Big Idea, the makers of two hit video kids series -- Veggie Tales and 3-2-1 Penguins -- has a great selection of free arcade games online.
No fees, no registration required, no popups. The games use Java and Shockwave, so you may need to install plugins for your browser.
Although we have a big collection of Veggie Tales videos, I hadn't known about this site until I saw a link on National Review Online's "The Corner" to this game, which involves using a slingshot to launch someone into a spaceship. Planets form obstacles and also exert gravitational influence on the flight path. You can set up some interesting orbits, which make pretty Spirograph-like designs and gain you extra points. There's a new version of the same concept, called "Doom Funnel Chasers", with some more challenging layouts. In this one, you have to fling a ball of duck tape into a sort of black home.
Other favorites include an enhanced version of Breakout, and Jerry's Cheeseburger Madness, which will look familiar to 1980s arcade fans.
It is all kid-friendly and kid-safe, but lots of fun for grownups too. Check it out.