Back in 2004 I linked to the game Grow. I recently looked up the site again and there are a few new versions to enjoy. All basically built on the same principle: select items and depending on the order in which you put them different things happen.
is one of those new games, but you may also not have seen Grow Cube and Grow RPG. Unfortunately Grow3 is no longer available due to lost source code but to make it up the developer created versions 1 and 2.
Some of the new games are fiendishly hard, if you want spoilers you can find them on YouTube but I seriously recommend not doing that unless you're really really frustrated. Just explore and enjoy the possibilities.