | 4.96 | 98,626 |
| Merged Countries #6 | 0 | - | 4.90 | 72,871 |
| Merged Countries #7 | 0 | - | 4.92 | 82,116 |
| Satellite Images #1 | 0 | - | 4.46 | 129,126 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,090 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,737 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,734 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,864 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,562 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,306 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,229 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,137 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,398 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,239 |
| World Capitals Quiz | 0 | - | 5.00 | 5,044,470 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,418 |
| Himalayan Countries | 0 | - | 4.95 | 136,073 |
| Andean Countries | 0 | - | 4.95 | 83,223 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,539 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,703 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,228 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,870 |
| Danube Countries | 0 | - | 4.97 | 71,287 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,043 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,741 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,923 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,867 |
| European Landlocked Countries | 0 | - | 4.99 | 145,997 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,578 |
| Countries with the Most Species | 0 | - | 4.99 | 95,360 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,704 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,278 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,448 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,083 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,735 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,103 |
| Countries in the Alps | 0 | - | 4.86 | 117,164 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,789 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,650 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,175 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,611 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,415 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,165 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,834 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,913 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,714 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,229 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,284 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,155 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,641 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,904 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,916 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,522 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,816 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,362 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,075 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,427 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,283 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,747 |
| Largest Countries By Category | 0 | - | 4.97 | 157,080 |
| Countries by Countries | 0 | - | 4.96 | 62,467 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,720 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,040 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,387 |
| Merged Country Flags | 0 | - | 4.88 | 106,235 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,386 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,310 |
| Colourful Countries of the World | 0 | - | 4.99 | 59,238 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,988 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,733,028 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,918 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,560 |
| Geography by Picture - A | 0 | - | 4.39 | 60,104 |
| Geography by Picture - D | 0 | - | 4.15 | 45,539 |
| Geography by Picture - F | 0 | - | 4.31 | 50,873 |
| Geography by Picture - G | 0 | - | 4.38 | 47,842 |
| Geography by Picture - J | 0 | - | 4.16 | 38,364 |
| Geography by Picture - K | 0 | - | 4.29 | 33,044 |
| Geography by Picture - C | 0 | - | 4.31 | 56,965 |
| Geography by Picture - L | 0 | - | 4.37 | 58,822 |
| Geography by Picture - M | 0 | - | 4.14 | 40,370 |
| Geography by Picture - P | 0 | - | 4.24 | 42,333 |
| Geography by Picture - S | 0 | - | 4.38 | 46,950 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 65,940 |
