| Island Countries | 0 | - | 4.99 | 709,946 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,212 |
| European Countries by Clue | 0 | - | 4.92 | 183,535 |
| Countries by Military Spending | 0 | - | 4.93 | 177,509 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,030 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,365,856 |
| US States Quiz | 0 | - | 5.00 | 16,845,546 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,172 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,100 |
| World Capitals Quiz | 0 | - | 5.00 | 5,066,262 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,920 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,213 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,700 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,535,442 |
| Random Capital to Country | 0 | - | 4.99 | 2,588,951 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,759,543 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,712 |
| All Country Flags of the World | 0 | - | 5.00 | 3,653,352 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,099,300 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,824 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,955 |
| Countries of Africa | 0 | - | 5.00 | 2,532,240 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,343 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,687,454 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,256 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,956 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,819 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,995 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,927 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,862 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,901 |
| Countries that Start with G | 0 | - | 4.97 | 1,501,169 |
| Countries that Start with M | 0 | - | 4.97 | 1,380,163 |
| Countries that Start with E | 0 | - | 4.95 | 1,375,475 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,909 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,732 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,645 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,836 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,529 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,034 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,372 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,378 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,387 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,612 |
| Random Country to Capital | 0 | - | 4.98 | 919,051 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,827 |
| Biggest Cities in the United States | 0 | - | 4.94 | 976,475 |
| Asia Map Quiz | 0 | - | 4.99 | 915,314 |
| Countries that Start with U | 0 | - | 4.97 | 903,665 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,897 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,363 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,856 |
| Counties of England | 0 | - | 4.97 | 795,387 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,508 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,169 |
| Top World Languages | 0 | - | 4.92 | 820,743 |
| Countries of South America | 0 | - | 5.00 | 923,528 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,438 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,618 |
| Countries that Start with K | 0 | - | 4.97 | 814,688 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,159 |
| US States with an Empty Map | 0 | - | 5.00 | 623,692 |
| Countries that Start with V | 0 | - | 4.98 | 608,688 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,842 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,513 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,218 |
| Countries that Start with D | 0 | - | 4.96 | 708,145 |
| Countries That Border Russia | 0 | - | 4.98 | 461,320 |
| One Border Countries | 0 | - | 4.98 | 467,925 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,435 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,695 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,354 |
| Countries with Four Letters | 0 | - | 4.99 | 421,812 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,073 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,578 |
| Countries Bordering France | 0 | - | 4.83 | 402,102 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,888 |
| Northernmost Countries | 0 | - | 4.99 | 360,678 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,158 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,714 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,771 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,728 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,125 |
| Landlocked Countries | 0 | - | 4.99 | 419,383 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,744 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,114 |
| Australia Map Quiz | 0 | - | 4.95 | 344,080 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,713 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,735 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,536 |
| Countries that Start with H | 0 | - | 4.96 | 603,539 |
| Countries that Start with J | 0 | - | 4.98 | 601,343 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,834 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,090 |
| "Land" Countries | 0 | - | 4.98 | 335,904 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,365 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,167 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,745 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,691 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,390 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,929 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,126 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,252 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,734 |
| Countries with Z | 0 | - | 4.98 | 289,909 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,646 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,519 |
| Flags of North and South America | 0 | - | 4.99 | 372,322 |
| EU Countries Quiz | 0 | - | 4.99 | 273,217 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,124 |
| Countries that Border China | 0 | - | 4.96 | 262,944 |
| French-Speaking Countries | 0 | - | 4.85 | 270,291 |
| Countries with Five Letters | 0 | - | 4.96 | 280,681 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,027 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,690 |
| Every Country Shape | 0 | - | 5.00 | 464,249 |
| Europe Capital to Country | 0 | - | 4.99 | 249,734 |
| Longest International Borders | 0 | - | 4.99 | 264,730 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,236 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,141 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,387 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,198 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,746 |
| Megacities on a World Map | 0 | - | 4.98 | 253,681 |
| World Currency Quiz | 0 | - | 4.91 | 302,237 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,604 |
| NATO Countries | 0 | - | 4.98 | 279,556 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,738 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,907 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,328 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,671 |
| Official Cities in the UK | 0 | - | 4.89 | 283,255 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,751 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,852 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,762 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,793 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,817 |
| Countries with Megacities | 0 | - | 4.99 | 261,613 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,131 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,578 |
| World Capitals by Map | 0 | - | 5.00 | 285,793 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,565 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,681 |
| World's Busiest Airports | 0 | - | 4.96 | 232,839 |
| Country Chain | 0 | - | 4.96 | 216,905 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,036 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,447 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,771 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,242 |
| Independence from Whom | 0 | - | 4.99 | 211,430 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,869 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,474 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,343 |
| Countries with Six Letters | 0 | - | 4.94 | 212,582 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,624 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,095 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,207 |
| Flags of Oceania | 0 | - | 5.00 | 258,478 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,034 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,211 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,537 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,107 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,223 |
| Countries in their Native Language | 0 | - | 4.99 | 198,266 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,836 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,959 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,978 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,305 |
| Monarchies of the World | 0 | - | 4.94 | 168,377 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,808 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,890 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,412 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,974 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,819 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,617 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,709 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,324 |
| Countries That End in Y | 0 | - | 4.91 | 185,659 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,152 |
| Olympic Host Countries | 0 | - | 4.98 | 200,505 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,454 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,414 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,836 |
| Every European Country Shape | 0 | - | 4.96 | 201,430 |
| Countries of the Middle East | 0 | - | 4.96 | 200,889 |
| Countries by Official Language | 0 | - | 4.95 | 194,720 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,831 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,237 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,282 |
| Counties of Ireland | 0 | - | 4.92 | 194,896 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,695 |
| Countries Bordering India | 0 | - | 4.98 | 163,364 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,358 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,804 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,757 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,473 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,776 |
| European Cities by Clue | 0 | - | 4.70 | 89,021 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,143 |
| Islands by Country #2 | 0 | - | 4.80 | 77,360 |
