You have missed your opportunity if you did not get it before. Then again it might be free again soon, so you might get a chance to own a crappy free game if you missed opportunity before. It's free, nothing to loose https://store.steampowered.com/app/44350/GRID_2/ Oh yes, if you want to have Platformer game free giveaway, there is such too: https://store.steampowered.com/app/275390/Guacamelee_Super_Turbo_Championship_Edition/ Get both and you have got 45 euros worth of free games, happy day
I get emails from isthereanydeal.com alerting me when there are free games available. In the past year I have got almost 100 free games, probably over $1000 worth. I hardly play any of them, I just like adding games to my Steam library