itch.io

Stupid question, there is most likely an answer in this post, or somewhere, but I am too stupid. Does this mean the game is completely playable after buying? Or would I need an api key to play it? I just want to know if I'll need to pay anything, to the game or outside sources to be able to play.  

i know this game has already been out for a few years now, but i truly loved this game, its a shame that this creator doesnt seem to have any more projects going on, from what i know atlest, this game was really good, and i wish i could of played more

i love this game, and cannot wait for more, i've already fell in love with this game even though i just finished it all 

is this game going to get any more future updates, this game is really good and i wish there was more, its so good but pretty short