Game help and default keys for this device are explained in-game.

Pointer Support
===============

To enable playing GNU Robbo on devices with limited input facilities,
the game can be controlled entirely by using a pointing device such as
a stylus. By default the menu items throughout the game can be clicked,
and to activate the in-game control pad and toolbar you should simply
click anywhere on the screen. To shoot use either of these methods :-

* Drag from Robbo to a direction to shoot once and remain in walk mode.
* Click Robbo to toggle shoot mode on, press a direction to shoot one
  or more bullets and then click Robbo again to toggle shoot mode off.


Save Frequency < { On Exit | On Change } >
==========================================

In Options you can choose to save the rcfile (.gnurobborc) whenever
important settings are changed. You may experience a slight delay
whilst the data is being saved and synced (depending on platform,
backup media type, CPU underclocking etc.) but if you are running GNU
Robbo on a battery powered or generally unstable device then you won't
lose your level progress or your modified settings.


Video Mode Selection
====================

Depending on platform, video mode initialisation works thus :-

* A user requested video mode via the commandline is attempted
* If that fails then the default hi-res 640x480 mode is attempted
* If that fails then the default lo-res 320x240 mode is attempted
* If that fails then the program quits

If you are using a device with a portrait orientated screen or you
prefer this orientation then you should pass it via the commandline :-

e.g. ./gnurobbo -600x800
e.g. ./gnurobbo -480x640
e.g. ./gnurobbo -240x320

Additionally you can pass the -vpx option to expand the viewport to
fill the screen vertically by 40%. See Command Line Options below.


Following is the desktop Linux README which you may find interesting.
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