It’s time for an oldie but goodie! It’s Lemmings! This game was introduced back in the DOS days (1991, very early PC). It has had so many different versions on just about every console. I have it for my Playstation Portable (PSP), but the version I remember best is that old DOS version. You can still download it here: http://www.abandonia.com/en/games/37/Lemmings.html.
Lemmings are a real animal and the story is that they will run off a cliff in mass numbers if they feel threatened enough. This has since been proven to not be true, but it makes for a fun concept for a video game. Your job is to save as many of the little critters as you can by guiding them to a safe door, where Twizzlers or whatever lemmings like to eat, are waiting. However, each level is a bit of a maze. The lemmings can only fall so far before they die. You can assign lemmings a specific role, such as blocker or digger, which will aid in your task. Blockers will prevent a lemming from going a certain direction (and are really cute!) and the diggers will dig. There are others as well.
The early levels are easy, but it does get challenging later on. The graphics still hold up today and there is a soundtrack which gets repetitive. This game didn’t make my top 25, but it sure was fun, anyway.