Define “safe”.
Nothing you can create in existence is incapable of being reverse engineered.
IMO, it’s not even worth the effort to try to protect your game from being… whatevered. Because it’s going to happen, and you won’t believe how fast it happens.
- this excludes multiplayer games – obviously your design practices in multiplayer games will protect the games from being messed with by others. If you’re trying to protect your assets or your code from someone else looking at them, there’s not really anything that will do that – you’d be surprised at the number of people who can read machine code. But anyway, once you’ve built something, even if it’s completely novel, and no one else has ever done it before, it becomes much much easier for people to just … re-create it.