| Island Countries | 0 | - | 4.99 | 708,126 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,524 |
| European Countries by Clue | 0 | - | 4.92 | 182,512 |
| Countries by Military Spending | 0 | - | 4.93 | 176,633 |
| Countries by Three Words #2 | 0 | - | 4.97 | 199,063 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,022,866 |
| US States Quiz | 0 | - | 5.00 | 16,734,967 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,594,714 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,805 |
| World Capitals Quiz | 0 | - | 5.00 | 5,040,208 |
| Europe Map Quiz | 0 | - | 5.00 | 4,737,631 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,806,204 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,835 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,528,489 |
| Random Capital to Country | 0 | - | 4.99 | 2,580,570 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,727,287 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,805 |
| All Country Flags of the World | 0 | - | 5.00 | 3,614,074 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,090,955 |
| Countries that Start with B | 0 | - | 4.95 | 2,282,598 |
| Countries that Start with A | 0 | - | 4.98 | 2,149,954 |
| Countries of Africa | 0 | - | 5.00 | 2,513,410 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,321 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,679,919 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,514 |
| Countries that Start with C | 0 | - | 4.96 | 1,812,526 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,377,441 |
| Countries that Start with S | 0 | - | 4.98 | 1,746,519 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,287 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,573,979 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,803 |
| Countries that Start with G | 0 | - | 4.97 | 1,494,752 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,933 |
| Countries that Start with E | 0 | - | 4.95 | 1,369,339 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,462 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,242 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,760 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,915 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,212 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,434 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,226 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,230,124 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,306 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,824 |
| Random Country to Capital | 0 | - | 4.98 | 913,138 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,266 |
| Biggest Cities in the United States | 0 | - | 4.93 | 968,912 |
| Asia Map Quiz | 0 | - | 4.99 | 908,570 |
| Countries that Start with U | 0 | - | 4.97 | 900,771 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,217 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,014,263 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,393 |
| Counties of England | 0 | - | 4.97 | 790,586 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,805 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,615 |
| Top World Languages | 0 | - | 4.92 | 814,854 |
| Countries of South America | 0 | - | 5.00 | 917,077 |
| Africa Capitals Quiz | 0 | - | 4.99 | 731,858 |
| Asia Capitals Quiz | 0 | - | 4.98 | 687,374 |
| Countries that Start with K | 0 | - | 4.97 | 810,531 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,699 |
| US States with an Empty Map | 0 | - | 5.00 | 619,925 |
| Countries that Start with V | 0 | - | 4.98 | 605,870 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,857 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,531 |
| Flags of Asia Quiz | 0 | - | 4.99 | 607,033 |
| Countries that Start with D | 0 | - | 4.96 | 703,071 |
| Countries That Border Russia | 0 | - | 4.98 | 459,660 |
| One Border Countries | 0 | - | 4.98 | 465,359 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,245 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,074 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,515 |
| Countries with Four Letters | 0 | - | 4.99 | 419,287 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,392 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,313 |
| Countries Bordering France | 0 | - | 4.83 | 400,397 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,194 |
| Northernmost Countries | 0 | - | 4.99 | 358,474 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,713 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,579 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,485 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,597 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,343 |
| Landlocked Countries | 0 | - | 4.99 | 414,923 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,782 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,804 |
| Australia Map Quiz | 0 | - | 4.94 | 342,816 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,287 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,462 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,448 |
| Countries that Start with H | 0 | - | 4.96 | 599,173 |
| Countries that Start with J | 0 | - | 4.98 | 597,243 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,973 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,317 |
| "Land" Countries | 0 | - | 4.98 | 333,994 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,648 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 284,609 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,773 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,804 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,970 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,787 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,308 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,597 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 264,385 |
| Countries with Z | 0 | - | 4.98 | 288,166 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,533 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,404 |
| Flags of North and South America | 0 | - | 4.99 | 368,608 |
| EU Countries Quiz | 0 | - | 4.99 | 270,713 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,779 |
| Countries that Border China | 0 | - | 4.96 | 262,081 |
| French-Speaking Countries | 0 | - | 4.85 | 269,170 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,955 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,401 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,561 |
| Every Country Shape | 0 | - | 5.00 | 460,203 |
| Europe Capital to Country | 0 | - | 4.99 | 248,354 |
| Longest International Borders | 0 | - | 4.99 | 264,034 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,198 |
| Biggest Cities by Language | 0 | - | 4.96 | 243,294 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,463 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,987 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,054 |
| Megacities on a World Map | 0 | - | 4.98 | 251,579 |
| World Currency Quiz | 0 | - | 4.92 | 299,338 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,696 |
| NATO Countries | 0 | - | 4.98 | 276,980 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,078 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,557 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,571 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,750 |
| Official Cities in the UK | 0 | - | 4.89 | 281,187 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,459 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,391 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,893 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,674 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,701 |
| Countries with Megacities | 0 | - | 4.99 | 247,931 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,105 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,311 |
| World Capitals by Map | 0 | - | 5.00 | 284,052 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,071 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,964 |
| World's Busiest Airports | 0 | - | 4.94 | 214,805 |
| Country Chain | 0 | - | 4.96 | 215,994 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,728 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,544 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,871 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,223 |
| Independence from Whom | 0 | - | 4.99 | 210,031 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,841 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,828 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,795 |
| Countries with Six Letters | 0 | - | 4.93 | 210,619 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,746 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,607 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,766 |
| Flags of Oceania | 0 | - | 5.00 | 256,016 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,830 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,336 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,104 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,523 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,925 |
| Countries in their Native Language | 0 | - | 4.99 | 196,903 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,594 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,942 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,546 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,566 |
| Monarchies of the World | 0 | - | 4.94 | 166,984 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,714 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,049 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,638 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,221 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,620 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,181 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,125 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,486 |
| Countries That End in Y | 0 | - | 4.90 | 185,272 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,546 |
| Olympic Host Countries | 0 | - | 4.98 | 199,126 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,189 |
| Regions of Countries #1 | 0 | - | 4.97 | 159,029 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,308 |
| Every European Country Shape | 0 | - | 4.96 | 200,466 |
| Countries of the Middle East | 0 | - | 4.96 | 199,316 |
| Countries by Official Language | 0 | - | 4.95 | 193,053 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,365 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,575 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,875 |
| Counties of Ireland | 0 | - | 4.92 | 193,485 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,647 |
| Countries Bordering India | 0 | - | 4.98 | 163,036 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,776 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,570 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,824 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,736 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,498 |
| European Cities by Clue | 0 | - | 4.70 | 88,858 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,997 |
| Islands by Country #2 | 0 | - | 4.80 | 77,076 |
