uh:) Your post surprised me. I never though that someone may want play these old games on smart watches, because the display is really small:) What games did you try and how they work on this device? Really interesting.
But back to your question. I never tried smart watches, is there any way how to popup virtual keyboard? Or is there back button? Maybe you can try add virtual buttons – “Key widget” on the screen.
Edit : I am going download google wear emulator for test