Desktop inputs

Four keys, then physics.

The original game is built for keyboard and mouse. There is no inventory, no jump button, and no ability menu. If a match feels hard, it is almost never because you forgot a key.

Action Input
Move W A S D
Steer Mouse
Charge, or restart after exploding Space
Pause Tab

What not to expect

After the keys, read Physics. For a first session walkthrough, use Play.