Lemmings

Screenshots:

Background:
Lemmings in this game are mindless creatures that just carry on walking until told otherwise, even if it means they fall to their deaths or meet a grizzly end! Your challenge is to guide the Lemmings to a marked exit by building bridges, climbing walls, mining through rock, even blowing Lemmings up and more besides. One of the those simple but very addicting games.

Gameplay:
The game is viewed from a side-on perspective. You need to move your cursor over the ability you want to give your Lemmings, select it and then move the cursor over the Lemming you want to have that ability and click on them. Some materials such as metal can't be dug or bashed through and some have arrows pointing in a certain direction meaning you can only bash through it in one way, often the opposite way to the way you want to go.