This App makes it possible to play Google Play touch based game without root/hacks/developer options and without Client/Server Apps and requires only a few App Permissions. For this app you need only a small Arduino Board, and you are ready to go!
Manual:
http://2aba.de/apps/manuals/Touch4_Apps_Manual.pdf
Note for Android 9 (Pie): You have to disable the "App Restrictions" for the Touch4... App: Android Settings => Battery => App launch => Touch4... => Disable "Manage automatically"
What you need to play:
- USB Keyboard + USB Mouse (no Bluetooth)
- Arduino Board: Micro or ProMicro or Leonardo or Beetle 32u4 USB Stick
- USB OTG Cable + USB Hub
How to use:
1. Start the App
2. In the Menu select your USB Keyboard, Mouse and Arduino Board
(Arduino Board: Ack USB permissions: click "Ok" quick!)
3. Place the B,X,Y,W (Button, X,Y, Wheel) in the Raster to sync the Mouse Data Bytes
(when you open the app for the first time: Go to "Settings" with the WASD Keys and map the functions: "Menu", "Touch Editor", "Switch Touch/Mouse" and "Switch Mapper Off" with keys. Go back, then close the Menu -> press button: "Menu" Key)
4. Start a game and press the mapped Key for "Menu" on your Keyboard, now you can add some Keyboard and Mouse Touch-Items on the game screen, or load/save/share and download touch settings for each game (if available). Close the menu.
Ready to play.
Notice: This touch mapping app does not require any developer options, also no hacks/root, no SuperSU. It doesn't change the android system. Samsung DeX compatible (in Fullscreen Mode)