Nope, you'll need to download the new version when it's updated in the future. The game is not networked... So you have to download the new version to update the game.
你好，这是网站的设定，你需要点击一行小字“No thanks, just take me to the downloads”，作者并没有强制要求付费，当然如果资金条件允许而且喜欢的话多多支持