Hi! If you subscribe for two months, you'll receive a Steam key when the game officially launches, even if you decide not to subscribe anymore. To keep up with game builds in development, you should subscribe.
Yeah, my question was due to the fact i'm not positive i can sustain monthly payments on the long term, so i was wondering if you had any one-time payment options that i could instead go for.
But if you don't have that, i'll try to plan ahead and go for the subscription, although like i said i'm not sure for how long