| Island Countries | 0 | - | 4.99 | 710,061 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,276 |
| European Countries by Clue | 0 | - | 4.92 | 183,563 |
| Countries by Military Spending | 0 | - | 4.93 | 177,587 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,139 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,389,776 |
| US States Quiz | 0 | - | 5.00 | 16,853,879 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,618,756 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,881 |
| World Capitals Quiz | 0 | - | 5.00 | 5,068,148 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,184 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,825,511 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,389 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,535,944 |
| Random Capital to Country | 0 | - | 4.99 | 2,589,575 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,761,583 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,401 |
| All Country Flags of the World | 0 | - | 5.00 | 3,656,492 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,099,930 |
| Countries that Start with B | 0 | - | 4.95 | 2,292,469 |
| Countries that Start with A | 0 | - | 4.98 | 2,160,686 |
| Countries of Africa | 0 | - | 5.00 | 2,533,619 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,647 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,688,038 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,704 |
| Countries that Start with C | 0 | - | 4.96 | 1,820,534 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,039 |
| Countries that Start with S | 0 | - | 4.98 | 1,753,443 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,396 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,584,523 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,923 |
| Countries that Start with G | 0 | - | 4.97 | 1,501,828 |
| Countries that Start with M | 0 | - | 4.97 | 1,380,550 |
| Countries that Start with E | 0 | - | 4.95 | 1,375,932 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,310 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,854 |
| Countries that Start with I | 0 | - | 4.92 | 1,287,068 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,163 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,858 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,272 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,726 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,242,137 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,755 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,765 |
| Random Country to Capital | 0 | - | 4.98 | 919,464 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,056 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,050 |
| Asia Map Quiz | 0 | - | 4.99 | 915,727 |
| Countries that Start with U | 0 | - | 4.97 | 903,879 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,536 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,941 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,010 |
| Counties of England | 0 | - | 4.97 | 795,832 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,733 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,499 |
| Top World Languages | 0 | - | 4.92 | 821,112 |
| Countries of South America | 0 | - | 5.00 | 923,942 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,753 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,935 |
| Countries that Start with K | 0 | - | 4.97 | 814,970 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,261 |
| US States with an Empty Map | 0 | - | 5.00 | 623,927 |
| Countries that Start with V | 0 | - | 4.98 | 608,870 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,034 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,589 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,633 |
| Countries that Start with D | 0 | - | 4.96 | 708,552 |
| Countries That Border Russia | 0 | - | 4.98 | 461,444 |
| One Border Countries | 0 | - | 4.98 | 468,097 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,522 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,936 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,657 |
| Countries with Four Letters | 0 | - | 4.99 | 421,976 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,177 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,084 |
| Countries Bordering France | 0 | - | 4.83 | 402,245 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,999 |
| Northernmost Countries | 0 | - | 4.99 | 360,825 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,228 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,804 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,049 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,819 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,361 |
| Landlocked Countries | 0 | - | 4.99 | 419,653 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,880 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,195 |
| Australia Map Quiz | 0 | - | 4.95 | 344,168 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,838 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,964 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,721 |
| Countries that Start with H | 0 | - | 4.96 | 603,863 |
| Countries that Start with J | 0 | - | 4.98 | 601,638 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,983 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,170 |
| "Land" Countries | 0 | - | 4.98 | 335,977 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,423 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,339 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,972 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,755 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,473 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,356 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,244 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,287 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,955 |
| Countries with Z | 0 | - | 4.98 | 290,273 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,725 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,585 |
| Flags of North and South America | 0 | - | 4.99 | 372,540 |
| EU Countries Quiz | 0 | - | 4.99 | 273,420 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,213 |
| Countries that Border China | 0 | - | 4.96 | 263,005 |
| French-Speaking Countries | 0 | - | 4.85 | 270,339 |
| Countries with Five Letters | 0 | - | 4.96 | 280,921 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,072 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,852 |
| Every Country Shape | 0 | - | 5.00 | 464,575 |
| Europe Capital to Country | 0 | - | 4.99 | 249,830 |
| Longest International Borders | 0 | - | 4.99 | 264,794 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,444 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,225 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,622 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,262 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,805 |
| Megacities on a World Map | 0 | - | 4.98 | 254,023 |
| World Currency Quiz | 0 | - | 4.91 | 302,459 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,649 |
| NATO Countries | 0 | - | 4.98 | 279,737 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,802 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,005 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,380 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,754 |
| Official Cities in the UK | 0 | - | 4.89 | 283,380 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,832 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,882 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,830 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,862 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,857 |
| Countries with Megacities | 0 | - | 4.99 | 262,282 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,179 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,680 |
| World Capitals by Map | 0 | - | 5.00 | 285,994 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,601 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,717 |
| World's Busiest Airports | 0 | - | 4.96 | 233,053 |
| Country Chain | 0 | - | 4.96 | 216,961 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,134 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,558 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,831 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,284 |
| Independence from Whom | 0 | - | 4.99 | 211,506 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,919 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,528 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,376 |
| Countries with Six Letters | 0 | - | 4.94 | 212,661 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,655 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,138 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,307 |
| Flags of Oceania | 0 | - | 5.00 | 258,644 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,117 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,263 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,569 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,188 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,380 |
| Countries in their Native Language | 0 | - | 4.99 | 198,326 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,904 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,021 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,007 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,389 |
| Monarchies of the World | 0 | - | 4.94 | 168,450 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,852 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,951 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,468 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,032 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,904 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,642 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,752 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,418 |
| Countries That End in Y | 0 | - | 4.91 | 185,676 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,223 |
| Olympic Host Countries | 0 | - | 4.98 | 200,570 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,561 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,456 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,865 |
| Every European Country Shape | 0 | - | 4.96 | 201,469 |
| Countries of the Middle East | 0 | - | 4.96 | 200,953 |
| Countries by Official Language | 0 | - | 4.95 | 194,784 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,869 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,285 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,306 |
| Counties of Ireland | 0 | - | 4.92 | 194,996 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,776 |
| Countries Bordering India | 0 | - | 4.98 | 163,381 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,531 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,826 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,801 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,493 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,792 |
| European Cities by Clue | 0 | - | 4.70 | 89,035 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,153 |
| Islands by Country #2 | 0 | - | 4.80 | 77,372 |
