Gambling is legal in Sweden. For purchasing lottery tickets, playing slot machines, and gambling online, the min age is 18. You can see many forms of gambling in local bars or on ferries in the form of slot machines, or blackjack.
Since only licensed casinos domiciled in Switzerland may offer online gaming services, access to gaming services not licensed in Switzerland by organisers that are domiciled or resident abroad is blocked (Article 86 of the Money Gaming Act).