| All Country Flags of the World | 0 | - | 5.00 | 2,959,942 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,363,001 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,000,950 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 670,759 |
| Flags with Crescents | 0 | - | 4.98 | 143,163 |
| Country Flag Trivia | 0 | - | 4.87 | 43,777 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.99 | 75,873 |
| Country Flags with the Union Jack | 0 | - | 4.84 | 56,054 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.84 | 41,781 |
| Countries by Partial Flag Images #1 | 0 | - | 4.97 | 112,896 |
| Countries by Partial Flag Images #3 | 0 | - | 4.99 | 88,702 |
| Flags with the Most Stars | 0 | - | 4.91 | 105,672 |
| Flags that are Red & White Only | 0 | - | 4.97 | 130,794 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 125,404 |
| Flags of the Countries with Four Letters | 0 | - | 4.93 | 35,126 |
| Four Countries with Similar Flags #2 | 0 | - | 4.89 | 35,348 |
| Four Countries with Similar Flags #1 | 0 | - | 4.98 | 43,190 |
| Country Flags with the Most Red | 0 | - | 4.97 | 91,285 |
| Country Flags with the Most Blue | 0 | - | 4.91 | 79,353 |
| Country Flags with the Most Green | 0 | - | 4.96 | 79,819 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 81,252 |
| Country Flags with the Most Yellow | 0 | - | 4.93 | 77,859 |
| Country Flags with the Most Black | 0 | - | 4.94 | 86,116 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.94 | 55,320 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.93 | 43,829 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 81,707 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 62,677 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 48,308 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 81,999 |
| Flags to Languages | 0 | - | 4.95 | 158,328 |
| Former Flags | 0 | - | 4.98 | 81,371 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 33,512 |
| Countries by Partial Flag Images #6 | 0 | - | 4.93 | 27,078 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 309,428 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 26,640 |
| Random Flag to Country | 0 | - | 4.99 | 504,792 |
| Countries by Bordering Flags #1 | 0 | - | 4.92 | 93,929 |
| Countries by Bordering Flags #2 | 0 | - | 4.87 | 75,297 |
| Flags of the Mediterranean | 0 | - | 4.93 | 123,918 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 114,404 |
| Random Flags Quiz | 0 | - | 4.41 | 255,631 |
| Flags of Countries in the World Cup 2018 | 0 | - | 4.84 | 86,220 |
| Countries by Satellite Image #1 | 0 | - | 4.87 | 129,329 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 75,714 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.87 | 44,373 |
| Countries by Coat of Arms #1 | 0 | - | 4.95 | 58,198 |
| World Coats of Arms | 0 | - | 4.99 | 55,369 |
| Category Elimination - Country Flags #1 | 0 | - | 4.97 | 125,404 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 40,520 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 150,545 |
| Country Flags with the Southern Cross | 0 | - | 4.72 | 51,531 |
| Similar Flags #1 | 0 | - | 4.72 | 110,671 |
| Similar Flags #2 | 0 | - | 4.79 | 112,644 |
| Emoji Flags | 0 | - | 4.34 | 40,562 |
| Countries by Road Signs | 0 | - | 4.98 | 45,191 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 53,718 |
| Islands by Shape #2 | 0 | - | 4.87 | 44,954 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.76 | 23,467 |
| Random Circular Cutouts of the World Map | 0 | - | 4.97 | 66,349 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.64 | 54,073 |
| Name a Valid Country Flag | 0 | - | 4.55 | 47,306 |
| Countries by Satellite Image #3 | 0 | - | 4.65 | 66,075 |
| Countries by Satellite Image #2 | 0 | - | 4.79 | 64,106 |
| Countries by Satellite Image #4 | 0 | - | 4.66 | 62,159 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 43,789 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 41,200 |
| Countries by Coat of Arms #2 | 0 | - | 4.78 | 32,219 |
| Countries by Picture #1 | 0 | - | 4.51 | 89,475 |
| Countries by Picture #3 | 0 | - | 4.52 | 54,475 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 42,090 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,043,068 |
| Flags of Asia Quiz | 0 | - | 4.99 | 523,739 |
| Pixelated World Map | 0 | - | 5.00 | 128,076 |
| Flags of Africa Quiz | 0 | - | 4.99 | 385,808 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 66,514 |
| Satellite Images - Europe | 0 | - | 4.44 | 81,309 |
| European Cities by Picture #2 | 0 | - | 4.47 | 34,530 |
| Cities by Satellite #1 | 0 | - | 4.36 | 70,322 |
| Cities by Satellite #2 | 0 | - | 4.47 | 22,735 |
| Countries by Picture #4 | 0 | - | 4.17 | 41,832 |
| Countries by Picture #2 | 0 | - | 4.37 | 64,160 |
| Countries by Picture #5 | 0 | - | 4.27 | 39,777 |
| Countries by Picture #6 | 0 | - | 4.17 | 33,612 |
| Geography by Picture - H | 0 | - | 4.52 | 55,098 |
| Geography by Picture - N | 0 | - | 4.46 | 39,503 |
| Geography by Picture - R | 0 | - | 4.55 | 38,541 |
| Geography by Picture - T | 0 | - | 4.63 | 54,663 |
| Flags of Oceania | 0 | - | 5.00 | 214,903 |
| Three Band Flags of Europe | 0 | - | 4.97 | 160,802 |
| Pixelated Africa Map | 0 | - | 4.98 | 88,206 |
| Pixelated Asia Map | 0 | - | 4.89 | 63,117 |
| Pixelated Europe Map | 0 | - | 4.90 | 109,335 |
| Boundary Waters | 0 | - | 4.93 | 81,058 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,648 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 44,581 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 51,118 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,865,008 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 323,039 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 350,046 |
