| All Country Flags of the World | 0 | - | 5.00 | 3,675,980 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,278 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,932 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,155 |
| Flags with Crescents | 0 | - | 4.98 | 169,977 |
| Country Flag Trivia | 0 | - | 4.81 | 57,257 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,038 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,729 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,694 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,437 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,411 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,989 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,132 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,320 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,827 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,531 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,657 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,370 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,557 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,777 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,710 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,701 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,724 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,820 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,604 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,245 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,687 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,810 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,207 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,499 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,595 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,936 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,131 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,234 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,089 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,549 |
| Flags of North and South America | 0 | - | 4.99 | 373,977 |
| Former Flags | 0 | - | 4.97 | 107,918 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,017 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,649 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,593 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 31,041 |
| 20 Random Country Flags | 0 | - | 4.99 | 614,118 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,871 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,267 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,749 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,778 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,842 |
| Flag Maths | 0 | - | 4.64 | 57,785 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,123 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,823 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,049 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,841 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,537 |
| World Coats of Arms | 0 | - | 4.99 | 64,655 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,806 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,968 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,846 |
| Similar Flags #1 | 0 | - | 4.75 | 130,217 |
| Similar Flags #2 | 0 | - | 4.74 | 137,505 |
| Emoji Flags | 0 | - | 4.35 | 44,144 |
| Countries by Road Signs | 0 | - | 4.98 | 53,988 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,716 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,323 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,284 |
| Select the World Flags | 0 | - | 4.27 | 37,822 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,122 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,974 |
| Name a Valid Country Flag | 0 | - | 4.69 | 75,918 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,532 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,220 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,301 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,989 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,563 |
| Countries by Picture #1 | 0 | - | 4.51 | 117,993 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,859 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,966 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,327 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,341 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,997 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,889 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,197 |
| Pixelated World Map | 0 | - | 5.00 | 143,576 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,662 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,278 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 722,304 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,720 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,667 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,257 |
| Cities by Satellite #1 | 0 | - | 4.37 | 81,331 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,123 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,628 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,086 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,522 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,088 |
| Geography by Picture - B | 0 | - | 4.42 | 55,660 |
| Geography by Picture - H | 0 | - | 4.50 | 58,271 |
| Geography by Picture - N | 0 | - | 4.45 | 42,238 |
| Geography by Picture - R | 0 | - | 4.56 | 41,063 |
| Geography by Picture - T | 0 | - | 4.54 | 57,888 |
| Flags of Oceania | 0 | - | 5.00 | 260,233 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,607 |
| Flags of WW1 | 0 | - | 4.60 | 38,470 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,132 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,997 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,351 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,938 |
| Boundary Waters | 0 | - | 4.92 | 88,547 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,228 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,228 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,657 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,572 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,536 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,322 |
| All Germanic Languages With a Map | 0 | - | 4.89 | 68,780 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,557,969 |
| Landlocked Countries | 0 | - | 4.99 | 421,658 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 575,968 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,565 |
| Satellite Images #1 | 0 | - | 4.47 | 129,450 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,374 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,969 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,994 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,028 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,134 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,836 |
| World Capitals Quiz | 0 | - | 5.00 | 5,081,491 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,347 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,188 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,476 |
| Merged Countries #2 | 0 | - | 4.96 | 99,228 |
| Merged Countries #6 | 0 | - | 4.90 | 73,433 |
| Merged Countries #7 | 0 | - | 4.93 | 82,775 |
| Geography by Picture - A | 0 | - | 4.39 | 60,310 |
| Geography by Picture - D | 0 | - | 4.15 | 45,695 |
| Geography by Picture - F | 0 | - | 4.31 | 51,055 |
| Geography by Picture - G | 0 | - | 4.39 | 47,985 |
| Geography by Picture - J | 0 | - | 4.16 | 38,499 |
| Geography by Picture - K | 0 | - | 4.29 | 33,165 |
| Geography by Picture - C | 0 | - | 4.31 | 57,117 |
| Geography by Picture - L | 0 | - | 4.37 | 59,027 |
| Geography by Picture - M | 0 | - | 4.14 | 40,495 |
| Geography by Picture - P | 0 | - | 4.24 | 42,468 |
| Geography by Picture - S | 0 | - | 4.38 | 47,077 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,407 |
| Islands by Picture | 0 | - | 4.28 | 107,190 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,692 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,986 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,364 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,370 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,307 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 164,206 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,132 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,761 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,427 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,999 |
| Island Countries | 0 | - | 4.99 | 710,923 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,294 |
| Himalayan Countries | 0 | - | 4.95 | 138,585 |
| Andean Countries | 0 | - | 4.93 | 84,527 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,715 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,715 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,349 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,741 |
| Danube Countries | 0 | - | 4.97 | 71,968 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,967 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,384 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,234 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,716 |
| European Landlocked Countries | 0 | - | 4.99 | 147,094 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,576 |
| Countries with the Most Species | 0 | - | 4.99 | 103,203 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,708 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,570 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,706 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,519 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,200 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,623 |
| Countries in the Alps | 0 | - | 4.87 | 118,155 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,899 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,982 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,624 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,567 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,461 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,923 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,634 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,462 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,158 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,812 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,634 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,494 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,190 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,438 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,488 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,284 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,258 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,016 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,761 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,006 |
