Hey Jasoon, I have come across a couple of games billed as deluxe or DX recently. (Confirmation bias?) Does this signify something specific or is it just a term?
In this case, it does! Cloud Bashers DX is the deluxe version of Cloud Bashers. The new version made in 2021, the original in 2017.
Here's the original if you're curious: https://jasoonmargoon.itch.io/cloud-bashers