| Island Countries | 0 | - | 4.99 | 709,827 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,143 |
| European Countries by Clue | 0 | - | 4.92 | 183,506 |
| Countries by Military Spending | 0 | - | 4.93 | 177,426 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,926 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,344,813 |
| US States Quiz | 0 | - | 5.00 | 16,838,534 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,611 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,539 |
| World Capitals Quiz | 0 | - | 5.00 | 5,064,604 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,743 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,823,207 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,029 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,964 |
| Random Capital to Country | 0 | - | 4.99 | 2,588,395 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,717 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,181 |
| All Country Flags of the World | 0 | - | 5.00 | 3,650,796 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,786 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,325 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,358 |
| Countries of Africa | 0 | - | 5.00 | 2,531,175 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,977 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,976 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,674 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,545 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,511 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,672 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,517 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,216 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,807 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,810 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,875 |
| Countries that Start with E | 0 | - | 4.95 | 1,375,122 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,650 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,602 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,397 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,587 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,213 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,806 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,090 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,240,643 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,131 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,507 |
| Random Country to Capital | 0 | - | 4.98 | 918,715 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,640 |
| Biggest Cities in the United States | 0 | - | 4.94 | 975,982 |
| Asia Map Quiz | 0 | - | 4.99 | 914,892 |
| Countries that Start with U | 0 | - | 4.97 | 903,494 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,305 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,951 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,703 |
| Counties of England | 0 | - | 4.97 | 795,133 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,339 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,850 |
| Top World Languages | 0 | - | 4.92 | 820,403 |
| Countries of South America | 0 | - | 5.00 | 923,098 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,089 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,280 |
| Countries that Start with K | 0 | - | 4.97 | 814,439 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,085 |
| US States with an Empty Map | 0 | - | 5.00 | 623,483 |
| Countries that Start with V | 0 | - | 4.98 | 608,542 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,657 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,445 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,708 |
| Countries that Start with D | 0 | - | 4.96 | 707,866 |
| Countries That Border Russia | 0 | - | 4.98 | 461,211 |
| One Border Countries | 0 | - | 4.98 | 467,771 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,375 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,552 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,180 |
| Countries with Four Letters | 0 | - | 4.99 | 421,672 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,980 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,970 |
| Countries Bordering France | 0 | - | 4.83 | 401,996 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,788 |
| Northernmost Countries | 0 | - | 4.99 | 360,549 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,043 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,649 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,694 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,656 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,076 |
| Landlocked Countries | 0 | - | 4.99 | 419,118 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,635 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,014 |
| Australia Map Quiz | 0 | - | 4.95 | 343,895 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,608 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,583 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,362 |
| Countries that Start with H | 0 | - | 4.96 | 603,308 |
| Countries that Start with J | 0 | - | 4.98 | 601,137 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,722 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,975 |
| "Land" Countries | 0 | - | 4.98 | 335,828 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,327 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 290,036 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,550 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,646 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,330 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,565 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,042 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,217 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,540 |
| Countries with Z | 0 | - | 4.98 | 289,840 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,573 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,462 |
| Flags of North and South America | 0 | - | 4.99 | 372,129 |
| EU Countries Quiz | 0 | - | 4.99 | 273,030 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,045 |
| Countries that Border China | 0 | - | 4.96 | 262,898 |
| French-Speaking Countries | 0 | - | 4.85 | 270,245 |
| Countries with Five Letters | 0 | - | 4.96 | 280,377 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,982 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,545 |
| Every Country Shape | 0 | - | 5.00 | 463,985 |
| Europe Capital to Country | 0 | - | 4.99 | 249,642 |
| Longest International Borders | 0 | - | 4.99 | 264,690 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,057 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,056 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,125 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,114 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,700 |
| Megacities on a World Map | 0 | - | 4.98 | 253,539 |
| World Currency Quiz | 0 | - | 4.91 | 302,084 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,534 |
| NATO Countries | 0 | - | 4.98 | 279,414 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,698 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,836 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,282 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,595 |
| Official Cities in the UK | 0 | - | 4.89 | 283,169 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,655 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,834 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,700 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,749 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,780 |
| Countries with Megacities | 0 | - | 4.99 | 260,812 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,057 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,507 |
| World Capitals by Map | 0 | - | 5.00 | 285,697 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,535 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,629 |
| World's Busiest Airports | 0 | - | 4.96 | 232,629 |
| Country Chain | 0 | - | 4.96 | 216,845 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,954 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,308 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,718 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,210 |
| Independence from Whom | 0 | - | 4.99 | 211,349 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,809 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,414 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,319 |
| Countries with Six Letters | 0 | - | 4.94 | 212,516 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,604 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,067 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,116 |
| Flags of Oceania | 0 | - | 5.00 | 258,316 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,964 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,158 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,507 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,063 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,083 |
| Countries in their Native Language | 0 | - | 4.99 | 198,214 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,775 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,882 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,955 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,248 |
| Monarchies of the World | 0 | - | 4.94 | 168,317 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,765 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,853 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,369 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,919 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,739 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,593 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,674 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,197 |
| Countries That End in Y | 0 | - | 4.90 | 185,653 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,080 |
| Olympic Host Countries | 0 | - | 4.98 | 200,426 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,364 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,394 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,807 |
| Every European Country Shape | 0 | - | 4.96 | 201,379 |
| Countries of the Middle East | 0 | - | 4.96 | 200,818 |
| Countries by Official Language | 0 | - | 4.95 | 194,659 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,801 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,191 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,263 |
| Counties of Ireland | 0 | - | 4.92 | 194,779 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,591 |
| Countries Bordering India | 0 | - | 4.98 | 163,345 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,108 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,789 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,727 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,437 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,762 |
| European Cities by Clue | 0 | - | 4.70 | 89,007 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,127 |
| Islands by Country #2 | 0 | - | 4.80 | 77,340 |
