| Island Countries | 0 | - | 4.99 | 710,122 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,317 |
| European Countries by Clue | 0 | - | 4.92 | 183,576 |
| Countries by Military Spending | 0 | - | 4.93 | 177,618 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,199 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,402,013 |
| US States Quiz | 0 | - | 5.00 | 16,857,822 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,467 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,490 |
| World Capitals Quiz | 0 | - | 5.00 | 5,069,092 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,833 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,826,055 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,788 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,536,155 |
| Random Capital to Country | 0 | - | 4.99 | 2,589,897 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,489 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,656 |
| All Country Flags of the World | 0 | - | 5.00 | 3,657,871 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,231 |
| Countries that Start with B | 0 | - | 4.95 | 2,292,827 |
| Countries that Start with A | 0 | - | 4.98 | 2,161,054 |
| Countries of Africa | 0 | - | 5.00 | 2,534,159 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,713 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,688,381 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,851 |
| Countries that Start with C | 0 | - | 4.96 | 1,820,807 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,131 |
| Countries that Start with S | 0 | - | 4.98 | 1,753,701 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,614 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,584,855 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,500 |
| Countries that Start with G | 0 | - | 4.97 | 1,502,184 |
| Countries that Start with M | 0 | - | 4.97 | 1,380,733 |
| Countries that Start with E | 0 | - | 4.95 | 1,376,184 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,486 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,898 |
| Countries that Start with I | 0 | - | 4.92 | 1,287,249 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,349 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,030 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,372 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,917 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,242,489 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,937 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,824 |
| Random Country to Capital | 0 | - | 4.98 | 919,668 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,194 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,294 |
| Asia Map Quiz | 0 | - | 4.99 | 915,896 |
| Countries that Start with U | 0 | - | 4.97 | 904,003 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,821 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,164 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,099 |
| Counties of England | 0 | - | 4.97 | 795,941 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,844 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,610 |
| Top World Languages | 0 | - | 4.92 | 821,303 |
| Countries of South America | 0 | - | 5.00 | 924,122 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,927 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,116 |
| Countries that Start with K | 0 | - | 4.97 | 815,120 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,302 |
| US States with an Empty Map | 0 | - | 5.00 | 624,032 |
| Countries that Start with V | 0 | - | 4.98 | 608,959 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,135 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,623 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,801 |
| Countries that Start with D | 0 | - | 4.96 | 708,745 |
| Countries That Border Russia | 0 | - | 4.98 | 461,506 |
| One Border Countries | 0 | - | 4.98 | 468,198 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,559 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,010 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,826 |
| Countries with Four Letters | 0 | - | 4.99 | 422,064 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,217 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,243 |
| Countries Bordering France | 0 | - | 4.83 | 402,342 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,067 |
| Northernmost Countries | 0 | - | 4.99 | 360,897 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,260 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,844 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,227 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,856 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,400 |
| Landlocked Countries | 0 | - | 4.99 | 419,776 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,926 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,228 |
| Australia Map Quiz | 0 | - | 4.95 | 344,223 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,908 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,065 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,823 |
| Countries that Start with H | 0 | - | 4.96 | 604,066 |
| Countries that Start with J | 0 | - | 4.98 | 601,790 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,046 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,209 |
| "Land" Countries | 0 | - | 4.98 | 336,011 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,458 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,415 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,099 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,789 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,507 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,485 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,265 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,314 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,060 |
| Countries with Z | 0 | - | 4.98 | 290,487 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,764 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,619 |
| Flags of North and South America | 0 | - | 4.99 | 372,652 |
| EU Countries Quiz | 0 | - | 4.99 | 273,487 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,262 |
| Countries that Border China | 0 | - | 4.96 | 263,031 |
| French-Speaking Countries | 0 | - | 4.85 | 270,368 |
| Countries with Five Letters | 0 | - | 4.96 | 281,021 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,097 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,935 |
| Every Country Shape | 0 | - | 5.00 | 464,714 |
| Europe Capital to Country | 0 | - | 4.99 | 249,880 |
| Longest International Borders | 0 | - | 4.99 | 264,829 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,570 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,257 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,739 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,288 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,832 |
| Megacities on a World Map | 0 | - | 4.98 | 254,209 |
| World Currency Quiz | 0 | - | 4.92 | 302,611 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,667 |
| NATO Countries | 0 | - | 4.98 | 279,826 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,818 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,060 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,404 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,784 |
| Official Cities in the UK | 0 | - | 4.89 | 283,434 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,867 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,888 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,851 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,887 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,881 |
| Countries with Megacities | 0 | - | 4.99 | 262,531 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,196 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,726 |
| World Capitals by Map | 0 | - | 5.00 | 286,071 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,619 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,732 |
| World's Busiest Airports | 0 | - | 4.96 | 233,153 |
| Country Chain | 0 | - | 4.96 | 216,991 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,167 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,621 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,860 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,329 |
| Independence from Whom | 0 | - | 4.99 | 211,546 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,950 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,555 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,396 |
| Countries with Six Letters | 0 | - | 4.94 | 212,708 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,671 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,151 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,363 |
| Flags of Oceania | 0 | - | 5.00 | 258,723 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,155 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,289 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,580 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,237 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,458 |
| Countries in their Native Language | 0 | - | 4.99 | 198,354 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,927 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,049 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,025 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,432 |
| Monarchies of the World | 0 | - | 4.94 | 168,487 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,888 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,990 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,493 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,056 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,942 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,653 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,764 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,463 |
| Countries That End in Y | 0 | - | 4.91 | 185,687 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,254 |
| Olympic Host Countries | 0 | - | 4.98 | 200,592 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,607 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,472 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,884 |
| Every European Country Shape | 0 | - | 4.96 | 201,496 |
| Countries of the Middle East | 0 | - | 4.96 | 201,015 |
| Countries by Official Language | 0 | - | 4.95 | 194,809 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,887 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,309 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,328 |
| Counties of Ireland | 0 | - | 4.92 | 195,042 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,817 |
| Countries Bordering India | 0 | - | 4.98 | 163,394 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,544 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,831 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,818 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,502 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,794 |
| European Cities by Clue | 0 | - | 4.70 | 89,041 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,160 |
| Islands by Country #2 | 0 | - | 4.80 | 77,384 |
