| Countries of the Soviet Union | 0 | - | 4.98 | 193,783 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,212 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,401 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,074 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,991 |
| Random European Capital to Country | 0 | - | 4.98 | 189,142 |
| Random European Country to Capital | 0 | - | 4.92 | 147,394 |
| Name a City - European Countries | 0 | - | 4.92 | 64,338 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,913 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,505 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,312 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,748 |
| Former Capitals | 0 | - | 4.88 | 71,127 |
| Europe Capital to Country | 0 | - | 4.99 | 247,440 |
| Asia Capital to Country | 0 | - | 4.96 | 125,699 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,392 |
| European Capitals by Map | 0 | - | 4.99 | 136,133 |
| African Capitals by Map | 0 | - | 4.99 | 132,108 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,066 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,064 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,140 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,574 |
| European Coastal Capitals | 0 | - | 4.95 | 89,710 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,169 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,628 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,676 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,405 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,426 |
| Official Cities in the UK | 0 | - | 4.89 | 280,403 |
| Cities in European History #1 | 0 | - | 4.63 | 133,063 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,747 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,622 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,373 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,137 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,679 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,412 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,740 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,154 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.97 | 144,827 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,272 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,693 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 25,761 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,277 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,365 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,777 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,645 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,843 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,657 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,295 |
| Capitals of the Stans | 0 | - | 4.95 | 26,391 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,084 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,853 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,031 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 122,929 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,276 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,398 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,789 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,174 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,244 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,602 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,789 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,340 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,367 |
| Random African Capital to Country | 0 | - | 4.97 | 99,708 |
| Random African Country to Capital | 0 | - | 4.94 | 70,196 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,500 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,869 |
| Melbourne Suburbs | 0 | - | 4.84 | 51,712 |
| Which City in Europe? | 0 | - | 4.83 | 106,594 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,158 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,112 |
| European Capitals by Airport Code | 0 | - | 4.92 | 35,398 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,689 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,275 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,884 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,613 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,565 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,554 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,344 |
| Countries by Capital City | 0 | - | 5.00 | 66,563 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,284 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,870 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,227 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,389 |
| Moved Capital Cities | 0 | - | 4.96 | 73,554 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,299 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,158 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 93,315 |
| Which City in Canada? | 0 | - | 4.82 | 56,640 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,473 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,077 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,584 |
| North American Sports Cities | 0 | - | 4.83 | 170,845 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,904 |
| European Cities by Map #2 | 0 | - | 4.48 | 47,186 |
| European Cities by Map #1 | 0 | - | 4.64 | 55,555 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,799 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,009 |
| Cities in U.S. History #1 | 0 | - | 4.25 | 42,247 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,691 |
| Cities in Squares on a Map - Europe | 0 | - | 4.73 | 53,160 |
| Name a Valid World City | 0 | - | 4.83 | 70,080 |
| Cities by Former Name | 0 | - | 4.84 | 90,934 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,672 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,222 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,871 |
| World Capitals by Map | 0 | - | 5.00 | 283,070 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,636 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,405 |
| Random Country to Capital | 0 | - | 4.98 | 911,248 |
| Capitals Starting With H | 0 | - | 4.90 | 90,606 |
| Capitals Starting With K | 0 | - | 4.85 | 75,646 |
| Capitals Starting With L | 0 | - | 4.81 | 86,789 |
| Capitals Starting With M | 0 | - | 4.93 | 105,990 |
| Capitals Starting With P | 0 | - | 4.88 | 77,149 |
| Capitals Starting With R | 0 | - | 4.87 | 80,936 |
| Capitals Starting With S | 0 | - | 4.89 | 84,770 |
| Capitals Starting With T | 0 | - | 4.84 | 75,259 |
| Capitals Starting With W | 0 | - | 4.89 | 90,578 |
| Capitals Starting With A | 0 | - | 4.97 | 126,487 |
| Capitals Starting With B | 0 | - | 4.89 | 117,233 |
| Capitals Starting With D | 0 | - | 4.93 | 95,337 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,148 |
| US States and State Capitals | 0 | - | 4.99 | 158,355 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,286 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,007 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,929 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,142 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,843 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,922 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,786 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,951 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,803 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,960 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,354 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,263 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,870 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,237 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,219 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,562 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,529 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,765 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,160 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,554 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 94,701 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,455 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,295 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,318 |
| South American Cities on the Map | 0 | - | 4.57 | 35,239 |
| North America Cities by Map | 0 | - | 4.41 | 47,604 |
| 1M Cities by Proximity - United States | 0 | - | 4.55 | 149,663 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,156 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,035 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.73 | 40,580 |
| Random European City to Country | 0 | - | 4.69 | 116,284 |
| Random Asian City to Country | 0 | - | 4.56 | 44,386 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,630 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,170 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,077 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 47,608 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 48,221 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,304 |
| Cities on Route 66 on a Map | 0 | - | 4.53 | 32,789 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,456 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,101 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,082 |
| World Capitals Closest to Jerusalem | 0 | - | 4.47 | 44,813 |
| Capital Cities Chain | 0 | - | 4.84 | 81,881 |
| Coldest World Capitals | 0 | - | 4.95 | 133,024 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,279 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.89 | 125,346 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,143 |
| Word Scramble - European Capitals | 0 | - | 4.72 | 93,748 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,684 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,752 |
| Flags to Capitals #1 | 0 | - | 4.96 | 57,851 |
| Flags to Capitals #2 | 0 | - | 4.95 | 43,897 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.86 | 93,443 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,236 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 61,219 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,954 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 64,817 |
| The Only Country ... | 0 | - | 4.91 | 79,815 |
| Biggest British Empire Countries | 0 | - | 4.73 | 87,268 |
| Vietnam War Countries | 0 | - | 4.83 | 93,580 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,278 |
| Countries of the German Empire | 0 | - | 4.51 | 37,649 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,592 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,486 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,210 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,391 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,737 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.98 | 99,736 |
| British Places A-Z | 0 | - | 4.29 | 79,589 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 64,809 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,578 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,646 |
| Random U.S. City to State | 0 | - | 4.45 | 75,281 |
| Name a Valid U.S. City over 100,000 | 0 | - | 4.42 | 39,999 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,170 |
