Well, Skaut Kwatermaster is an adventure game so those who do not know polish language will not have any fun out of it. The game is quite good. It has a stylish graphics based on the concept from Day of the Tentacle. There are nice music modules as well.
Astral is an action game with logical elements. I think that you do not need to know the language to have a good fun from this descent game. You control a man. You need to put all the flashing barrels into place of its destination. You need to avoid opponents who steal (put back) barrel you carry. You may carry only one barrel. There is also wheelbarrow that helps you to transport barrels. Main character can shoot in the opponents with different kinds of bullets.