| Australian Capitals | 0 | - | 4.92 | 62,714 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,065 |
| Official European Union Languages | 0 | - | 4.97 | 238,332 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,738 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,856 |
| Australia True or False | 0 | - | 4.87 | 56,819 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,692 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,092 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,351 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,486 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,293 |
| Australia Country Quiz | 0 | - | 4.43 | 69,563 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,513 |
| Regions of New Zealand | 0 | - | 4.85 | 28,478 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,197 |
| Slavic Languages | 0 | - | 4.68 | 54,317 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,547 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,039 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 219,589 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,972 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,752 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,872 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,804 |
| Top World Languages | 0 | - | 4.92 | 821,107 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,139 |
| Non-Stop Flights to New Zealand | 0 | - | 4.46 | 47,990 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,178 |
| Countries by Official Language | 0 | - | 4.95 | 194,783 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,753 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,725 |
| Countries in their Native Language | 0 | - | 4.99 | 198,326 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,656 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,399 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,144 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,499 |
| Word Chain - Australia | 0 | - | 4.38 | 38,130 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,877 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,878 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,645 |
| Asia Map Quiz | 0 | - | 4.99 | 915,727 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,034 |
| Countries of Africa | 0 | - | 5.00 | 2,533,615 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,737 |
| African East Coast | 0 | - | 4.96 | 95,952 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,771 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,048 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,592 |
| Australia Map Quiz | 0 | - | 4.95 | 344,168 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,877 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,004 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,623 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,790 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,228 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,935 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,059 |
| The Only European Country ... | 0 | - | 4.91 | 216,323 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,961 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,798 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,837 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,036 |
| Spanish to English Country Names | 0 | - | 4.86 | 32,975 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,357 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,618 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,329 |
| German-Speaking Countries | 0 | - | 4.91 | 145,443 |
| Italian Name Translation | 0 | - | 4.82 | 46,494 |
| French-Speaking Countries | 0 | - | 4.85 | 270,338 |
| Officially Recognized Languages of India | 0 | - | 4.39 | 31,299 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,936 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,353 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,830 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,505 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,139 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,191 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,353 |
| African Island Countries | 0 | - | 4.96 | 101,528 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,262 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,199 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,677 |
| Australian States and Territories | 0 | - | 4.96 | 141,822 |
| Famous Australians by Description | 0 | - | 4.23 | 27,907 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,267 |
| Australian Slang | 0 | - | 4.24 | 28,614 |
| Flags of North and South America | 0 | - | 4.99 | 372,539 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,569 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,159 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,571 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,700 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,933 |
| North America Map Quiz | 0 | - | 4.98 | 248,163 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,970 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,733 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,838 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,242,135 |
| Celtic Nations | 0 | - | 4.69 | 46,923 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,308 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,560 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,097 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,442 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,064 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,317 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,242 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,135 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,978 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,158 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,935 |
| Slavic Countries | 0 | - | 4.96 | 111,575 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,325 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,935 |
| Languages of Spain | 0 | - | 4.36 | 23,302 |
| Counties of England | 0 | - | 4.97 | 795,830 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,299 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,633 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,155 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,639 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,069 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,908 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,764 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,402 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,179 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 49,832 |
| Countries of the Middle East | 0 | - | 4.96 | 200,953 |
| English Speaking Countries | 0 | - | 4.64 | 357,202 |
| Category Elimination - Official Languages | 0 | - | 4.98 | 69,736 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,615 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,474 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,082 |
| States of India | 0 | - | 4.95 | 192,977 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,581 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,313 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,728 |
| The Only African Country ... | 0 | - | 4.99 | 129,033 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,099 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,771 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 321,944 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,106 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.87 | 56,027 |
| Flags of Oceania | 0 | - | 5.00 | 258,641 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 145,319 |
| The Only American Country ... | 0 | - | 4.92 | 121,500 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,032 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,544 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,854 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,844 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,602 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,983 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,421 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,310 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,406 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,877 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,873 |
| US States Quiz | 0 | - | 5.00 | 16,853,834 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,015 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,753 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,390 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,127 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,016 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,453 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,644 |
| Monarchies of Europe | 0 | - | 4.90 | 98,046 |
| European Countries with One Border | 0 | - | 4.97 | 182,652 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,459 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,113 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,068 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,353 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,500 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,860 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,755 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,858 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,825 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,816 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,279 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,689 |
| States of Germany | 0 | - | 4.96 | 152,257 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,967 |
| Regions of Italy | 0 | - | 4.92 | 75,750 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,042 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,804 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,119 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,261 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,933 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,360 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,684 |
| Champions League Winners | 0 | - | 4.92 | 1,005,561 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,438 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,888 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,176 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,612 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,101 |
| Monarchies of Asia | 0 | - | 4.97 | 71,038 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,825 |
| Provinces of Turkey | 0 | - | 4.95 | 203,869 |
| World Currencies Quiz on a Map | 0 | - | 4.95 | 60,910 |
| Provinces of China | 0 | - | 4.97 | 203,983 |
| Japanese Prefectures | 0 | - | 4.98 | 136,640 |
| Places in their Native Language #2 | 0 | - | 4.79 | 134,138 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.75 | 127,699 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,871 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,782 |
