| All Country Flags of the World | 0 | - | 5.00 | 3,606,279 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,527,132 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,778 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,938 |
| Flags with Crescents | 0 | - | 4.98 | 167,686 |
| Country Flag Trivia | 0 | - | 4.81 | 55,992 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,506 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,528 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,005 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,512 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,431 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,093 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,953 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,410 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,039 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,451 |
| Flags that are Red & White Only | 0 | - | 4.97 | 162,083 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,777 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,447 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,697 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,726 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,460 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,794 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,870 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,642 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,360 |
| Country Flags with the Most Black | 0 | - | 4.95 | 96,867 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,304 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,712 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,804 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,529 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,819 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,933 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,120 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,070 |
| Flags of North and South America | 0 | - | 4.99 | 367,806 |
| Flags to Languages | 0 | - | 4.95 | 172,585 |
| Former Flags | 0 | - | 4.97 | 106,771 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,644 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,161 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,832 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,772 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,334 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,723 |
| 20 Random Country Flags | 0 | - | 4.99 | 604,941 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,109 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,665 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,599 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,539 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,522 |
| Flag Maths | 0 | - | 4.78 | 57,683 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,456 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,999 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,464 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,393 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,291 |
| World Coats of Arms | 0 | - | 4.99 | 63,916 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,455 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,869 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,012 |
| Similar Flags #1 | 0 | - | 4.74 | 129,171 |
| Similar Flags #2 | 0 | - | 4.74 | 136,428 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,492 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,214 |
| Emoji Flags | 0 | - | 4.35 | 43,828 |
| Countries by Road Signs | 0 | - | 4.98 | 53,146 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,073 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,007 |
| Select the World Flags | 0 | - | 4.27 | 37,422 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,342 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,597 |
| Name a Valid Country Flag | 0 | - | 4.67 | 74,886 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,072 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,706 |
| Countries by Satellite Image #4 | 0 | - | 4.61 | 66,848 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.56 | 46,700 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,235 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,410 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,001 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,415 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,969 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,098 |
| Pixelated World Map | 0 | - | 5.00 | 142,509 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,732 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,901 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,444 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,292 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,750 |
| European Cities by Picture #2 | 0 | - | 4.45 | 37,956 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,316 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,924 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,049 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,584 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,162 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,923 |
| Geography by Picture - B | 0 | - | 4.42 | 55,429 |
| Geography by Picture - H | 0 | - | 4.49 | 58,063 |
| Geography by Picture - N | 0 | - | 4.45 | 42,059 |
| Geography by Picture - R | 0 | - | 4.55 | 40,885 |
| Geography by Picture - T | 0 | - | 4.54 | 57,692 |
| Merged Company Logos #3 | 0 | - | 4.52 | 64,001 |
| Flags of Oceania | 0 | - | 5.00 | 255,513 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,976 |
| Flags of WW1 | 0 | - | 4.60 | 37,978 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 26,931 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,498 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,134 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,482 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,875 |
| Boundary Waters | 0 | - | 4.92 | 88,068 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,835 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,349 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,376 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,879 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,789 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,954,546 |
| Landlocked Countries | 0 | - | 4.99 | 414,003 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 554,149 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,118 |
| Satellite Images #1 | 0 | - | 4.46 | 129,043 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,011 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,669 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,671 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,819 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,411 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,743 |
| World Capitals Quiz | 0 | - | 5.00 | 5,034,316 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,720,462 |
| Merged Countries #2 | 0 | - | 4.96 | 98,512 |
| Merged Countries #6 | 0 | - | 4.91 | 72,751 |
| Merged Countries #7 | 0 | - | 4.92 | 82,000 |
| Geography by Picture - A | 0 | - | 4.39 | 60,064 |
| Geography by Picture - D | 0 | - | 4.15 | 45,509 |
| Geography by Picture - F | 0 | - | 4.31 | 50,840 |
| Geography by Picture - G | 0 | - | 4.38 | 47,801 |
| Geography by Picture - J | 0 | - | 4.16 | 38,344 |
| Geography by Picture - K | 0 | - | 4.28 | 33,027 |
| Geography by Picture - C | 0 | - | 4.31 | 56,922 |
| Geography by Picture - L | 0 | - | 4.37 | 58,776 |
| Geography by Picture - M | 0 | - | 4.14 | 40,353 |
| Geography by Picture - P | 0 | - | 4.24 | 42,312 |
| Geography by Picture - S | 0 | - | 4.38 | 46,924 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,064 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,193 |
| Islands by Picture | 0 | - | 4.29 | 105,972 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,196 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,051 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,716 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,115 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,566 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,044 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,572,055 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,268 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,081 |
| Island Countries | 0 | - | 4.99 | 707,775 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,759 |
| Himalayan Countries | 0 | - | 4.95 | 135,497 |
| Andean Countries | 0 | - | 4.94 | 82,895 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,279 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,293 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,971 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,656 |
| Danube Countries | 0 | - | 4.97 | 71,119 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,818 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,581 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,570 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,475 |
| European Landlocked Countries | 0 | - | 4.99 | 145,803 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,270 |
| Countries with the Most Species | 0 | - | 4.99 | 95,263 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,411 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,212 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,384 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,978 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,602 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,985 |
| Countries in the Alps | 0 | - | 4.86 | 116,899 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,611 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,338 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,042 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,461 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,224 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,043 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,622 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,790 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,454 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,104 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,206 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,066 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,482 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,791 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,783 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,157 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,685 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,280 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,830 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,523 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,812 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,624 |
| Largest Countries By Category | 0 | - | 4.97 | 156,835 |
