Initially Robo Miner for PC was made to use the Arrow Keys only. Right at the start of Robo Miner being released on Steam for Windows PCs Players said, they would like to play the games with the WASD Keys also.
Upon that an update was released so now players can either use standard Arrow Keys or just use the WASD Keys to move the robot.
There is still no proper keyb mapping in the game, this may be added with a later update.
Hopefully, the WASD Support will be in the favour of some players and make them a better Robo Mining Epxerience.