The answer is: it depends. What device(s) are you using?
Newer Chromebooks support or will support Android apps.
The list of Chromebook devices currently supporting Android is maintained by Google here. Devices not listed here, currently do not support our apps.
As Google is killing Chrome apps for desktop, we prefer to focus on a technology that is going to be supported widely in the future. Supporting our games on many platforms is not easy :)
Note - most of our apps today do not sync progress across multiple devices, so users who choose to switch Chromebook device will lose their progress.
More information about Android for chromebook here