| Island Countries | 0 | - | 4.99 | 711,212 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,975 |
| European Countries by Clue | 0 | - | 4.92 | 183,863 |
| Countries by Military Spending | 0 | - | 4.93 | 178,459 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,364 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,621,387 |
| US States Quiz | 0 | - | 5.00 | 16,925,344 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,635,321 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,161 |
| World Capitals Quiz | 0 | - | 5.00 | 5,086,319 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,889 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,692 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,900 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,563 |
| Random Capital to Country | 0 | - | 4.99 | 2,595,339 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,334 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,413 |
| All Country Flags of the World | 0 | - | 5.00 | 3,683,412 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,106,308 |
| Countries that Start with B | 0 | - | 4.95 | 2,298,868 |
| Countries that Start with A | 0 | - | 4.98 | 2,167,550 |
| Countries of Africa | 0 | - | 5.00 | 2,546,375 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,890 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,693,445 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,113 |
| Countries that Start with C | 0 | - | 4.96 | 1,825,670 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,071 |
| Countries that Start with S | 0 | - | 4.98 | 1,758,090 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,964 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,773 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,829 |
| Countries that Start with G | 0 | - | 4.97 | 1,506,452 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,256 |
| Countries that Start with E | 0 | - | 4.95 | 1,380,218 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,261 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,060 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,692 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,446 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,471 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,557 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,090 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,453 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,013 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,218 |
| Random Country to Capital | 0 | - | 4.98 | 923,267 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,594 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,689 |
| Asia Map Quiz | 0 | - | 4.99 | 920,136 |
| Countries that Start with U | 0 | - | 4.97 | 905,889 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,805 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,337 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,587 |
| Counties of England | 0 | - | 4.97 | 799,339 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,990 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,703 |
| Top World Languages | 0 | - | 4.92 | 824,992 |
| Countries of South America | 0 | - | 5.00 | 928,038 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,155 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,112 |
| Countries that Start with K | 0 | - | 4.97 | 817,713 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,312 |
| US States with an Empty Map | 0 | - | 5.00 | 626,218 |
| Countries that Start with V | 0 | - | 4.98 | 610,328 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,047 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,458 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,275 |
| Countries that Start with D | 0 | - | 4.96 | 712,235 |
| Countries That Border Russia | 0 | - | 4.98 | 462,964 |
| One Border Countries | 0 | - | 4.98 | 470,131 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,475 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,872 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,654 |
| Countries with Four Letters | 0 | - | 4.99 | 423,555 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,270 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,691 |
| Countries Bordering France | 0 | - | 4.83 | 403,678 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,170 |
| Northernmost Countries | 0 | - | 4.99 | 362,203 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,173 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,647 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,803 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,871 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,289 |
| Landlocked Countries | 0 | - | 4.99 | 422,472 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,300 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,096 |
| Australia Map Quiz | 0 | - | 4.95 | 345,299 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,913 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,990 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,808 |
| Countries that Start with H | 0 | - | 4.96 | 606,573 |
| Countries that Start with J | 0 | - | 4.98 | 604,155 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,328 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,057 |
| "Land" Countries | 0 | - | 4.98 | 337,476 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,382 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,517 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,907 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,518 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,184 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,588 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,555 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,749 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,835 |
| Countries with Z | 0 | - | 4.98 | 291,579 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,508 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,311 |
| Flags of North and South America | 0 | - | 4.99 | 374,564 |
| EU Countries Quiz | 0 | - | 4.99 | 275,789 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,135 |
| Countries that Border China | 0 | - | 4.96 | 263,616 |
| French-Speaking Countries | 0 | - | 4.85 | 270,970 |
| Countries with Five Letters | 0 | - | 4.96 | 282,682 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,520 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,559 |
| Every Country Shape | 0 | - | 5.00 | 467,896 |
| Europe Capital to Country | 0 | - | 4.99 | 251,011 |
| Longest International Borders | 0 | - | 4.99 | 265,278 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,739 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,066 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,974 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,942 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,363 |
| Megacities on a World Map | 0 | - | 4.98 | 255,502 |
| World Currency Quiz | 0 | - | 4.92 | 304,467 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,183 |
| NATO Countries | 0 | - | 4.98 | 281,754 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,169 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,888 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,075 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,539 |
| Official Cities in the UK | 0 | - | 4.89 | 284,697 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,590 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,167 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,419 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,463 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,288 |
| Countries with Megacities | 0 | - | 4.99 | 264,895 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,870 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,425 |
| World Capitals by Map | 0 | - | 5.00 | 287,625 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,939 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,525 |
| World's Busiest Airports | 0 | - | 4.96 | 235,206 |
| Country Chain | 0 | - | 4.96 | 217,711 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,983 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,976 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,425 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,114 |
| Independence from Whom | 0 | - | 4.99 | 212,225 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,832 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,280 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,692 |
| Countries with Six Letters | 0 | - | 4.94 | 213,662 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,946 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,426 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,125 |
| Flags of Oceania | 0 | - | 5.00 | 260,749 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,928 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,777 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,888 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,634 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,982 |
| Countries in their Native Language | 0 | - | 4.99 | 199,139 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,399 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,863 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,581 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,990 |
| Monarchies of the World | 0 | - | 4.94 | 169,351 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,769 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,841 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,007 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,604 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,735 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,967 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,164 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,723 |
| Countries That End in Y | 0 | - | 4.91 | 185,898 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,878 |
| Olympic Host Countries | 0 | - | 4.98 | 201,189 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,350 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,731 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,245 |
| Every European Country Shape | 0 | - | 4.96 | 202,292 |
| Countries of the Middle East | 0 | - | 4.96 | 201,781 |
| Countries by Official Language | 0 | - | 4.95 | 195,346 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,169 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,713 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,809 |
| Counties of Ireland | 0 | - | 4.92 | 196,160 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,217 |
| Countries Bordering India | 0 | - | 4.98 | 163,587 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,782 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,992 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,196 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,710 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,264 |
| European Cities by Clue | 0 | - | 4.70 | 89,102 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,756 |
| Islands by Country #2 | 0 | - | 4.80 | 77,580 |
