I think the platformer aspect is the best part of this game, as it gets harder throughout each "stage" but retains its simple controls. As for the passage of time theme, I think it could have been elaborated on- the significance of his memories, etc. I think you may have tried to cram a bit much in to a little game, and could have focused of the level aspect or the time aspect. The best "philisophical" games you dont wade into, you dive. This game has great potential but could be more concise for its message.