Are these RPGs or what? They sound intriguing, and I am always looking for new ways to waste time.

(Except for PuppetShow, because puppets scare me. It's a doll/clown/puppet thing.)

They're like I Spy mixed with simple puzzles mixed with a very basic type of adventure game (i.e. picking up inventory items and using them in other places). I think some or all of them have trial versions that you can install for free, so you can try them out and see if you like them. Timebuilders is a strategy game, and Nightmare Adventures has no I Spy elements, but the rest of them fit into the above description.

Yeah, I would definitely avoid PuppetShow. :P