Saetta said:

today I moved to the new engine. I use a MAC and Opera updated to the latest version. the game takes a long time to load but once loaded appears the window 'download app Plarium etc.' and crashes. no longer accepts any command to exit this window. I tried many times. then I got the access data of a city of a friend who was already playing with the new engine and I loaded it: it's slow but it works! I went out, I reloaded my city: again always crash at the same initial window.

Hello! Please try using Chrome instead of Opera and let me know about the outcome.

Our developers are working on the version for Mac OS. Follow up the in-game news.

Chrome, Opera Vivaldi all lock in the same way, at the first window of the game, while all three work with a small city. my opinion is that my 8 gig of memory is not enough with the new engine that needs an exaggerated amount of memory. I hope that with the app work but in the meantime I can not enter the game for days

Please refer to this thread to learn more about the platform migration. There you will find the list of requirements for the game. 

Also, please clarify if you receive any error messages when the game crashes. if you do, please attach them to your reply.