| Island Countries | 0 | - | 4.99 | 712,594 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,630 |
| European Countries by Clue | 0 | - | 4.92 | 184,169 |
| Countries by Military Spending | 0 | - | 4.93 | 179,014 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,703 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,884,161 |
| US States Quiz | 0 | - | 5.00 | 16,997,368 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,653,411 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,395 |
| World Capitals Quiz | 0 | - | 5.00 | 5,106,458 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,425 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,849,055 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,838 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,085 |
| Random Capital to Country | 0 | - | 4.99 | 2,601,628 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,804,837 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,772 |
| All Country Flags of the World | 0 | - | 5.00 | 3,714,353 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,124,474 |
| Countries that Start with B | 0 | - | 4.95 | 2,306,523 |
| Countries that Start with A | 0 | - | 4.98 | 2,175,802 |
| Countries of Africa | 0 | - | 5.00 | 2,560,017 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,538 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,698,840 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,760 |
| Countries that Start with C | 0 | - | 4.96 | 1,831,494 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,326 |
| Countries that Start with S | 0 | - | 4.98 | 1,763,203 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,224 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,599,663 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,520 |
| Countries that Start with G | 0 | - | 4.97 | 1,511,562 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,301 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,116 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,707 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,038 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,605 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,052 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,820 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,238 |
| Countries that Start with N | 0 | - | 4.93 | 1,123,898 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,258,205 |
| Countries that Start with L | 0 | - | 4.98 | 1,096,850 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,767 |
| Random Country to Capital | 0 | - | 4.98 | 928,205 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,949 |
| Biggest Cities in the United States | 0 | - | 4.94 | 987,131 |
| Asia Map Quiz | 0 | - | 4.99 | 925,246 |
| Countries that Start with U | 0 | - | 4.97 | 908,501 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,461 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,596 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,477 |
| Counties of England | 0 | - | 4.97 | 802,978 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,628 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,401 |
| Top World Languages | 0 | - | 4.92 | 829,842 |
| Countries of South America | 0 | - | 5.00 | 932,770 |
| Africa Capitals Quiz | 0 | - | 4.99 | 743,926 |
| Asia Capitals Quiz | 0 | - | 4.98 | 698,913 |
| Countries that Start with K | 0 | - | 4.97 | 820,791 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,469 |
| US States with an Empty Map | 0 | - | 5.00 | 628,741 |
| Countries that Start with V | 0 | - | 4.98 | 612,020 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,176 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,131 |
| Flags of Asia Quiz | 0 | - | 4.99 | 620,413 |
| Countries that Start with D | 0 | - | 4.96 | 716,450 |
| Countries That Border Russia | 0 | - | 4.98 | 464,515 |
| One Border Countries | 0 | - | 4.98 | 471,980 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,524 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,002 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,728 |
| Countries with Four Letters | 0 | - | 4.99 | 425,867 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,610 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,553 |
| Countries Bordering France | 0 | - | 4.83 | 404,922 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,521 |
| Northernmost Countries | 0 | - | 4.99 | 364,043 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,252 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,709 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,871 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,681 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,030 |
| Landlocked Countries | 0 | - | 4.99 | 425,935 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,905 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,125 |
| Australia Map Quiz | 0 | - | 4.95 | 346,169 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,054 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,653 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,733 |
| Countries that Start with H | 0 | - | 4.96 | 609,617 |
| Countries that Start with J | 0 | - | 4.98 | 607,002 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,894 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 336,944 |
| "Land" Countries | 0 | - | 4.98 | 338,405 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,014 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,238 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,259 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,434 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,038 |
| Flags of Africa Quiz | 0 | - | 5.00 | 477,645 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,760 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,342 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,882 |
| Countries with Z | 0 | - | 4.98 | 292,473 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,652 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,053 |
| Flags of North and South America | 0 | - | 4.99 | 377,035 |
| EU Countries Quiz | 0 | - | 4.99 | 277,956 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,243 |
| Countries that Border China | 0 | - | 4.96 | 264,291 |
| French-Speaking Countries | 0 | - | 4.85 | 271,691 |
| Countries with Five Letters | 0 | - | 4.96 | 283,791 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,192 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,417 |
| Every Country Shape | 0 | - | 5.00 | 471,202 |
| Europe Capital to Country | 0 | - | 4.99 | 252,107 |
| Longest International Borders | 0 | - | 4.99 | 265,817 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,018 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,675 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,456 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,639 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,128 |
| Megacities on a World Map | 0 | - | 4.98 | 256,961 |
| World Currency Quiz | 0 | - | 4.92 | 306,793 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,271 |
| NATO Countries | 0 | - | 4.98 | 283,467 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,585 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,957 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,820 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,364 |
| Official Cities in the UK | 0 | - | 4.89 | 286,281 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,498 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,575 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,132 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,143 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,824 |
| Countries with Megacities | 0 | - | 4.99 | 267,149 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,636 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,465 |
| World Capitals by Map | 0 | - | 5.00 | 289,401 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,320 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,988 |
| World's Busiest Airports | 0 | - | 4.96 | 237,334 |
| Country Chain | 0 | - | 4.96 | 218,467 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,916 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,767 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,377 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,702 |
| Independence from Whom | 0 | - | 4.99 | 213,081 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,455 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,872 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,032 |
| Countries with Six Letters | 0 | - | 4.94 | 214,501 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,249 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,713 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,102 |
| Flags of Oceania | 0 | - | 5.00 | 262,738 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,789 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,355 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,207 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,496 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,061 |
| Countries in their Native Language | 0 | - | 4.99 | 199,750 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,390 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,687 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,930 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,474 |
| Monarchies of the World | 0 | - | 4.94 | 170,223 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,295 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,980 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,647 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,994 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,602 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,232 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,015 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,247 |
| Countries That End in Y | 0 | - | 4.91 | 186,095 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,719 |
| Olympic Host Countries | 0 | - | 4.98 | 201,973 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,597 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,232 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,669 |
| Every European Country Shape | 0 | - | 4.96 | 203,002 |
| Countries of the Middle East | 0 | - | 4.96 | 202,964 |
| Countries by Official Language | 0 | - | 4.95 | 196,010 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,823 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,150 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,118 |
| Counties of Ireland | 0 | - | 4.92 | 197,326 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,750 |
| Countries Bordering India | 0 | - | 4.98 | 163,821 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,265 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,150 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,184 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,988 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,680 |
| European Cities by Clue | 0 | - | 4.70 | 89,177 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,417 |
| Islands by Country #2 | 0 | - | 4.80 | 77,875 |
