I remember playing Pikmin in 2001 on the GameCube, back when Nintendo were still doing anything original. You play as a tiny astronaut, and you convince little coloured aliens to follow you around and lift / fight normal-sized (huge by your scale) objects and enemies in the Gulliver's Travels-style world around you. Well, this is exactly that - except that it's on PC and not made by Nintendo (and there's no combat). The whole thing is really polished. It's not hard at all, but it's so well made and engaging exploring the huge rooms of the house. It's split into 5 main levels, one in each room of the house, and each room has a group of insects that you need to help.
The only minor let down was the end of the game. Honestly, I just didn't get it. There's a 5 minute set of dialogue at the end of the game that supposedly explains the whole thing, but it didn't make any sense. Thankfully it has absolutely no impact on gameplay.