What do you do with coins in Astro bot?
Hey there, I'm curious about something related to Astro bot. Could you please explain to me, in a concise manner, what exactly do you do with the coins you collect in the game? Are they used for unlocking new levels, purchasing upgrades, or are they just a form of virtual currency with no specific purpose? I'm eager to learn more about the mechanics of the game and how the coins fit into the overall gameplay.