Game is buggy. Sometimes I can get inside a block (my character is on a block). If I press joystick one way and press button I can smash the block, however if I do joystick in another direction with button my character disappears.. turns out he was off screen to the right! I could see him just a little bit, but there's no way to get back on the screen. Just have to wait until air disappears or reset.
Other than that it's good and runs just fine. No lag issues on my home computer, or my S20 Ultra phone.