| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 56,430 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.86 | 48,823 |
| African Great Lakes | 0 | - | 4.84 | 53,326 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,185 |
| South China Sea Countries | 0 | - | 4.82 | 53,856 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 128,276 |
| Top 10 American Countries by Coastline | 0 | - | 4.95 | 83,394 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.91 | 89,411 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,968 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,243 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.89 | 78,670 |
| Capitals by River | 0 | - | 4.64 | 47,119 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 56,732 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,039 |
| Countries with the Most Sheep | 0 | - | 4.89 | 82,450 |
| Rivers of the United States | 0 | - | 4.91 | 57,030 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,295 |
| Countries that Catch the Most Fish | 0 | - | 4.89 | 101,341 |
| Countries with the Most Wolves | 0 | - | 4.88 | 78,733 |
| Countries With The Most Bird Species | 0 | - | 4.86 | 19,525 |
| Countries With Two or More Bear Species | 0 | - | 4.89 | 18,734 |
| Countries with the Most Wild Elephants | 0 | - | 4.57 | 50,845 |
| Animal Populations of Countries | 0 | - | 4.50 | 40,155 |
| Top 15 Countries with the Most Cows | 0 | - | 4.65 | 89,344 |
| Countries with NO Snakes | 0 | - | 4.52 | 62,253 |
| Country Name Etymologies #1 | 0 | - | 4.97 | 133,479 |
| Countries with More Cows than People | 0 | - | 4.41 | 47,663 |
| Countries Closest to the Aegean Sea | 0 | - | 4.63 | 56,030 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.19 | 63,187 |
| Asian Physical Geography | 0 | - | 4.59 | 33,635 |
| Top 10 African Countries by Coastline | 0 | - | 4.26 | 46,380 |
| Countries with Wild Lions | 0 | - | 4.75 | 21,185 |
| Landforms by Country Quiz | 0 | - | 4.54 | 51,259 |
| Top 10 Countries with the Most Horses | 0 | - | 4.51 | 64,439 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.76 | 33,802 |
| Longest Rivers in the UK | 0 | - | 4.38 | 13,086 |
| Where Do Musk Oxen Live? | 0 | - | 4.64 | 14,579 |
| Five Countries by a Single Word by Continent | 0 | - | 4.89 | 65,849 |
| Top Countries for Shark Attacks | 0 | - | 4.49 | 43,742 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.29 | 18,242 |
| Geological Extremes Quiz | 0 | - | 4.32 | 38,689 |
| African Physical Geography | 0 | - | 4.49 | 29,987 |
| European Physical Geography | 0 | - | 4.20 | 31,936 |
| National Animals | 0 | - | 4.28 | 83,544 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,984,129 |
| Bay of Bengal Countries With an Empty Map | 0 | - | 4.66 | 70,958 |
| Oceania Physical Geography | 0 | - | 4.27 | 11,932 |
| South American Physical Geography | 0 | - | 4.56 | 17,291 |
| Seas of Europe | 0 | - | 4.32 | 79,319 |
| Animals by Close-up Image | 0 | - | 4.41 | 203,771 |
| Mammals by Picture #3 | 0 | - | 4.41 | 55,511 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 39,591 |
| Mammals by Picture #1 | 0 | - | 4.76 | 82,310 |
| Boundary Waters | 0 | - | 4.93 | 81,167 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,894 |
| World Capitals Quiz | 0 | - | 5.00 | 4,502,153 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 324,432 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,077,132 |
| Airports Named for People #1 | 0 | - | 4.45 | 53,265 |
| Animals of Australia | 0 | - | 4.51 | 39,865 |
| Birds by Picture #1 | 0 | - | 4.45 | 34,439 |
| North American Bird-Named Teams | 0 | - | 4.41 | 65,137 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 30,158 |
| World Geography on a Map #1 | 0 | - | 4.93 | 67,389 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,344 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,923 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,384,385 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,323 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 355,837 |
| Members of the Arab League | 0 | - | 4.85 | 62,255 |
| Island Countries Quiz | 0 | - | 4.99 | 660,966 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,158 |
| Himalayan Countries | 0 | - | 4.94 | 104,993 |
| Andean Countries | 0 | - | 4.91 | 58,250 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,208 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,428 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,784 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,082 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,338 |
| Danube Countries | 0 | - | 4.97 | 56,663 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,706 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,860 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,275 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,394 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,588 |
| European Landlocked Countries | 0 | - | 4.99 | 115,532 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,414 |
| Countries with the Most Species | 0 | - | 4.99 | 89,537 |
| Countries 197 to 205 | 0 | - | 4.89 | 56,390 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,688 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,019 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,311 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,433 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,713 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,175 |
