| Island Countries | 0 | - | 4.99 | 709,771 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,118 |
| European Countries by Clue | 0 | - | 4.92 | 183,494 |
| Countries by Military Spending | 0 | - | 4.93 | 177,397 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,888 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,336,854 |
| US States Quiz | 0 | - | 5.00 | 16,835,734 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,148 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,327 |
| World Capitals Quiz | 0 | - | 5.00 | 5,063,921 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,274 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,792 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,783 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,789 |
| Random Capital to Country | 0 | - | 4.99 | 2,588,247 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,087 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,028 |
| All Country Flags of the World | 0 | - | 5.00 | 3,649,915 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,601 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,087 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,107 |
| Countries of Africa | 0 | - | 5.00 | 2,530,765 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,789 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,748 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,512 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,363 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,419 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,521 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,327 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,977 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,457 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,627 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,739 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,958 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,534 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,563 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,267 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,448 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,086 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,719 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,943 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,240,407 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,996 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,464 |
| Random Country to Capital | 0 | - | 4.98 | 918,512 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,552 |
| Biggest Cities in the United States | 0 | - | 4.94 | 975,789 |
| Asia Map Quiz | 0 | - | 4.99 | 914,743 |
| Countries that Start with U | 0 | - | 4.97 | 903,420 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,098 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,784 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,645 |
| Counties of England | 0 | - | 4.97 | 795,014 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,279 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,743 |
| Top World Languages | 0 | - | 4.92 | 820,276 |
| Countries of South America | 0 | - | 5.00 | 922,942 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,003 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,166 |
| Countries that Start with K | 0 | - | 4.97 | 814,253 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,061 |
| US States with an Empty Map | 0 | - | 5.00 | 623,397 |
| Countries that Start with V | 0 | - | 4.98 | 608,471 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,585 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,428 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,607 |
| Countries that Start with D | 0 | - | 4.96 | 707,737 |
| Countries That Border Russia | 0 | - | 4.98 | 461,172 |
| One Border Countries | 0 | - | 4.98 | 467,705 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,345 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,506 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,125 |
| Countries with Four Letters | 0 | - | 4.99 | 421,610 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,953 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,924 |
| Countries Bordering France | 0 | - | 4.83 | 401,954 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,758 |
| Northernmost Countries | 0 | - | 4.99 | 360,494 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,019 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,618 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,670 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,629 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,057 |
| Landlocked Countries | 0 | - | 4.99 | 418,987 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,599 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,988 |
| Australia Map Quiz | 0 | - | 4.95 | 343,881 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,568 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,534 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,272 |
| Countries that Start with H | 0 | - | 4.96 | 603,180 |
| Countries that Start with J | 0 | - | 4.98 | 601,023 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,688 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,850 |
| "Land" Countries | 0 | - | 4.98 | 335,802 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,303 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,977 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,478 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,619 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,307 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,481 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,017 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,205 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,450 |
| Countries with Z | 0 | - | 4.98 | 289,814 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,545 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,440 |
| Flags of North and South America | 0 | - | 4.99 | 372,049 |
| EU Countries Quiz | 0 | - | 4.99 | 272,966 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,018 |
| Countries that Border China | 0 | - | 4.96 | 262,883 |
| French-Speaking Countries | 0 | - | 4.85 | 270,220 |
| Countries with Five Letters | 0 | - | 4.96 | 280,265 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,972 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,504 |
| Every Country Shape | 0 | - | 5.00 | 463,892 |
| Europe Capital to Country | 0 | - | 4.99 | 249,615 |
| Longest International Borders | 0 | - | 4.99 | 264,670 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,973 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,026 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,031 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,092 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,685 |
| Megacities on a World Map | 0 | - | 4.98 | 253,441 |
| World Currency Quiz | 0 | - | 4.91 | 302,015 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,512 |
| NATO Countries | 0 | - | 4.98 | 279,373 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,673 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,804 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,264 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,576 |
| Official Cities in the UK | 0 | - | 4.89 | 283,122 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,632 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,823 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,674 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,729 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,760 |
| Countries with Megacities | 0 | - | 4.99 | 260,173 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,029 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,469 |
| World Capitals by Map | 0 | - | 5.00 | 285,660 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,524 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,619 |
| World's Busiest Airports | 0 | - | 4.96 | 232,544 |
| Country Chain | 0 | - | 4.96 | 216,832 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,927 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,247 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,695 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,189 |
| Independence from Whom | 0 | - | 4.99 | 211,322 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,785 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,400 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,307 |
| Countries with Six Letters | 0 | - | 4.94 | 212,489 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,597 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,055 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,081 |
| Flags of Oceania | 0 | - | 5.00 | 258,266 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,923 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,141 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,498 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,047 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,037 |
| Countries in their Native Language | 0 | - | 4.99 | 198,191 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,745 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,867 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,943 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,232 |
| Monarchies of the World | 0 | - | 4.94 | 168,287 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,753 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,831 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,356 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,909 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,715 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,562 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,661 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,149 |
| Countries That End in Y | 0 | - | 4.90 | 185,650 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,028 |
| Olympic Host Countries | 0 | - | 4.98 | 200,404 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,336 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,383 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,793 |
| Every European Country Shape | 0 | - | 4.96 | 201,348 |
| Countries of the Middle East | 0 | - | 4.96 | 200,783 |
| Countries by Official Language | 0 | - | 4.95 | 194,645 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,794 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,172 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,244 |
| Counties of Ireland | 0 | - | 4.92 | 194,740 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,579 |
| Countries Bordering India | 0 | - | 4.98 | 163,337 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,099 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,777 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,715 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,425 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,757 |
| European Cities by Clue | 0 | - | 4.70 | 89,006 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,121 |
| Islands by Country #2 | 0 | - | 4.80 | 77,335 |
