| Island Countries | 0 | - | 4.99 | 709,822 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,139 |
| European Countries by Clue | 0 | - | 4.92 | 183,505 |
| Countries by Military Spending | 0 | - | 4.93 | 177,421 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,922 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,344,084 |
| US States Quiz | 0 | - | 5.00 | 16,838,326 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,563 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,516 |
| World Capitals Quiz | 0 | - | 5.00 | 5,064,548 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,705 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,823,161 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,994 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,946 |
| Random Capital to Country | 0 | - | 4.99 | 2,588,392 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,639 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,168 |
| All Country Flags of the World | 0 | - | 5.00 | 3,650,723 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,773 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,306 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,333 |
| Countries of Africa | 0 | - | 5.00 | 2,531,140 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,965 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,944 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,661 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,529 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,503 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,662 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,503 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,190 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,770 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,793 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,866 |
| Countries that Start with E | 0 | - | 4.95 | 1,375,108 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,630 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,602 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,386 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,572 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,199 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,796 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,081 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,240,614 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,120 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,502 |
| Random Country to Capital | 0 | - | 4.98 | 918,705 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,631 |
| Biggest Cities in the United States | 0 | - | 4.94 | 975,959 |
| Asia Map Quiz | 0 | - | 4.99 | 914,884 |
| Countries that Start with U | 0 | - | 4.97 | 903,491 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,288 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,942 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,695 |
| Counties of England | 0 | - | 4.97 | 795,128 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,337 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,838 |
| Top World Languages | 0 | - | 4.92 | 820,387 |
| Countries of South America | 0 | - | 5.00 | 923,089 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,078 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,273 |
| Countries that Start with K | 0 | - | 4.97 | 814,429 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,083 |
| US States with an Empty Map | 0 | - | 5.00 | 623,472 |
| Countries that Start with V | 0 | - | 4.98 | 608,539 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,651 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,442 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,689 |
| Countries that Start with D | 0 | - | 4.96 | 707,852 |
| Countries That Border Russia | 0 | - | 4.98 | 461,205 |
| One Border Countries | 0 | - | 4.98 | 467,761 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,374 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,543 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,177 |
| Countries with Four Letters | 0 | - | 4.99 | 421,664 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,977 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,965 |
| Countries Bordering France | 0 | - | 4.83 | 401,994 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,786 |
| Northernmost Countries | 0 | - | 4.99 | 360,545 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,042 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,643 |
| 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 | 307,075 |
| Landlocked Countries | 0 | - | 4.99 | 419,098 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,633 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,012 |
| Australia Map Quiz | 0 | - | 4.95 | 343,894 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,604 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,582 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,359 |
| Countries that Start with H | 0 | - | 4.96 | 603,299 |
| Countries that Start with J | 0 | - | 4.98 | 601,127 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,719 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,965 |
| "Land" Countries | 0 | - | 4.98 | 335,828 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,323 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 290,031 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,543 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,646 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,329 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,550 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,041 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,216 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,532 |
| Countries with Z | 0 | - | 4.98 | 289,837 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,572 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,459 |
| Flags of North and South America | 0 | - | 4.99 | 372,117 |
| EU Countries Quiz | 0 | - | 4.99 | 273,027 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,045 |
| Countries that Border China | 0 | - | 4.96 | 262,897 |
| French-Speaking Countries | 0 | - | 4.85 | 270,243 |
| Countries with Five Letters | 0 | - | 4.96 | 280,361 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,982 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,542 |
| Every Country Shape | 0 | - | 5.00 | 463,981 |
| Europe Capital to Country | 0 | - | 4.99 | 249,640 |
| Longest International Borders | 0 | - | 4.99 | 264,688 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,048 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,053 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,112 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,114 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,699 |
| Megacities on a World Map | 0 | - | 4.98 | 253,529 |
| World Currency Quiz | 0 | - | 4.91 | 302,078 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,533 |
| NATO Countries | 0 | - | 4.98 | 279,408 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,697 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,834 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,282 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,594 |
| Official Cities in the UK | 0 | - | 4.89 | 283,162 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,654 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,833 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,699 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,747 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,779 |
| Countries with Megacities | 0 | - | 4.99 | 260,756 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,057 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,501 |
| World Capitals by Map | 0 | - | 5.00 | 285,696 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,533 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,629 |
| World's Busiest Airports | 0 | - | 4.96 | 232,615 |
| Country Chain | 0 | - | 4.96 | 216,844 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,952 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,308 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,716 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,206 |
| Independence from Whom | 0 | - | 4.99 | 211,347 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,806 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,413 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,319 |
| Countries with Six Letters | 0 | - | 4.94 | 212,514 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,603 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,067 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,114 |
| Flags of Oceania | 0 | - | 5.00 | 258,307 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,961 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,157 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,506 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,061 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,078 |
| Countries in their Native Language | 0 | - | 4.99 | 198,212 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,766 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,880 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,954 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,245 |
| Monarchies of the World | 0 | - | 4.94 | 168,315 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,765 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,848 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,366 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,918 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,738 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,591 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,674 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,195 |
| Countries That End in Y | 0 | - | 4.90 | 185,653 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,075 |
| Olympic Host Countries | 0 | - | 4.98 | 200,425 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,361 |
| 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 | 201,373 |
| Countries of the Middle East | 0 | - | 4.96 | 200,817 |
| Countries by Official Language | 0 | - | 4.95 | 194,657 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,800 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,190 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,260 |
| Counties of Ireland | 0 | - | 4.92 | 194,779 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,589 |
| 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 | 136,788 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,726 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,437 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,761 |
| 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 |