| Countries in the Alps | 0 | - | 4.84 | 102,703 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,351 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,241 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,611 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,297 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,004 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,589 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,659 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,170 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,335 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,681 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,457 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,609 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,684 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,528 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,000 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,503 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,150 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,366 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,416 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,503 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,989 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,302 |
| Largest Countries By Category | 0 | - | 4.96 | 144,966 |
| Countries by Countries | 0 | - | 4.96 | 54,673 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,265 |
| Biggest Countries by Area | 0 | - | 5.00 | 933,908 |
| Northernmost Countries | 0 | - | 4.99 | 327,382 |
| Countries of South America | 0 | - | 5.00 | 794,312 |
| Countries of Oceania | 0 | - | 5.00 | 894,746 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,157,017 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,575,059 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,398,762 |
| Europe Map Quiz | 0 | - | 5.00 | 4,298,025 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.99 | 134,678 |
| Western Europe Map Quiz | 0 | - | 4.87 | 89,139 |
| Top World Languages | 0 | - | 4.91 | 708,677 |
| Who Controls It? #1 | 0 | - | 4.84 | 45,518 |
| Rivers A-Z | 0 | - | 4.34 | 31,395 |
| Answers Contain Sea | 0 | - | 3.85 | 26,973 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 181,337 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 110,950 |
| Longest International Borders | 0 | - | 4.99 | 234,264 |
| Country Connect by Northernmost Point | 0 | - | 4.97 | 35,989 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 40,136 |
| Demonym of Every Country | 0 | - | 4.91 | 49,609 |
| "Big Five" African Game Animals | 0 | - | 4.20 | 45,582 |
| Fish by Picture #1 | 0 | - | 4.39 | 102,226 |
| Animals A-Z by Picture | 0 | - | 4.14 | 59,404 |
| Extinct Animals by Picture | 0 | - | 4.47 | 30,797 |
| Mammals by Picture #2 | 0 | - | 4.30 | 52,744 |
| Analogies of Countries #1 | 0 | - | 4.84 | 50,309 |
| Five Letter Geography #4 | 0 | - | 4.84 | 66,445 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 152,870 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,453 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,844 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,057 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,104 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,194 |
| Countries with Megacities | 0 | - | 4.99 | 197,549 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,219 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,150 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,804 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 90,702 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,102 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,604 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 69,978 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,048 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,243 |
| Biggest Cities in the World | 0 | - | 4.89 | 688,084 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,510 |
| Biggest City in Every Country | 0 | - | 4.97 | 79,000 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 170,122 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,237 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,475 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 65,055 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,613 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,715 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,366 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,429 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,421 |
| Biggest Cities in the United States | 0 | - | 4.93 | 822,955 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 334,365 |
| Summer Olympic City Bids | 0 | - | 4.93 | 37,152 |
| Global Cities on a World Map | 0 | - | 4.92 | 91,509 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.86 | 91,371 |
| Africa Capitals Quiz | 0 | - | 4.99 | 635,163 |
| Asia Capitals Quiz | 0 | - | 4.98 | 594,775 |
| Capitals in their Native Languages | 0 | - | 4.95 | 127,572 |
| Northernmost Capital Cities | 0 | - | 4.98 | 94,083 |
| Most Remote Capital Cities | 0 | - | 4.90 | 43,770 |
| Nearest Capital City #1 | 0 | - | 4.82 | 52,482 |
| Capital Cities: Ports and Saints | 0 | - | 4.94 | 34,413 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 90,891 |
| Same Letter Country and Capital | 0 | - | 4.99 | 127,628 |
| Countries by Capital City | 0 | - | 4.99 | 49,508 |
| Capital Cities Based on First Two Letters | 0 | - | 4.84 | 65,972 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 105,126 |
| World Capitals by Proximity | 0 | - | 4.88 | 299,547 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 73,024 |
| World Capitals Deepest in a Country's Territory | 0 | - | 4.96 | 48,867 |
| Moved Capital Cities | 0 | - | 4.94 | 52,315 |
| World Capitals by Map | 0 | - | 5.00 | 242,016 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 50,337 |
| Random Capital to Country | 0 | - | 4.99 | 2,362,873 |
