"ぐんまのやぼう あぺんどじゃぱん" is an educational game developed by RucKyGAMES. Available on Android, this free game aims to provide an interactive and fun way to learn about the different cities and towns in Gunma Prefecture and all 46 prefectures of Japan.

With over 2,000 city and town cards included, players can collect specialty products from each prefecture to earn G (GUNMA) and conquer Japan. The specialty products appear at regular intervals, and the G earned can be used to conquer different prefectures.

Conquering prefectures not only rewards players with card tickets but also unlocks the ability to conquer the same prefecture multiple times. By using card tickets, players can obtain city and town cards, including the post-merger cards that appear after acquiring the pre-merger ones.

In addition to conquering prefectures, players can take a virtual walk with "ぐんまちゃん" to various tourist spots within Gunma Prefecture. As a reward for the walk, players receive "ぐんまちゃんフィギュア" (Gunma-chan figures) to complete their collection.

There are also mini-games available that allow players to earn G and card tickets. As players conquer different areas, more mini-games become accessible.

Overall, "ぐんまのやぼう あぺんどじゃぱん" offers an engaging and educational experience for players to learn about the cities and towns of Gunma Prefecture and Japan as a whole.