| All Country Flags of the World | 0 | - | 5.00 | 3,645,354 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,533,991 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,287 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,362 |
| Flags with Crescents | 0 | - | 4.98 | 168,959 |
| Country Flag Trivia | 0 | - | 4.81 | 56,720 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,342 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,193 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 86,964 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,061 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,969 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,573 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,221 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,498 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,006 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,011 |
| Flags that are Red & White Only | 0 | - | 4.97 | 163,935 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,620 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,713 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,280 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,268 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,147 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,296 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,386 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,151 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,855 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,317 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,602 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,981 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,182 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,227 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,535 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,749 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,850 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,332 |
| Flags of North and South America | 0 | - | 4.99 | 371,664 |
| Flags to Languages | 0 | - | 4.95 | 173,324 |
| Former Flags | 0 | - | 4.97 | 107,424 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,847 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,369 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,267 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,630 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,837 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,879 |
| 20 Random Country Flags | 0 | - | 4.99 | 610,073 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,522 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,991 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,231 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,239 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,865 |
| Flag Maths | 0 | - | 4.64 | 57,740 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,204 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,323 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,704 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,645 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,432 |
| World Coats of Arms | 0 | - | 4.99 | 64,303 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,217 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,489 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,932 |
| Similar Flags #1 | 0 | - | 4.75 | 129,722 |
| Similar Flags #2 | 0 | - | 4.74 | 137,036 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,758 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,763 |
| Emoji Flags | 0 | - | 4.35 | 43,995 |
| Countries by Road Signs | 0 | - | 4.98 | 53,604 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,413 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 60,830 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,178 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 24,206 |
| Select the World Flags | 0 | - | 4.27 | 37,653 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,728 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,814 |
| Name a Valid Country Flag | 0 | - | 4.68 | 75,440 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,278 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,953 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,058 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,843 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,408 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,793 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,212 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,679 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,196 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,111 |
| Pixelated World Map | 0 | - | 5.00 | 143,099 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,184 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,847 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,917 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,503 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,256 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,132 |
| Cities by Satellite #1 | 0 | - | 4.37 | 80,827 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,019 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,209 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,837 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,294 |
| Countries by Picture #6 | 0 | - | 4.15 | 36,021 |
| Geography by Picture - B | 0 | - | 4.42 | 55,550 |
| Geography by Picture - H | 0 | - | 4.50 | 58,173 |
| Geography by Picture - N | 0 | - | 4.45 | 42,160 |
| Geography by Picture - R | 0 | - | 4.56 | 40,978 |
| Geography by Picture - T | 0 | - | 4.54 | 57,793 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,323 |
| Flags of Oceania | 0 | - | 5.00 | 257,979 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,856 |
| Flags of WW1 | 0 | - | 4.60 | 38,268 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,114 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,851 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,615 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,978 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,464 |
| Boundary Waters | 0 | - | 4.92 | 88,354 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,057 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,872 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,103 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,300 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,229 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,297,338 |
| Landlocked Countries | 0 | - | 4.99 | 418,343 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 566,685 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,372 |
| Satellite Images #1 | 0 | - | 4.46 | 129,272 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,226 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,847 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,841 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,924 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,807 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,802 |
| World Capitals Quiz | 0 | - | 5.00 | 5,060,712 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,753,544 |
| Merged Countries #2 | 0 | - | 4.96 | 98,863 |
| Merged Countries #6 | 0 | - | 4.90 | 73,097 |
| Merged Countries #7 | 0 | - | 4.93 | 82,415 |
| Geography by Picture - A | 0 | - | 4.39 | 60,189 |
| Geography by Picture - D | 0 | - | 4.15 | 45,603 |
| Geography by Picture - F | 0 | - | 4.31 | 50,939 |
| Geography by Picture - G | 0 | - | 4.38 | 47,905 |
| Geography by Picture - J | 0 | - | 4.16 | 38,424 |
| Geography by Picture - K | 0 | - | 4.29 | 33,091 |
| Geography by Picture - C | 0 | - | 4.31 | 57,026 |
| Geography by Picture - L | 0 | - | 4.37 | 58,896 |
| Geography by Picture - M | 0 | - | 4.14 | 40,414 |
| Geography by Picture - P | 0 | - | 4.24 | 42,392 |
| Geography by Picture - S | 0 | - | 4.38 | 47,004 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,314 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,299 |
| Islands by Picture | 0 | - | 4.29 | 106,663 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,477 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,575 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,586 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,816 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,489 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,655 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,581,847 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,452 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,819 |
| Island Countries | 0 | - | 4.99 | 709,531 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,686 |
| Himalayan Countries | 0 | - | 4.94 | 137,157 |
| Andean Countries | 0 | - | 4.95 | 83,788 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,040 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,430 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,718 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,264 |
| Danube Countries | 0 | - | 4.97 | 71,592 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,461 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,995 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,539 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,600 |
| European Landlocked Countries | 0 | - | 4.99 | 146,703 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,041 |
| Countries with the Most Species | 0 | - | 4.99 | 102,836 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,176 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,408 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,563 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,264 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,939 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,316 |
| Countries in the Alps | 0 | - | 4.87 | 117,600 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,076 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,268 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,373 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,922 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,028 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,403 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,209 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,138 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,934 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,502 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,447 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,305 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,882 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,153 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,169 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,062 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,020 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,541 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,438 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,090 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,092 |
