| Island Countries | 0 | - | 4.99 | 712,693 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,686 |
| European Countries by Clue | 0 | - | 4.92 | 184,190 |
| Countries by Military Spending | 0 | - | 4.93 | 179,042 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,820 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,906,584 |
| US States Quiz | 0 | - | 5.00 | 17,002,947 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,023 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,984 |
| World Capitals Quiz | 0 | - | 5.00 | 5,108,386 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,474 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,850,080 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,800 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,475 |
| Random Capital to Country | 0 | - | 4.99 | 2,602,301 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,748 |
| Africa Map Quiz | 0 | - | 5.00 | 2,129,241 |
| All Country Flags of the World | 0 | - | 5.00 | 3,716,872 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,125,907 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,156 |
| Countries that Start with A | 0 | - | 4.98 | 2,176,444 |
| Countries of Africa | 0 | - | 5.00 | 2,561,314 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,739 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,699,297 |
| South America Map Quiz | 0 | - | 5.00 | 1,557,023 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,011 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,478 |
| Countries that Start with S | 0 | - | 4.98 | 1,763,616 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,696 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,338 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,421 |
| Countries that Start with G | 0 | - | 4.97 | 1,511,986 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,622 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,534 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,088 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,110 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,918 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,371 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,160 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,474 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,225 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,258,953 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,159 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,871 |
| Random Country to Capital | 0 | - | 4.98 | 928,751 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,154 |
| Biggest Cities in the United States | 0 | - | 4.94 | 987,589 |
| Asia Map Quiz | 0 | - | 4.99 | 925,565 |
| Countries that Start with U | 0 | - | 4.97 | 908,686 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,074 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,036 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,631 |
| Counties of England | 0 | - | 4.97 | 803,263 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,775 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,674 |
| Top World Languages | 0 | - | 4.92 | 830,247 |
| Countries of South America | 0 | - | 5.00 | 933,173 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,179 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,140 |
| Countries that Start with K | 0 | - | 4.97 | 821,039 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,537 |
| US States with an Empty Map | 0 | - | 5.00 | 628,937 |
| Countries that Start with V | 0 | - | 4.98 | 612,160 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,366 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,202 |
| Flags of Asia Quiz | 0 | - | 4.99 | 620,760 |
| Countries that Start with D | 0 | - | 4.96 | 716,802 |
| Countries That Border Russia | 0 | - | 4.98 | 464,600 |
| One Border Countries | 0 | - | 4.98 | 472,126 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,616 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,140 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,901 |
| Countries with Four Letters | 0 | - | 4.99 | 426,003 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,723 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,734 |
| Countries Bordering France | 0 | - | 4.83 | 405,011 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,637 |
| Northernmost Countries | 0 | - | 4.99 | 364,192 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,325 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,781 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,944 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,730 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,121 |
| Landlocked Countries | 0 | - | 4.99 | 426,283 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,038 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,213 |
| Australia Map Quiz | 0 | - | 4.95 | 346,251 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,178 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,794 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,911 |
| Countries that Start with H | 0 | - | 4.96 | 609,849 |
| Countries that Start with J | 0 | - | 4.98 | 607,220 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,031 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,032 |
| "Land" Countries | 0 | - | 4.98 | 338,486 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,043 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,290 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,446 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,506 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,125 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,048 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,889 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,434 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,040 |
| Countries with Z | 0 | - | 4.98 | 292,555 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,725 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,308 |
| Flags of North and South America | 0 | - | 4.99 | 377,306 |
| EU Countries Quiz | 0 | - | 4.99 | 278,120 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,339 |
| Countries that Border China | 0 | - | 4.96 | 264,349 |
| French-Speaking Countries | 0 | - | 4.85 | 271,732 |
| Countries with Five Letters | 0 | - | 4.96 | 284,116 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,211 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,542 |
| Every Country Shape | 0 | - | 5.00 | 471,511 |
| Europe Capital to Country | 0 | - | 4.99 | 252,222 |
| Longest International Borders | 0 | - | 4.99 | 265,865 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,175 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,722 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,752 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,689 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,182 |
| Megacities on a World Map | 0 | - | 4.98 | 257,086 |
| World Currency Quiz | 0 | - | 4.92 | 306,990 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,339 |
| NATO Countries | 0 | - | 4.98 | 283,594 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,615 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,050 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,888 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,432 |
| Official Cities in the UK | 0 | - | 4.89 | 286,434 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,560 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,613 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,179 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,220 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,870 |
| Countries with Megacities | 0 | - | 4.99 | 267,341 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,700 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,653 |
| World Capitals by Map | 0 | - | 5.00 | 289,575 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,351 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,023 |
| World's Busiest Airports | 0 | - | 4.96 | 237,497 |
| Country Chain | 0 | - | 4.96 | 218,513 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,005 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,832 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,828 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,737 |
| Independence from Whom | 0 | - | 4.99 | 213,171 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,499 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,919 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,061 |
| Countries with Six Letters | 0 | - | 4.94 | 214,585 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,276 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,743 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,185 |
| Flags of Oceania | 0 | - | 5.00 | 262,922 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,859 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,410 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,231 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,525 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,164 |
| Countries in their Native Language | 0 | - | 4.99 | 199,800 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,434 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,750 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,961 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,512 |
| Monarchies of the World | 0 | - | 4.94 | 170,311 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,356 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,024 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,689 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,028 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,681 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,257 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,049 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,335 |
| Countries That End in Y | 0 | - | 4.91 | 186,105 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,787 |
| Olympic Host Countries | 0 | - | 4.98 | 202,033 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,678 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,276 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,707 |
| Every European Country Shape | 0 | - | 4.96 | 203,079 |
| Countries of the Middle East | 0 | - | 4.96 | 203,026 |
| Countries by Official Language | 0 | - | 4.95 | 196,069 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,850 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,188 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,149 |
| Counties of Ireland | 0 | - | 4.92 | 197,397 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,794 |
| Countries Bordering India | 0 | - | 4.98 | 163,835 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,331 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,164 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,323 |
| Countries with the Most Forest | 0 | - | 4.87 | 148,047 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,732 |
| European Cities by Clue | 0 | - | 4.70 | 89,181 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,423 |
| Islands by Country #2 | 0 | - | 4.80 | 77,903 |
