| Island Countries | 0 | - | 4.99 | 709,477 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,001 |
| European Countries by Clue | 0 | - | 4.92 | 183,433 |
| Countries by Military Spending | 0 | - | 4.93 | 177,285 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,658 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,289,425 |
| US States Quiz | 0 | - | 5.00 | 16,821,848 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,612,189 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,447 |
| World Capitals Quiz | 0 | - | 5.00 | 5,060,066 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,563 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,820,316 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,267 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,533,846 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,074 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,752,902 |
| Africa Map Quiz | 0 | - | 5.00 | 2,113,942 |
| All Country Flags of the World | 0 | - | 5.00 | 3,644,406 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,217 |
| Countries that Start with B | 0 | - | 4.95 | 2,289,663 |
| Countries that Start with A | 0 | - | 4.98 | 2,157,663 |
| Countries of Africa | 0 | - | 5.00 | 2,528,426 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,158 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,685,759 |
| South America Map Quiz | 0 | - | 5.00 | 1,546,824 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,225 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,537 |
| Countries that Start with S | 0 | - | 4.98 | 1,751,533 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,398 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,581,656 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,480 |
| Countries that Start with G | 0 | - | 4.97 | 1,499,695 |
| Countries that Start with M | 0 | - | 4.97 | 1,378,915 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,052 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,637 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,359 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,522 |
| Countries that Start with P | 0 | - | 4.94 | 1,213,713 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,345 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,225 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,233 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,238,968 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,286 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,226 |
| Random Country to Capital | 0 | - | 4.98 | 917,372 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,036 |
| Biggest Cities in the United States | 0 | - | 4.93 | 974,770 |
| Asia Map Quiz | 0 | - | 4.99 | 913,923 |
| Countries that Start with U | 0 | - | 4.97 | 902,974 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,964 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,019,888 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,309 |
| Counties of England | 0 | - | 4.97 | 794,308 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,884 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,125 |
| Top World Languages | 0 | - | 4.92 | 819,496 |
| Countries of South America | 0 | - | 5.00 | 922,114 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,343 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,622 |
| Countries that Start with K | 0 | - | 4.97 | 813,502 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,885 |
| US States with an Empty Map | 0 | - | 5.00 | 622,952 |
| Countries that Start with V | 0 | - | 4.98 | 608,080 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,165 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 412,301 |
| Flags of Asia Quiz | 0 | - | 4.99 | 610,969 |
| Countries that Start with D | 0 | - | 4.96 | 706,944 |
| Countries That Border Russia | 0 | - | 4.98 | 460,952 |
| One Border Countries | 0 | - | 4.98 | 467,343 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,180 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,192 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,770 |
| Countries with Four Letters | 0 | - | 4.99 | 421,292 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,707 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,696 |
| Countries Bordering France | 0 | - | 4.83 | 401,732 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,493 |
| Northernmost Countries | 0 | - | 4.99 | 360,185 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,811 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,415 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,491 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,476 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,970 |
| Landlocked Countries | 0 | - | 4.99 | 418,253 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,301 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,812 |
| Australia Map Quiz | 0 | - | 4.95 | 343,706 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,347 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,167 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,876 |
| Countries that Start with H | 0 | - | 4.96 | 602,519 |
| Countries that Start with J | 0 | - | 4.98 | 600,404 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,445 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,483 |
| "Land" Countries | 0 | - | 4.98 | 335,647 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,161 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,583 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,956 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,483 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,136 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,739 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,854 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,112 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 269,942 |
| Countries with Z | 0 | - | 4.98 | 289,666 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,360 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,262 |
| Flags of North and South America | 0 | - | 4.99 | 371,562 |
| EU Countries Quiz | 0 | - | 4.99 | 272,609 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,820 |
| Countries that Border China | 0 | - | 4.96 | 262,770 |
| French-Speaking Countries | 0 | - | 4.85 | 270,105 |
| Countries with Five Letters | 0 | - | 4.96 | 279,279 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,904 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,227 |
| Every Country Shape | 0 | - | 5.00 | 463,284 |
| Europe Capital to Country | 0 | - | 4.99 | 249,428 |
| Longest International Borders | 0 | - | 4.99 | 264,560 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,577 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,879 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,354 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,962 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,606 |
| Megacities on a World Map | 0 | - | 4.98 | 252,989 |
| World Currency Quiz | 0 | - | 4.91 | 301,612 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,376 |
| NATO Countries | 0 | - | 4.98 | 279,004 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,575 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,608 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,162 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,434 |
| Official Cities in the UK | 0 | - | 4.89 | 282,828 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,429 |
| Countries with the Highest Life Expectancy | 0 | - | 4.90 | 207,745 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,533 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,632 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,659 |
| Countries with Megacities | 0 | - | 4.99 | 249,986 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,914 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,290 |
| World Capitals by Map | 0 | - | 5.00 | 285,385 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,446 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,517 |
| World's Busiest Airports | 0 | - | 4.96 | 231,980 |
| Country Chain | 0 | - | 4.96 | 216,739 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,723 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,964 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,568 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,059 |
| Independence from Whom | 0 | - | 4.99 | 211,186 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,665 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,300 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,240 |
| Countries with Six Letters | 0 | - | 4.94 | 212,336 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,543 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,990 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,930 |
| Flags of Oceania | 0 | - | 5.00 | 257,893 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,726 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,040 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,430 |
| Countries Closest to Canada | 0 | - | 4.91 | 197,961 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,770 |
| Countries in their Native Language | 0 | - | 4.99 | 198,080 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,640 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,736 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,836 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,144 |
| Monarchies of the World | 0 | - | 4.94 | 167,841 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,640 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,676 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,268 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,621 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,525 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,482 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,584 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,909 |
| Countries That End in Y | 0 | - | 4.90 | 185,615 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,468 |
| Olympic Host Countries | 0 | - | 4.98 | 200,211 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,152 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,313 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,716 |
| Every European Country Shape | 0 | - | 4.96 | 201,197 |
| Countries of the Middle East | 0 | - | 4.96 | 200,640 |
| Countries by Official Language | 0 | - | 4.95 | 194,516 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,727 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,065 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,172 |
| Counties of Ireland | 0 | - | 4.92 | 194,482 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,482 |
| Countries Bordering India | 0 | - | 4.98 | 163,292 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,055 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,746 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,645 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,367 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,719 |
| European Cities by Clue | 0 | - | 4.70 | 88,991 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,108 |
| Islands by Country #2 | 0 | - | 4.80 | 77,292 |
