The games that shape you in your childhood tend to linger in your memory long after you finish playing them. I can't open an exploratory game like Gone Home or The Room without thinking of my first stumblings into Myst years before, insisting my dad not leave the room because I was too scared to go alone and too excited to not have someone to talk to.
Playing Space Age stirs a very different set of memories — ones founded in explorative delight, or frenetic frustration from just missing the final piece in a boss fight for the fifth time. They trust the player and tease them, compelling them forward with a great narrative all the while confounding them with dastardly puzzles and note-perfect timing.
It's been a long time since I played a game and failed a mission with a smile on my face and a goofy "aw, rats, I almost had it!" exclamation, but Space Age brings all that out and more.