| Island Countries | 0 | - | 4.99 | 709,674 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,091 |
| European Countries by Clue | 0 | - | 4.92 | 183,474 |
| Countries by Military Spending | 0 | - | 4.93 | 177,359 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,818 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,323,650 |
| US States Quiz | 0 | - | 5.00 | 16,831,147 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,239 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,929 |
| World Capitals Quiz | 0 | - | 5.00 | 5,062,876 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,441 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,096 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,363 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,491 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,962 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,833 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,634 |
| All Country Flags of the World | 0 | - | 5.00 | 3,648,317 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,136 |
| Countries that Start with B | 0 | - | 4.95 | 2,290,734 |
| Countries that Start with A | 0 | - | 4.98 | 2,158,722 |
| Countries of Africa | 0 | - | 5.00 | 2,530,075 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,518 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,481 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,313 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,064 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,839 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,293 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,053 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,605 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,882 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,370 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,521 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,736 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,195 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,485 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,066 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,256 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,875 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,545 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,742 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,941 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,791 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,391 |
| Random Country to Capital | 0 | - | 4.98 | 918,259 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,424 |
| Biggest Cities in the United States | 0 | - | 4.94 | 975,396 |
| Asia Map Quiz | 0 | - | 4.99 | 914,455 |
| Countries that Start with U | 0 | - | 4.97 | 903,317 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,760 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,544 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,531 |
| Counties of England | 0 | - | 4.97 | 794,794 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,152 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,573 |
| Top World Languages | 0 | - | 4.92 | 820,049 |
| Countries of South America | 0 | - | 5.00 | 922,689 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,825 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,957 |
| Countries that Start with K | 0 | - | 4.97 | 813,927 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,021 |
| US States with an Empty Map | 0 | - | 5.00 | 623,247 |
| Countries that Start with V | 0 | - | 4.98 | 608,368 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,449 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,376 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,428 |
| Countries that Start with D | 0 | - | 4.96 | 707,519 |
| Countries That Border Russia | 0 | - | 4.98 | 461,096 |
| One Border Countries | 0 | - | 4.98 | 467,596 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,296 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,414 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,008 |
| Countries with Four Letters | 0 | - | 4.99 | 421,514 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,867 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,845 |
| Countries Bordering France | 0 | - | 4.83 | 401,882 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,665 |
| Northernmost Countries | 0 | - | 4.99 | 360,391 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,943 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,557 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,601 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,592 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,021 |
| Landlocked Countries | 0 | - | 4.99 | 418,773 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,493 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,932 |
| Australia Map Quiz | 0 | - | 4.95 | 343,837 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,518 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,462 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,160 |
| Countries that Start with H | 0 | - | 4.96 | 602,988 |
| Countries that Start with J | 0 | - | 4.98 | 600,843 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,606 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,612 |
| "Land" Countries | 0 | - | 4.98 | 335,760 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,257 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,855 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,362 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,573 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,240 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,256 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,965 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,179 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,294 |
| Countries with Z | 0 | - | 4.98 | 289,770 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,488 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,376 |
| Flags of North and South America | 0 | - | 4.99 | 371,900 |
| EU Countries Quiz | 0 | - | 4.99 | 272,853 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,964 |
| Countries that Border China | 0 | - | 4.96 | 262,849 |
| French-Speaking Countries | 0 | - | 4.85 | 270,181 |
| Countries with Five Letters | 0 | - | 4.96 | 280,014 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,957 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,421 |
| Every Country Shape | 0 | - | 5.00 | 463,714 |
| Europe Capital to Country | 0 | - | 4.99 | 249,551 |
| Longest International Borders | 0 | - | 4.99 | 264,635 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,854 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,976 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,823 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,057 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,661 |
| Megacities on a World Map | 0 | - | 4.98 | 253,320 |
| World Currency Quiz | 0 | - | 4.91 | 301,902 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,471 |
| NATO Countries | 0 | - | 4.98 | 279,242 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,644 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,733 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,235 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,539 |
| Official Cities in the UK | 0 | - | 4.89 | 283,043 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,571 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,796 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,622 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,696 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,715 |
| Countries with Megacities | 0 | - | 4.99 | 258,687 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,001 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,418 |
| World Capitals by Map | 0 | - | 5.00 | 285,586 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,490 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,589 |
| World's Busiest Airports | 0 | - | 4.96 | 232,394 |
| Country Chain | 0 | - | 4.96 | 216,801 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,890 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,143 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,637 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,143 |
| Independence from Whom | 0 | - | 4.99 | 211,267 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,750 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,370 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,284 |
| Countries with Six Letters | 0 | - | 4.94 | 212,447 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,576 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,038 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,038 |
| Flags of Oceania | 0 | - | 5.00 | 258,159 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,871 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,106 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,475 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,022 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,939 |
| Countries in their Native Language | 0 | - | 4.99 | 198,154 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,701 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,820 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,915 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,203 |
| Monarchies of the World | 0 | - | 4.94 | 168,235 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,713 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,784 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,325 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,888 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,647 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,511 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,636 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,066 |
| Countries That End in Y | 0 | - | 4.90 | 185,643 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,945 |
| Olympic Host Countries | 0 | - | 4.98 | 200,348 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,291 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,362 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,774 |
| Every European Country Shape | 0 | - | 4.96 | 201,295 |
| Countries of the Middle East | 0 | - | 4.96 | 200,732 |
| Countries by Official Language | 0 | - | 4.95 | 194,609 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,777 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,140 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,220 |
| Counties of Ireland | 0 | - | 4.92 | 194,634 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,544 |
| Countries Bordering India | 0 | - | 4.98 | 163,322 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,080 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,762 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,690 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,400 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,741 |
| European Cities by Clue | 0 | - | 4.70 | 88,999 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,116 |
| Islands by Country #2 | 0 | - | 4.80 | 77,316 |