| Satellite Images Quiz #1 | 0 | - | 4.46 | 122,585 |
| Satellite Images Quiz #2 | 0 | - | 4.65 | 103,528 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 84,292 |
| Satellite Images Quiz #5 | 0 | - | 4.46 | 45,664 |
| Satellite Images Quiz #6 | 0 | - | 4.52 | 35,543 |
| Cities by Picture #1 | 0 | - | 4.66 | 76,949 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.54 | 23,458 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,072 |
| World Capitals Quiz | 0 | - | 5.00 | 4,492,532 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,064,486 |
| Merged Countries #2 | 0 | - | 4.96 | 89,541 |
| Merged Countries #4 | 0 | - | 4.87 | 84,202 |
| Merged Countries #6 | 0 | - | 4.89 | 65,091 |
| Merged Countries #7 | 0 | - | 4.93 | 74,236 |
| Geography by Picture - A | 0 | - | 4.35 | 56,777 |
| Geography by Picture - B | 0 | - | 4.36 | 52,325 |
| Geography by Picture - D | 0 | - | 4.10 | 43,115 |
| Geography by Picture - F | 0 | - | 4.25 | 48,217 |
| Geography by Picture - G | 0 | - | 4.39 | 45,274 |
| Geography by Picture - J | 0 | - | 4.14 | 36,305 |
| Geography by Picture - C | 0 | - | 4.28 | 54,136 |
| Geography by Picture - L | 0 | - | 4.34 | 55,722 |
| Geography by Picture - M | 0 | - | 4.11 | 38,316 |
| Geography by Picture - P | 0 | - | 4.28 | 40,069 |
| Geography by Picture - S | 0 | - | 4.35 | 44,475 |
| Islands by Shape #1 | 0 | - | 4.27 | 71,526 |
| Islands by Picture | 0 | - | 4.30 | 91,628 |
| World Geography on a Map #1 | 0 | - | 4.93 | 67,266 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 83,664 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,082 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,673 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.95 | 109,623 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,380,891 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,740 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 354,974 |
| Members of the Arab League | 0 | - | 4.85 | 61,618 |
| Island Countries Quiz | 0 | - | 4.99 | 659,873 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,696 |
| Himalayan Countries | 0 | - | 4.94 | 104,562 |
| Andean Countries | 0 | - | 4.91 | 57,956 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,901 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,234 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,573 |
| Coffee Producing Countries | 0 | - | 4.81 | 53,991 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,236 |
| Danube Countries | 0 | - | 4.97 | 56,597 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,630 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,799 |
| Countries with the Best Passports | 0 | - | 4.87 | 71,078 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,274 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,358 |
| European Landlocked Countries | 0 | - | 4.99 | 115,069 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,256 |
| Countries with the Most Species | 0 | - | 4.99 | 89,499 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,281 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,647 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,977 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,195 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,375 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,652 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,076 |
| Countries in the Alps | 0 | - | 4.84 | 102,531 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,211 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,885 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,506 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,162 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,872 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,470 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,536 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,092 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,278 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,579 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,356 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,534 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,626 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,397 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,886 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,390 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,800 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,279 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,322 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,709 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,655 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,231 |
| Largest Countries By Category | 0 | - | 4.96 | 144,751 |
| Countries by Countries | 0 | - | 4.96 | 54,566 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,229 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,643 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 44,655 |
| All Countries by Population With a Map | 0 | - | 4.99 | 61,839 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 76,647 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,072 |
| Biggest Countries by Area | 0 | - | 5.00 | 931,969 |
| Northernmost Countries | 0 | - | 4.99 | 326,858 |
| Countries of South America | 0 | - | 5.00 | 791,934 |
| Countries of Oceania | 0 | - | 5.00 | 892,051 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,145,920 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,569,590 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 134,474 |
| Western Europe Map Quiz | 0 | - | 4.87 | 89,071 |
| Satellite Images - Island Chains | 0 | - | 4.42 | 57,337 |
