| Island Countries | 0 | - | 4.99 | 708,389 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,088 |
| European Countries by Clue | 0 | - | 4.92 | 182,817 |
| Countries by Military Spending | 0 | - | 4.93 | 176,758 |
| Countries by Three Words #2 | 0 | - | 4.97 | 200,425 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,070,651 |
| US States Quiz | 0 | - | 5.00 | 16,751,200 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,597,946 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,094 |
| World Capitals Quiz | 0 | - | 5.00 | 5,043,638 |
| Europe Map Quiz | 0 | - | 5.00 | 4,740,633 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,808,851 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,551 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,529,486 |
| Random Capital to Country | 0 | - | 4.99 | 2,582,040 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,732,161 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,398 |
| All Country Flags of the World | 0 | - | 5.00 | 3,619,250 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,092,239 |
| Countries that Start with B | 0 | - | 4.95 | 2,283,806 |
| Countries that Start with A | 0 | - | 4.98 | 2,151,298 |
| Countries of Africa | 0 | - | 5.00 | 2,516,165 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,914 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,680,918 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,234 |
| Countries that Start with C | 0 | - | 4.96 | 1,813,466 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,378,352 |
| Countries that Start with S | 0 | - | 4.98 | 1,747,333 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,204 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,575,227 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,891 |
| Countries that Start with G | 0 | - | 4.97 | 1,495,605 |
| Countries that Start with M | 0 | - | 4.97 | 1,375,596 |
| Countries that Start with E | 0 | - | 4.95 | 1,370,089 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,108 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,426 |
| Countries that Start with I | 0 | - | 4.92 | 1,282,413 |
| Countries that Start with P | 0 | - | 4.94 | 1,210,524 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,924 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,896 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,857 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,784 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,947 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,091 |
| Random Country to Capital | 0 | - | 4.98 | 913,763 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,729 |
| Biggest Cities in the United States | 0 | - | 4.93 | 970,005 |
| Asia Map Quiz | 0 | - | 4.99 | 909,403 |
| Countries that Start with U | 0 | - | 4.97 | 901,162 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,539 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,426 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,738 |
| Counties of England | 0 | - | 4.97 | 791,393 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,154 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,324 |
| Top World Languages | 0 | - | 4.92 | 815,676 |
| Countries of South America | 0 | - | 5.00 | 918,084 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,381 |
| Asia Capitals Quiz | 0 | - | 4.98 | 687,971 |
| Countries that Start with K | 0 | - | 4.97 | 811,029 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,896 |
| US States with an Empty Map | 0 | - | 5.00 | 620,493 |
| Countries that Start with V | 0 | - | 4.98 | 606,189 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,322 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,662 |
| Flags of Asia Quiz | 0 | - | 4.99 | 607,708 |
| Countries that Start with D | 0 | - | 4.96 | 703,730 |
| Countries That Border Russia | 0 | - | 4.98 | 459,919 |
| One Border Countries | 0 | - | 4.98 | 465,828 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,432 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,526 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,872 |
| Countries with Four Letters | 0 | - | 4.99 | 419,646 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,677 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,522 |
| Countries Bordering France | 0 | - | 4.83 | 400,690 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,440 |
| Northernmost Countries | 0 | - | 4.99 | 358,783 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,906 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,865 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,661 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,814 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,454 |
| Landlocked Countries | 0 | - | 4.99 | 415,524 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,042 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,008 |
| Australia Map Quiz | 0 | - | 4.94 | 342,970 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,467 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,823 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,009 |
| Countries that Start with H | 0 | - | 4.96 | 599,751 |
| Countries that Start with J | 0 | - | 4.98 | 597,784 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,250 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,576 |
| "Land" Countries | 0 | - | 4.98 | 334,133 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,750 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 287,119 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,161 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,945 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,153 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,571 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,892 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,688 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 266,915 |
| Countries with Z | 0 | - | 4.98 | 288,285 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,776 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,620 |
| Flags of North and South America | 0 | - | 4.99 | 369,168 |
| EU Countries Quiz | 0 | - | 4.99 | 271,009 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,986 |
| Countries that Border China | 0 | - | 4.96 | 262,215 |
| French-Speaking Countries | 0 | - | 4.85 | 269,334 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,075 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,485 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,843 |
| Every Country Shape | 0 | - | 5.00 | 460,708 |
| Europe Capital to Country | 0 | - | 4.99 | 248,532 |
| Longest International Borders | 0 | - | 4.99 | 264,144 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,616 |
| Biggest Cities by Language | 0 | - | 4.96 | 244,533 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,950 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,170 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,130 |
| Megacities on a World Map | 0 | - | 4.98 | 251,882 |
| World Currency Quiz | 0 | - | 4.92 | 299,724 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,810 |
| NATO Countries | 0 | - | 4.98 | 277,374 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,149 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,738 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,693 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,869 |
| Official Cities in the UK | 0 | - | 4.89 | 281,475 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,628 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,449 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,018 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,790 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,797 |
| Countries with Megacities | 0 | - | 4.99 | 248,295 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,322 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,471 |
| World Capitals by Map | 0 | - | 5.00 | 284,335 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,155 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,080 |
| World's Busiest Airports | 0 | - | 4.95 | 215,984 |
| Country Chain | 0 | - | 4.96 | 216,152 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,899 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,761 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,000 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,314 |
| Independence from Whom | 0 | - | 4.99 | 210,195 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,041 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,895 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,937 |
| Countries with Six Letters | 0 | - | 4.93 | 210,743 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,803 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,663 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,953 |
| Flags of Oceania | 0 | - | 5.00 | 256,346 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,993 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,495 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,170 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,581 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,253 |
| Countries in their Native Language | 0 | - | 4.99 | 197,049 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,720 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,130 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,598 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,646 |
| Monarchies of the World | 0 | - | 4.94 | 167,128 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,790 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,169 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,747 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,281 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,782 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,223 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,209 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,786 |
| Countries That End in Y | 0 | - | 4.90 | 185,301 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,751 |
| Olympic Host Countries | 0 | - | 4.98 | 199,277 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,387 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,080 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,378 |
| Every European Country Shape | 0 | - | 4.96 | 200,617 |
| Countries of the Middle East | 0 | - | 4.96 | 199,526 |
| Countries by Official Language | 0 | - | 4.95 | 193,222 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,432 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,664 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,933 |
| Counties of Ireland | 0 | - | 4.92 | 193,702 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,732 |
| Countries Bordering India | 0 | - | 4.98 | 163,114 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,842 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,595 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,899 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,794 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,552 |
| European Cities by Clue | 0 | - | 4.70 | 88,889 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,016 |
| Islands by Country #2 | 0 | - | 4.80 | 77,122 |
