The laser game is very good, but I finished it the other day. There are 25 levels. I remembered the trick to beat level 17 and I had to cheat to beat level 23 after trying for 2 days to do it on my own. All the other levels I managed to figure out (several with solutions that are not on the cheats page)
Here's a new game that seems to have a repeatable quality to it, as there isn't one set way to solve each level. Magic Pen takes some getting used to, but is very fun.