A different kind of run and jump
Think of Zoo Keeper's worlds as miniature planets, and then the puzzles will make a bit more sense. Because what you will be doing is running circles outside these parallelepiped structures. While you touch the ground, the inside space (inhabited by baddies and by a number of other thingies, mostly powerups) will become filled with bricks. As you brick it all up from inside out, you progress the level, and when you've covered sufficient space inside the space, and collected the powerups and killed the monsters, you will move on to a next puzzle. Also, you need to consider the threats outside the dome, the baddies that hunt you. You can escape these by jumping or by hitting them or shooting, if you've collected the right powerup. Graphically, it looks like a weird version of Super Mario Bros. but once you understand where the game is coming from (experimental puzzler/run and jump) it will sort of sink in with you. At any rate, the fun is only so long lived, as soon enough the lack of variety will play its toll on you. But, sure, if you've become tired of these modern indie games acting like they've invented wackiness, this mid 90s title will show you that creativity and thinking outside the box (sic!) was something that isn't that recent, actually
