I just found this in the Chromebook Offers:
Asphalt 8: $60 Car Pack
By clicking 'Redeem on Google Play,' you agree to the Google Play terms and conditions. Valid for $60 worth of in-game credit from Gameloft's Asphalt 8 on Google Play. Open to participants who have purchased and activated an eligible Chromebook. Offer ends December 31, 2017. Credits must be redeemed by December 31, 2018. Limit 1 per person. Age restrictions apply. See Google Content Promotion Terms and Google Play Terms for more information. Promoter: Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA
You must first launch and agree to the Play Store terms and conditions in order to redeem this code.
The terms say eligible
Chromebooks but the main page says any
Chromebook, so YMMV.