First of all, there's Ms. Pac Man. This is one of the best games that you can play online. It is so easy to control and so fun, but also very challenging. The reason Ms. Pac Man is a little more fun than the traditional Pac Man game is that it actually changes colors and has a wider variety of fruits and foods to collect. It still has all your favorite elements, though, that you remember from Pac Man: the ghosts, the pellets you eat, the secret passages on the sides, and the mazes that change from one level to the next.
The next great old school online game you should check out is Donkey Kong! This is another classic arcade game from back in the day. It's a game that has been featured not only in the arcades in the 80's but was also a big hit on several consoles throughout the years. And now you can play it online! It is one of Mario's first appearances in a video game, and that is one of the many aspects that make it fun! The game play itself is classic and enjoyable for all ages, too.
Finally, an old school online game that should not be missed is, speaking of Mario, Super Mario Brothers! This is one of the best games of all time, arguably! Now that you can play this game online, you can take a trip back and enjoy your favorite Italian plumber any time you like!