Radau im Bau

Description
Radau im Bau ("Row in the Building") is a free 2D click-and-point adventure game which advertises German hard plaster-producing companies. It features an inventory and can be controlled via mouse.
Story
The player takes control of Max, a young boy that has just moved into a new apartment building with his parents. The building is an old mansion owned by two old twin ladies. Beside them, several parties live also in there like Hagen, the nephew of the old twins, a yuppie, Mr. Grollheimer, and an artist.
As it soons turns out, the yuppie knows that the owners are in debt and he secretly works together with a bank to buy the house for an apple and egg, get rid of the tenants, pull down the house and build a supermarket.
Max comes across that plan, but his parents don't believe him and with the help of the little house ghost named Knips, he tries to stop this.