| Island Countries | 0 | - | 4.99 | 710,882 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,708 |
| European Countries by Clue | 0 | - | 4.92 | 183,759 |
| Countries by Military Spending | 0 | - | 4.93 | 178,268 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,954 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,547,634 |
| US States Quiz | 0 | - | 5.00 | 16,903,515 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,629,837 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,096 |
| World Capitals Quiz | 0 | - | 5.00 | 5,080,694 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,209 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,833,122 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,560 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,077 |
| Random Capital to Country | 0 | - | 4.99 | 2,593,537 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,517 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,522 |
| All Country Flags of the World | 0 | - | 5.00 | 3,674,791 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,104,253 |
| Countries that Start with B | 0 | - | 4.95 | 2,296,850 |
| Countries that Start with A | 0 | - | 4.98 | 2,165,332 |
| Countries of Africa | 0 | - | 5.00 | 2,542,200 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,185 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,691,784 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,070 |
| Countries that Start with C | 0 | - | 4.96 | 1,824,052 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,155 |
| Countries that Start with S | 0 | - | 4.98 | 1,756,674 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,430 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,425 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,819 |
| Countries that Start with G | 0 | - | 4.97 | 1,505,084 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,102 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,813 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,115 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,725 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,610 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,423 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,291 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,851 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,003 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,246,991 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,993 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,806 |
| Random Country to Capital | 0 | - | 4.98 | 922,062 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,836 |
| Biggest Cities in the United States | 0 | - | 4.94 | 980,235 |
| Asia Map Quiz | 0 | - | 4.99 | 918,545 |
| Countries that Start with U | 0 | - | 4.97 | 905,307 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,066 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,953 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,102 |
| Counties of England | 0 | - | 4.97 | 798,199 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,247 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,373 |
| Top World Languages | 0 | - | 4.92 | 823,643 |
| Countries of South America | 0 | - | 5.00 | 926,702 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,021 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,175 |
| Countries that Start with K | 0 | - | 4.97 | 816,886 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,958 |
| US States with an Empty Map | 0 | - | 5.00 | 625,538 |
| Countries that Start with V | 0 | - | 4.98 | 609,892 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,414 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,296 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,212 |
| Countries that Start with D | 0 | - | 4.96 | 711,078 |
| Countries That Border Russia | 0 | - | 4.98 | 462,454 |
| One Border Countries | 0 | - | 4.98 | 469,620 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,217 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,172 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,940 |
| Countries with Four Letters | 0 | - | 4.99 | 423,091 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,918 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,335 |
| Countries Bordering France | 0 | - | 4.83 | 403,195 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,799 |
| Northernmost Countries | 0 | - | 4.99 | 361,763 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,842 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,381 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,207 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,366 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,014 |
| Landlocked Countries | 0 | - | 4.99 | 421,530 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,719 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,811 |
| Australia Map Quiz | 0 | - | 4.95 | 344,926 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,578 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,408 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,215 |
| Countries that Start with H | 0 | - | 4.96 | 605,774 |
| Countries that Start with J | 0 | - | 4.98 | 603,391 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,887 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,811 |
| "Land" Countries | 0 | - | 4.98 | 337,190 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,174 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 291,264 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,307 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,311 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,973 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,565 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,990 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,599 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,258 |
| Countries with Z | 0 | - | 4.98 | 291,309 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,248 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,089 |
| Flags of North and South America | 0 | - | 4.99 | 373,883 |
| EU Countries Quiz | 0 | - | 4.99 | 275,178 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,834 |
| Countries that Border China | 0 | - | 4.96 | 263,421 |
| French-Speaking Countries | 0 | - | 4.85 | 270,768 |
| Countries with Five Letters | 0 | - | 4.96 | 282,217 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,384 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,074 |
| Every Country Shape | 0 | - | 5.00 | 466,931 |
| Europe Capital to Country | 0 | - | 4.99 | 250,693 |
| Longest International Borders | 0 | - | 4.99 | 265,125 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,071 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,848 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,208 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,688 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,172 |
| Megacities on a World Map | 0 | - | 4.98 | 255,101 |
| World Currency Quiz | 0 | - | 4.92 | 303,847 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,001 |
| NATO Countries | 0 | - | 4.98 | 281,254 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,059 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,630 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,875 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,191 |
| Official Cities in the UK | 0 | - | 4.89 | 284,282 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,367 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,077 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,234 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,259 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,155 |
| Countries with Megacities | 0 | - | 4.99 | 264,287 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,627 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,199 |
| World Capitals by Map | 0 | - | 5.00 | 287,196 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,829 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,368 |
| World's Busiest Airports | 0 | - | 4.96 | 234,490 |
| Country Chain | 0 | - | 4.96 | 217,313 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,691 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,560 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,224 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,937 |
| Independence from Whom | 0 | - | 4.99 | 211,978 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,664 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,867 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,595 |
| Countries with Six Letters | 0 | - | 4.94 | 213,431 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,874 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,355 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,885 |
| Flags of Oceania | 0 | - | 5.00 | 260,076 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,660 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,605 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,779 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,503 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,486 |
| Countries in their Native Language | 0 | - | 4.99 | 198,965 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,236 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,662 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,451 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,830 |
| Monarchies of the World | 0 | - | 4.94 | 169,068 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,600 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,646 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,872 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,445 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,465 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,914 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,022 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,357 |
| Countries That End in Y | 0 | - | 4.91 | 185,843 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,675 |
| Olympic Host Countries | 0 | - | 4.98 | 201,009 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,087 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,604 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,117 |
| Every European Country Shape | 0 | - | 4.96 | 202,069 |
| Countries of the Middle East | 0 | - | 4.96 | 201,506 |
| Countries by Official Language | 0 | - | 4.95 | 195,167 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,060 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,589 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,709 |
| Counties of Ireland | 0 | - | 4.92 | 195,829 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,091 |
| Countries Bordering India | 0 | - | 4.98 | 163,507 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,699 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,937 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,058 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,639 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,127 |
| European Cities by Clue | 0 | - | 4.70 | 89,086 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,225 |
| Islands by Country #2 | 0 | - | 4.80 | 77,504 |
