Recent hotfixes (v1.1.01) have refined world-saving and added in-game voice chat.
The gold standard. Grab the full version of Raft on Steam to get the 1.08 hotfixes and every update since.
Don't risk your PC on sketchy "free download" sites. Stick to the trusted sources where the game stays updated automatically:
If you're on Android, look for Raft Survival: Ocean Nomad for a similar high-seas experience on the go.