| Island Countries | 0 | - | 4.99 | 709,618 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,058 |
| European Countries by Clue | 0 | - | 4.92 | 183,461 |
| Countries by Military Spending | 0 | - | 4.93 | 177,342 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,775 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,314,278 |
| US States Quiz | 0 | - | 5.00 | 16,828,773 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,656 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,646 |
| World Capitals Quiz | 0 | - | 5.00 | 5,062,143 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,019 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,605 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,063 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,321 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,751 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,000 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,464 |
| All Country Flags of the World | 0 | - | 5.00 | 3,647,342 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,884 |
| Countries that Start with B | 0 | - | 4.95 | 2,290,473 |
| Countries that Start with A | 0 | - | 4.98 | 2,158,483 |
| Countries of Africa | 0 | - | 5.00 | 2,529,545 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,415 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,254 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,165 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,851 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,736 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,121 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,891 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,355 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,509 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,231 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,378 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,571 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,017 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,456 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,936 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,114 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,739 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,465 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,620 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,712 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,672 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,350 |
| Random Country to Capital | 0 | - | 4.98 | 918,041 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,327 |
| Biggest Cities in the United States | 0 | - | 4.93 | 975,231 |
| Asia Map Quiz | 0 | - | 4.99 | 914,307 |
| Countries that Start with U | 0 | - | 4.97 | 903,235 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,525 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,351 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,479 |
| Counties of England | 0 | - | 4.97 | 794,652 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,086 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,474 |
| Top World Languages | 0 | - | 4.92 | 819,907 |
| Countries of South America | 0 | - | 5.00 | 922,537 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,681 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,870 |
| Countries that Start with K | 0 | - | 4.97 | 813,818 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,997 |
| US States with an Empty Map | 0 | - | 5.00 | 623,185 |
| Countries that Start with V | 0 | - | 4.98 | 608,297 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,371 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,359 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,313 |
| Countries that Start with D | 0 | - | 4.96 | 707,382 |
| Countries That Border Russia | 0 | - | 4.98 | 461,064 |
| One Border Countries | 0 | - | 4.98 | 467,523 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,276 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,342 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,943 |
| Countries with Four Letters | 0 | - | 4.99 | 421,446 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,820 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,801 |
| Countries Bordering France | 0 | - | 4.83 | 401,837 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,614 |
| Northernmost Countries | 0 | - | 4.99 | 360,344 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,912 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,512 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,572 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,557 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,004 |
| Landlocked Countries | 0 | - | 4.99 | 418,602 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,455 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,892 |
| Australia Map Quiz | 0 | - | 4.95 | 343,800 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,477 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,394 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,077 |
| Countries that Start with H | 0 | - | 4.96 | 602,876 |
| Countries that Start with J | 0 | - | 4.98 | 600,730 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,567 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,586 |
| "Land" Countries | 0 | - | 4.98 | 335,727 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,231 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,800 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,230 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,553 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,209 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,151 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,949 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,155 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,195 |
| Countries with Z | 0 | - | 4.98 | 289,738 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,464 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,354 |
| Flags of North and South America | 0 | - | 4.99 | 371,802 |
| EU Countries Quiz | 0 | - | 4.99 | 272,797 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,922 |
| Countries that Border China | 0 | - | 4.96 | 262,828 |
| French-Speaking Countries | 0 | - | 4.85 | 270,169 |
| Countries with Five Letters | 0 | - | 4.96 | 279,849 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,935 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,365 |
| Every Country Shape | 0 | - | 5.00 | 463,598 |
| Europe Capital to Country | 0 | - | 4.99 | 249,521 |
| Longest International Borders | 0 | - | 4.99 | 264,612 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,783 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,942 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,721 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,033 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,647 |
| Megacities on a World Map | 0 | - | 4.98 | 253,245 |
| World Currency Quiz | 0 | - | 4.91 | 301,834 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,443 |
| NATO Countries | 0 | - | 4.98 | 279,168 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,620 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,702 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,218 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,517 |
| Official Cities in the UK | 0 | - | 4.89 | 282,977 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,522 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,781 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,587 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,676 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,704 |
| Countries with Megacities | 0 | - | 4.99 | 257,570 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,977 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,395 |
| World Capitals by Map | 0 | - | 5.00 | 285,537 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,479 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,577 |
| World's Busiest Airports | 0 | - | 4.96 | 232,293 |
| Country Chain | 0 | - | 4.96 | 216,779 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,860 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,084 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,623 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,120 |
| Independence from Whom | 0 | - | 4.99 | 211,243 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,724 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,357 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,277 |
| Countries with Six Letters | 0 | - | 4.94 | 212,421 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,562 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,023 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,010 |
| Flags of Oceania | 0 | - | 5.00 | 258,112 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,833 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,086 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,466 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,006 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,890 |
| Countries in their Native Language | 0 | - | 4.99 | 198,132 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,682 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,801 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,887 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,185 |
| Monarchies of the World | 0 | - | 4.94 | 168,203 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,688 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,753 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,305 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,747 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,612 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,499 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,620 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,022 |
| Countries That End in Y | 0 | - | 4.90 | 185,637 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,883 |
| Olympic Host Countries | 0 | - | 4.98 | 200,314 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,263 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,344 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,756 |
| Every European Country Shape | 0 | - | 4.96 | 201,273 |
| Countries of the Middle East | 0 | - | 4.96 | 200,711 |
| Countries by Official Language | 0 | - | 4.95 | 194,585 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,767 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,128 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,203 |
| Counties of Ireland | 0 | - | 4.92 | 194,605 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,529 |
| Countries Bordering India | 0 | - | 4.98 | 163,313 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,070 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,757 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,673 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,391 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,733 |
| European Cities by Clue | 0 | - | 4.70 | 88,998 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,114 |
| Islands by Country #2 | 0 | - | 4.80 | 77,312 |
