Do you already own these games or are you planning on purchasing them?
It appears the Porting Kit is one of several WINE implementations for macOS. I've never heard of this one before so I cannot say if this implementation is safe or not. The note on their page for FallOut3 mentions it is playable on an M-series Mac, but it is laggy at some points.
I've only read a few things about trying to play older Windows games on Apple Silicon M-series Macs. I know CodeWeavers' CrossOver a special component they created to help play some of these games (this special component has not been pushed upstream to the WINE project AFAIK....I believe it has something to do with translating GPU calls to a form an M-series Mac with their custom & unique GPU can understand). Even so, from what the very limited research I believe many of these games/apps will not have very good performance. After all they are relying on Rosetta to translate the Intel code and WINE to execute the Windows program and some special sauce for the translation of GPU instruction calls. That is a lot of translations where every bit will negatively affect performance of a game which may already have issues when run on a standard Windows PC.
If you already own these games, then it is fine to try to run them to see if they are playable. Codeweavers has been around for over a decade and is safe although it costs money for their implementation (they do provide a free trial period).
If you do not already own these games, then I would suggest passing. Purchase them on a system with proper support (XBox, PlayStation), or a Windows PC which meets or better yet exceeds the Recommend System Requirements.