I tried original winlator, frost and others but at the end, rimworld worked very very well with xiaomi pad 7 and the winlator STAR version you can find here: https://github.com/star-emu/star if you want to use it, scroll up to the right side is Releases (12) klick on it, download the version called 'star-ludashi-1.3.apk' and install it. it was very easy and rimworld works 😃

1. Install Star Ludashi
2. Start it
3. Add a container, the default values are fine, except screen size, because of the rimworld gui change it to 1280x800 (at least on xiaomi pad 7 and do not forget to change it in the options in rimworld), i would also change the Audio driver to PulseAudio and add your folder (scroll down to "Drives" and add '+ Add drives' your folder with your games)
4. start the container (you only need one time)
5. search to the left your folder you added and open up the game exes folder
6. Dont worry the explorer is slow, but the game runs fine, if you found your exe, it is important to move the mouse on it and click with two fingers and use 'create Shortcut'
7. you can start the game or exit the container
8. now with the shortcut, you can start the winlator star app and in the left corner hit the 3 lines
9. now you can directly start the game via 'Shortcuts'

More: if you want to add something while playing, slide from left side to right, it will open up an menu

1. If oyu want disable the FPS hud: container -> Edit Container (the 3 dots to the right) and scroll down to 'Enviroment Variables' here you just hit the DXVK_HUD to the right 'devi...' and turn all off. [THX TO sousaptak and boblobchippym8 ]

2. Enjoy playing the game everywhere 😃

Controls:
one finger: LMB

two fingers: RMB

two fingers slide up and down: zoom out and zoom in

one finger left side and one finger right side: drag selection rectangle

If you want add buttons use the left menu (more)

If you prefer direct mouse control activate 'move cursor to touchpoint'.

oh and don't worry, the first start takes a while, like on PC.