I think it is the author of the game, they've posted elsewhere before with "I'm 13 and this is my first game" so it seems plausible they'd do the same (mention age) here. Not sure what someone would stand to gain from lying about someone else's game?
It is spam. This is a community site. You've made an account and within the first hour started promoting yourself without engaging in the community as a whole. The only reason you posted was to get hits. Ergo, spam.
Looking through your submissions the only submission you've had is for your game. The only thread you've participated in any discussion in is this one. You deliberately used your age as linkbait.
Try interacting with the community in a genuine way first before promoting yourself and I won't accuse you of spamming or being a spammer.