| Island Countries | 0 | - | 4.99 | 709,041 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,727 |
| European Countries by Clue | 0 | - | 4.92 | 183,313 |
| Countries by Military Spending | 0 | - | 4.93 | 177,056 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,224 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,202,782 |
| US States Quiz | 0 | - | 5.00 | 16,792,496 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,562 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,514 |
| World Capitals Quiz | 0 | - | 5.00 | 5,053,519 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,338 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,684 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,720 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,531,982 |
| Random Capital to Country | 0 | - | 4.99 | 2,585,100 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,395 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,634 |
| All Country Flags of the World | 0 | - | 5.00 | 3,634,451 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,185 |
| Countries that Start with B | 0 | - | 4.95 | 2,287,290 |
| Countries that Start with A | 0 | - | 4.98 | 2,155,141 |
| Countries of Africa | 0 | - | 5.00 | 2,523,449 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,500 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,683,862 |
| South America Map Quiz | 0 | - | 5.00 | 1,545,366 |
| Countries that Start with C | 0 | - | 4.96 | 1,816,285 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,587 |
| Countries that Start with S | 0 | - | 4.98 | 1,749,803 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,718 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,579,089 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,446 |
| Countries that Start with G | 0 | - | 4.97 | 1,497,972 |
| Countries that Start with M | 0 | - | 4.97 | 1,377,580 |
| Countries that Start with E | 0 | - | 4.95 | 1,372,430 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,036 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,038 |
| Countries that Start with I | 0 | - | 4.92 | 1,284,223 |
| Countries that Start with P | 0 | - | 4.94 | 1,212,492 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,951 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,090,140 |
| Countries that Start with N | 0 | - | 4.93 | 1,113,706 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,236,054 |
| Countries that Start with L | 0 | - | 4.98 | 1,086,683 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,740 |
| Random Country to Capital | 0 | - | 4.98 | 915,703 |
| Countries that Start with T | 0 | - | 4.90 | 1,007,089 |
| Biggest Cities in the United States | 0 | - | 4.93 | 972,822 |
| Asia Map Quiz | 0 | - | 4.99 | 911,705 |
| Countries that Start with U | 0 | - | 4.97 | 902,258 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,897 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,018,100 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 731,693 |
| Counties of England | 0 | - | 4.97 | 793,111 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,138 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,031 |
| Top World Languages | 0 | - | 4.92 | 818,063 |
| Countries of South America | 0 | - | 5.00 | 920,393 |
| Africa Capitals Quiz | 0 | - | 4.99 | 734,140 |
| Asia Capitals Quiz | 0 | - | 4.98 | 689,610 |
| Countries that Start with K | 0 | - | 4.97 | 812,481 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,525 |
| US States with an Empty Map | 0 | - | 5.00 | 621,761 |
| Countries that Start with V | 0 | - | 4.98 | 607,420 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,421 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,012 |
| Flags of Asia Quiz | 0 | - | 4.99 | 609,621 |
| Countries that Start with D | 0 | - | 4.96 | 705,617 |
| Countries That Border Russia | 0 | - | 4.98 | 460,526 |
| One Border Countries | 0 | - | 4.98 | 466,718 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,866 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,507 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,142 |
| Countries with Four Letters | 0 | - | 4.99 | 420,644 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,268 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,289 |
| Countries Bordering France | 0 | - | 4.83 | 401,328 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,050 |
| Northernmost Countries | 0 | - | 4.99 | 359,650 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,407 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,043 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,145 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,240 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,748 |
| Landlocked Countries | 0 | - | 4.99 | 417,153 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,755 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,496 |
| Australia Map Quiz | 0 | - | 4.94 | 343,412 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,999 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,629 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,202 |
| Countries that Start with H | 0 | - | 4.96 | 601,350 |
| Countries that Start with J | 0 | - | 4.98 | 599,326 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,948 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,110 |
| "Land" Countries | 0 | - | 4.98 | 335,019 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,010 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 288,854 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,188 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,271 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,837 |
| Flags of Africa Quiz | 0 | - | 5.00 | 467,432 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,500 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,943 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 269,004 |
| Countries with Z | 0 | - | 4.98 | 289,111 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,994 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,023 |
| Flags of North and South America | 0 | - | 4.99 | 370,640 |
| EU Countries Quiz | 0 | - | 4.99 | 271,979 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,489 |
| Countries that Border China | 0 | - | 4.96 | 262,596 |
| French-Speaking Countries | 0 | - | 4.85 | 269,887 |
| Countries with Five Letters | 0 | - | 4.96 | 268,836 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,742 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,631 |
| Every Country Shape | 0 | - | 5.00 | 462,265 |
| Europe Capital to Country | 0 | - | 4.99 | 249,062 |
| Longest International Borders | 0 | - | 4.99 | 264,382 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,740 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,620 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,418 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,731 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,415 |
| Megacities on a World Map | 0 | - | 4.98 | 252,524 |
| World Currency Quiz | 0 | - | 4.92 | 300,879 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,147 |
| NATO Countries | 0 | - | 4.98 | 278,403 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,328 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,254 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,966 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,654 |
| Official Cities in the UK | 0 | - | 4.89 | 282,366 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,084 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,628 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,317 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,398 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,118 |
| Countries with Megacities | 0 | - | 4.99 | 249,354 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,683 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,897 |
| World Capitals by Map | 0 | - | 5.00 | 284,984 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,326 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,333 |
| World's Busiest Airports | 0 | - | 4.96 | 230,331 |
| Country Chain | 0 | - | 4.96 | 216,512 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,406 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,453 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,339 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,568 |
| Independence from Whom | 0 | - | 4.99 | 210,939 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,416 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,120 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,100 |
| Countries with Six Letters | 0 | - | 4.93 | 211,604 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,386 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,808 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,520 |
| Flags of Oceania | 0 | - | 5.00 | 257,273 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,347 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,800 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,324 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,806 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,171 |
| Countries in their Native Language | 0 | - | 4.99 | 197,795 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,247 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,483 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,737 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,943 |
| Monarchies of the World | 0 | - | 4.94 | 167,553 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,250 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,440 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,102 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,485 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,210 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,412 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,413 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,433 |
| Countries That End in Y | 0 | - | 4.90 | 185,490 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,206 |
| Olympic Host Countries | 0 | - | 4.98 | 199,750 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,836 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,211 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,574 |
| Every European Country Shape | 0 | - | 4.96 | 200,957 |
| Countries of the Middle East | 0 | - | 4.96 | 200,001 |
| Countries by Official Language | 0 | - | 4.95 | 194,191 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,602 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,880 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,061 |
| Counties of Ireland | 0 | - | 4.92 | 194,177 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,974 |
| Countries Bordering India | 0 | - | 4.98 | 163,228 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,980 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,674 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,507 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,926 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,656 |
| European Cities by Clue | 0 | - | 4.70 | 88,965 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,081 |
| Islands by Country #2 | 0 | - | 4.80 | 77,231 |
