There are several ways to earn chips:
1) Play in One on One mode. You win chips in all the rooms except for Invisible and Pro Room.
2) You can get chips with daily free spin in Belmoslot.
In order to use the Belmoslot machine you need to press "Mini Games" button in the Main Lobby. This machine has 100% win rate, however you don't know which prize you'll get. It's all about luck! And by the way: you can roll Belmoslot for free once a day.