A free program for Android, by Samping Pasundan.

This is a transform game of Ultraman Decker using DX Ultra D Flasher. It’s a simulation game that lets you choose from multiple variations of the creature, including the Showa, Heisei, and Reiwa eras. There are multiple single cards that let you choose from a variety of Ultraman heroes. 

The game is designed to be played with the Ultra D Flasher in hand, with the user tapping the card and the Ultra D Flasher transforming into the chosen hero. It’s not a traditional card-based game, but instead, the user is given a card that they can tap and use to transform into their chosen hero.