Adventure online games are a great way to spend an hour or two online. Whether fighting pirates on the seven seas or obliterating a town of zombies is your thing, adventure games are a great way to escape the drudgery of our everyday lives. But online gaming is not just about escapism; it can actually be a way of learning new skills, developing social skills and puzzle solving. In fact many people consider their online lives even more exciting than their real lives.
While that may be true, it's important not to let your game playing overtake your actual life. It's easy to get cooked up in finishing 'just one more level' or stopping 'just after your fight the boss', and gambling addiction has become a real problem for some people, but if you treat adventure online games as fun hobbies rather than a serious lifestyle then you have nothing to worry about.
Parents also should not be worried, as long as they limit their child's playing time, avoid games where you interact with other online players, and choose age appropriate games (games usually have a rating system based on the content and subject matter included in the game) then it's completely safe to let them play.
Looking for games online can be just a matter of doing a search online. There are many different gaming memberships ranging from free to premium accounts. Usually the more exciting and complex games require a paid membership of some kind. Always make sure you read the fine print so you are aware of exactly your membership entitles you to (how many hours, how many games etc) and make sure there are not any hidden fees of any kind, such as for upgrades or equipment that your character may need). Some gaming memberships pay per game, and others pay per month.
If you are a casual player and just choose to play every so often or a hard core gamer and like to spend a few hours a day online, then as long as you recognize that adventure online games should not take over your real life then it's a great fun way to play.