Section 2: Launching the Emulator
1. Tap the app icon from your Android device's home screen to launch the PS2 ePSXe Emulator Arcade MAME.
2. Main Menu: Upon launching the app, you'll be greeted with the main menu. Here, you'll find options such as Gamepad configuration, BIOS settings, and more.
3. Gamepad Configuration: To play games smoothly, configure the on-screen gamepad by selecting the "Gamepad Configuration" option in the main menu. This will allow you to customize the controls to your preference.

Section 3: Playing PS2 Games
1. Load a ROM: To start playing PS2 games, tap the "Load ROM" option from the main menu. Navigate to the folder where you've stored the ROMs and select the desired game.
2. Adjust Game Settings: Before starting the game, you can fine-tune various settings such as graphics, audio, and controls. Explore the settings menu to find options suited to your device's capabilities and personal preferences.
3. Play: Once the game is loaded, you'll be able to enjoy PS2 gaming right on your Android device! Use the on-screen controls or configure a Bluetooth gamepad for smoother gameplay.

Section 4: Playing Arcade MAME Games
1. Load a ROM: To play arcade MAME games, tap the "Load ROM" option from the main menu once again. Locate the folder where the MAME ROMs are stored and select a game.
2. Adjust Game Settings: Similar to playing PS2 games, you can adjust various game settings like graphics, audio, and controls for the MAME games as well.
3. Play: Once the game is loaded, you'll be transported back to the classic arcade experience! Utilize the on-screen controls or connect a Bluetooth gamepad for a more authentic gaming experience.

Section 5: Tips and Tricks
1. Save Game Progress: The ePSXe emulator allows you to save your game progress whenever you want. Tap the "Save State" button in the pause menu to create a save point, and load it whenever required using the "Load State" option.
2. Gamepad Shortcut: In the ePSXe emulator, you can set up quick keys by pressing and holding the corresponding on-screen button. This function helps in performing complex moves and combos with ease.
3. Frame Skipping: If you experience lag while playing games, try increasing the frame skip value in the settings. This will sacrifice visual smoothness for better performance on lower-end devices.

Conclusion:
With this detailed game walkthrough, you now have all the necessary information to enjoy the PS2 ePSXe Emulator Arcade MAME app to its fullest. Experience the nostalgia of classic PS2 games and relive the excitement of arcade games right on your Android device. Remember to respect copyright laws when downloading ROMs and enjoy the immersive gaming experience provided by this emulator. Happy gaming!