Post game on Reddit with gameplay teasers, trailers, and some screenshots on r/gaming, r/Unity3D, r/games.
Post game on various discord channels. ISNS for instance.
Post game Facebook game group based on connections
Fuel Your Hamster!! is free to play. However to generate revenue, it will have:
Integrate some ad networks and see which generates the best revenue. Some famous ad networks: Vungle, AppLovin, UnityAds, Facebook, AdColony, Chartboost.
In game ad activities:
Put ad banner at the bottom of the screen.
Play ad video at the end of each run.
Offer ad video watching when player die to continue playing
Offer one time purchase ad removing at the price of $1.99
Offer one time x2 money collection applies for every run at the price of $1.99