It's unfortunate that Mac support has dropped. PortingTeam user csb06 has you covered. If anyone is interested in downloading a Wineskin wrapper that v1.05 can be installed into please follow the link below.
http://portingteam.com/files/file/8337-raft-v105/
Cheers! And have fun!
*EDIT - It should be mentioned that this wrapper only supports the 32bit version.