| Island Countries | 0 | - | 4.99 | 707,308 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,051 |
| European Countries by Clue | 0 | - | 4.92 | 182,309 |
| Countries by Military Spending | 0 | - | 4.93 | 176,285 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,200 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,863,203 |
| US States Quiz | 0 | - | 5.00 | 16,682,543 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,302 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,974 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,577 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,068 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,066 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,427 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,524,888 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,539 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,837 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,985 |
| All Country Flags of the World | 0 | - | 5.00 | 3,595,476 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,581 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,309 |
| Countries that Start with A | 0 | - | 4.98 | 2,145,015 |
| Countries of Africa | 0 | - | 5.00 | 2,505,048 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,388 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,326 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,464 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,036 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,035 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,424 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,765 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,377 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,665 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,692 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,456 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,497 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,720 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,532 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,383 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,785 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,549 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,086,743 |
| Countries that Start with N | 0 | - | 4.93 | 1,108,967 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,525 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,093 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,598 |
| Random Country to Capital | 0 | - | 4.98 | 910,685 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,569 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,328 |
| Asia Map Quiz | 0 | - | 4.99 | 906,046 |
| Countries that Start with U | 0 | - | 4.97 | 899,373 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,944 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,636 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 729,198 |
| Counties of England | 0 | - | 4.97 | 788,461 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,456 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,583 |
| Top World Languages | 0 | - | 4.92 | 812,152 |
| Countries of South America | 0 | - | 5.00 | 913,617 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,513 |
| Asia Capitals Quiz | 0 | - | 4.98 | 684,974 |
| Countries that Start with K | 0 | - | 4.96 | 808,737 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,944 |
| US States with an Empty Map | 0 | - | 5.00 | 618,260 |
| Countries that Start with V | 0 | - | 4.98 | 604,634 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,312 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,039 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,664 |
| Countries that Start with D | 0 | - | 4.96 | 700,683 |
| Countries That Border Russia | 0 | - | 4.98 | 458,598 |
| One Border Countries | 0 | - | 4.98 | 463,680 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,394 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,889 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,072 |
| Countries with Four Letters | 0 | - | 4.99 | 418,116 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,212 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,503 |
| Countries Bordering France | 0 | - | 4.85 | 397,147 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,232 |
| Northernmost Countries | 0 | - | 4.99 | 357,334 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,098 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,876 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,754 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,089 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,964 |
| Landlocked Countries | 0 | - | 4.99 | 412,986 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,915 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,090 |
| Australia Map Quiz | 0 | - | 4.94 | 342,267 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,534 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,301 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,078 |
| Countries that Start with H | 0 | - | 4.96 | 597,207 |
| Countries that Start with J | 0 | - | 4.98 | 595,289 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,022 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,540 |
| "Land" Countries | 0 | - | 4.98 | 333,461 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,271 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,599 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,387 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 293,966 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,175 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,377 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,591 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,103 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,786 |
| Countries with Z | 0 | - | 4.98 | 287,595 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,924 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,734 |
| Flags of North and South America | 0 | - | 4.99 | 365,851 |
| EU Countries Quiz | 0 | - | 4.99 | 269,518 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,007 |
| Countries that Border China | 0 | - | 4.96 | 261,715 |
| French-Speaking Countries | 0 | - | 4.85 | 268,644 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,521 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,095 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,575 |
| Every Country Shape | 0 | - | 5.00 | 458,119 |
| Europe Capital to Country | 0 | - | 4.99 | 247,325 |
| Longest International Borders | 0 | - | 4.99 | 263,397 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,775 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,718 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,169 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,468 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,691 |
| Megacities on a World Map | 0 | - | 4.98 | 250,499 |
| World Currency Quiz | 0 | - | 4.92 | 297,913 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,190 |
| NATO Countries | 0 | - | 4.98 | 275,217 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,818 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,876 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 223,918 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,294 |
| Official Cities in the UK | 0 | - | 4.89 | 280,227 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,912 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,122 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,155 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,261 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,333 |
| Countries with Megacities | 0 | - | 4.99 | 246,281 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,640 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,742 |
| World Capitals by Map | 0 | - | 5.00 | 282,889 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,842 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,269 |
| World's Busiest Airports | 0 | - | 4.94 | 210,108 |
| Country Chain | 0 | - | 4.96 | 215,591 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,249 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,449 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,505 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,798 |
| Independence from Whom | 0 | - | 4.99 | 209,514 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,365 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,532 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,410 |
| Countries with Six Letters | 0 | - | 4.93 | 210,216 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,488 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,418 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,188 |
| Flags of Oceania | 0 | - | 5.00 | 254,725 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,305 |
| Largest Countries with No Borders | 0 | - | 4.97 | 219,161 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,897 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,259 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,761 |
| Countries in their Native Language | 0 | - | 4.99 | 196,500 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,189 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,095 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,314 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,201 |
| Monarchies of the World | 0 | - | 4.94 | 166,417 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,446 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,601 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,273 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,830 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,012 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,039 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,807 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,580 |
| Countries That End in Y | 0 | - | 4.90 | 185,161 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,117 |
| Olympic Host Countries | 0 | - | 4.98 | 198,779 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,544 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,853 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,020 |
| Every European Country Shape | 0 | - | 4.95 | 199,860 |
| Countries of the Middle East | 0 | - | 4.96 | 198,735 |
| Countries by Official Language | 0 | - | 4.95 | 192,612 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,131 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,972 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,650 |
| Counties of Ireland | 0 | - | 4.92 | 192,836 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,324 |
| Countries Bordering India | 0 | - | 4.98 | 162,546 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,595 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,459 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,565 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,558 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,380 |
| European Cities by Clue | 0 | - | 4.70 | 88,772 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,927 |
| Islands by Country #2 | 0 | - | 4.80 | 76,945 |
