I like this game. To show our supporting for this game, I think we should visit the project page of this game and click the Google Adsense Advertisement.
More we can do is to purchase the games from SMK software such as Crypt Explorer & Magic Solitaires. Donation is also a good idea but I do not have egold and webmoney account.
I trust is can help the game developer and hope that they will continue to improve this game.