You've provided a key-value pair where the key is 'Dungeon Fighter Online for apple instal free' and the text contains information about the game Dungeon Fighter Online.

Based on your request, I'll summarize the main points from the text:

* Dungeon Fighter Online is a timeless classic with a strong fan base.

* The game features heavily skill-based combat, excellent PvP structure, and an old-school vibe.

* It has been played by over 500 million players worldwide.

* The game is a 2D side-scrolling action game inspired by classic arcade games like Golden Axe and Double Dragon.

* It can be played on various platforms, including iOS devices.

As for the installation process, you can download Dungeon Fighter Online from the Apple App Store or Google Play Store. Here are the steps to get started:

1. Open the App Store (for iOS devices) or Google Play Store (for Android devices).

2. Search for 'Dungeon Fighter Online'.

3. Click on the game icon and select 'Install' (for iOS devices) or 'Download' (for Android devices).

4. Wait for the download to complete.

5. Launch the game, create an account if you don't have one already, and start playing!

Please note that the game may require a stable internet connection and suitable device specifications for optimal performance.

If you need any further assistance or have questions about installing the game on your Apple device, feel free to ask!