| Island Countries | 0 | - | 4.99 | 709,578 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,042 |
| European Countries by Clue | 0 | - | 4.92 | 183,454 |
| Countries by Military Spending | 0 | - | 4.93 | 177,324 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,740 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,306,411 |
| US States Quiz | 0 | - | 5.00 | 16,826,695 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,162 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,367 |
| World Capitals Quiz | 0 | - | 5.00 | 5,061,444 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,595 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,164 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,809 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,534,159 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,440 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,344 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,317 |
| All Country Flags of the World | 0 | - | 5.00 | 3,646,492 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,719 |
| Countries that Start with B | 0 | - | 4.95 | 2,290,253 |
| Countries that Start with A | 0 | - | 4.98 | 2,158,220 |
| Countries of Africa | 0 | - | 5.00 | 2,529,144 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,335 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,686,106 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,050 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,661 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,658 |
| Countries that Start with S | 0 | - | 4.98 | 1,751,933 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,717 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,139 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,187 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,060 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,253 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,426 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,872 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,417 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,807 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,007 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,621 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,375 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,493 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,460 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,557 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,308 |
| Random Country to Capital | 0 | - | 4.98 | 917,835 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,243 |
| Biggest Cities in the United States | 0 | - | 4.93 | 975,100 |
| Asia Map Quiz | 0 | - | 4.99 | 914,193 |
| Countries that Start with U | 0 | - | 4.97 | 903,166 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,322 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,179 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,417 |
| Counties of England | 0 | - | 4.97 | 794,547 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,031 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,346 |
| Top World Languages | 0 | - | 4.92 | 819,776 |
| Countries of South America | 0 | - | 5.00 | 922,394 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,547 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,788 |
| Countries that Start with K | 0 | - | 4.97 | 813,737 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,960 |
| US States with an Empty Map | 0 | - | 5.00 | 623,121 |
| Countries that Start with V | 0 | - | 4.98 | 608,239 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,318 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,340 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,212 |
| Countries that Start with D | 0 | - | 4.96 | 707,252 |
| Countries That Border Russia | 0 | - | 4.98 | 461,023 |
| One Border Countries | 0 | - | 4.98 | 467,473 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,249 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,290 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,885 |
| Countries with Four Letters | 0 | - | 4.99 | 421,388 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,788 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,771 |
| Countries Bordering France | 0 | - | 4.83 | 401,800 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,583 |
| Northernmost Countries | 0 | - | 4.99 | 360,279 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,886 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,486 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,537 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,537 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,996 |
| Landlocked Countries | 0 | - | 4.99 | 418,432 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,419 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,868 |
| Australia Map Quiz | 0 | - | 4.95 | 343,766 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,436 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,314 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,998 |
| Countries that Start with H | 0 | - | 4.96 | 602,780 |
| Countries that Start with J | 0 | - | 4.98 | 600,626 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,531 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,560 |
| "Land" Countries | 0 | - | 4.98 | 335,699 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,207 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.54 | 289,738 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,109 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,528 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,186 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,000 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,910 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,138 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,112 |
| Countries with Z | 0 | - | 4.98 | 289,720 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,438 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,324 |
| Flags of North and South America | 0 | - | 4.99 | 371,745 |
| EU Countries Quiz | 0 | - | 4.99 | 272,718 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,892 |
| Countries that Border China | 0 | - | 4.96 | 262,807 |
| French-Speaking Countries | 0 | - | 4.85 | 270,146 |
| Countries with Five Letters | 0 | - | 4.96 | 279,712 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,924 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,315 |
| Every Country Shape | 0 | - | 5.00 | 463,491 |
| Europe Capital to Country | 0 | - | 4.99 | 249,484 |
| Longest International Borders | 0 | - | 4.99 | 264,591 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,712 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,925 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,618 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,008 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,634 |
| Megacities on a World Map | 0 | - | 4.98 | 253,188 |
| World Currency Quiz | 0 | - | 4.91 | 301,763 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,422 |
| NATO Countries | 0 | - | 4.98 | 279,121 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,610 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,671 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,194 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,499 |
| Official Cities in the UK | 0 | - | 4.89 | 282,926 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,482 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,767 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,566 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,655 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,692 |
| Countries with Megacities | 0 | - | 4.99 | 256,582 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,959 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,361 |
| World Capitals by Map | 0 | - | 5.00 | 285,491 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,472 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,560 |
| World's Busiest Airports | 0 | - | 4.96 | 232,209 |
| Country Chain | 0 | - | 4.96 | 216,765 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,799 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,021 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,606 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,102 |
| Independence from Whom | 0 | - | 4.99 | 211,221 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,707 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,338 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,262 |
| Countries with Six Letters | 0 | - | 4.94 | 212,398 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,554 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,014 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,982 |
| Flags of Oceania | 0 | - | 5.00 | 258,059 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,800 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,072 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,455 |
| Countries Closest to Canada | 0 | - | 4.91 | 197,993 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,851 |
| Countries in their Native Language | 0 | - | 4.99 | 198,118 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,674 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,771 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,874 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,177 |
| Monarchies of the World | 0 | - | 4.94 | 168,168 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,673 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,738 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,294 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,655 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,585 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,489 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,609 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,973 |
| Countries That End in Y | 0 | - | 4.90 | 185,632 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,828 |
| Olympic Host Countries | 0 | - | 4.98 | 200,273 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,234 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,328 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,746 |
| Every European Country Shape | 0 | - | 4.96 | 201,253 |
| Countries of the Middle East | 0 | - | 4.96 | 200,688 |
| Countries by Official Language | 0 | - | 4.95 | 194,570 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,758 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,107 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,191 |
| Counties of Ireland | 0 | - | 4.92 | 194,573 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,518 |
| Countries Bordering India | 0 | - | 4.98 | 163,308 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,063 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,667 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,383 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,727 |
| European Cities by Clue | 0 | - | 4.70 | 88,995 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,112 |
| Islands by Country #2 | 0 | - | 4.80 | 77,302 |
