Legend says that beneath the surface of Oroborous C, the hollow world, is another planet. Below that planet is another, and another, and below them all. Below them all is a source of untold wealth and power.

Substep is a roguelike shooter played best with a game controller (in fact a controller is almost mandatory). Fight hard enemies, get coin to buy new weapons and ship upgrades, and use your drill-ship to dig as deep as you can into the planet without dying.

The controls are fairly simple:

Arrows/WASD or the Left Analogue Stick to move (movement uses space physics - the trick is to not hold the analogue stick down all the time)

Space Bar or RB to fire your weapon.

When your fuel gauge is over 100%, crash the ship into the planet to dig through to the next level.

Collect coins to spend on new weapons (might I suggest the scatter shot), ship upgrades and repairs.