Crazy Machines: The Wacky Contraptions Game Win/Mac
from: Viva Media

I bought this about a year back and I simply love it. Not only me, my 3 year old twins too!!! Of course they cant do much with it, but they simply enjoy looking at me working the puzzles. The physics engine is very good. Some puzzles are not that intriguing, but I think they are there for the newcomer to get used to different machines and gadgets. All in all a great product for the entire family

Features:

• Build imaginative machines in this creative and addictively fun brainteaser
• Turn cranks, rotate gears, pull levers, and more to build unique contraptions
• Solve more than 200 challenging puzzles; put your machines to work
• Physics engine with air-pressure, electricity, gravity, and particle effects
• Experiment with gears, robots, explosives, and more in your own virtual lab

Crazy Machines: The Wacky Contraptions Game Win/Mac

 Left 4 Dead
from: Electronic Arts

Set in a modern day survival-horror universe, the co-operative gameplay of Left 4 Dead (L4D) casts four "Survivors" in an epic struggle against hordes of swarming zombies and terrifying "Boss Infected" mutants. Developed by Turtle Rock Studios and Valve, creators of the Counter-Strike and Half-Life games, the latest AI technology allows for multiplayer games of one to eight players.

A new and highly virulent strain of the rabies virus emerges and spreads through the human population with frightening speed. The pandemic's victims become grotesquely disfigured widely violent psychopaths, attacking the uninfected on sight. As one of the "lucky" few apparently immune to the sickness, you, unfortunately, are also trapped in a city crawling with thousands of the bloodthirsty Infected. Alone, you're dead. But together with a handful of fellow survivors, you might just fight your way to safety.

Players can play as a Survivor or as one of four types of Boss Infected, each of whom possess a unique mutant ability, such as a 50-foot tongue lasso or a giant belly full of explosive methane gas. The gameplay of L4D is set across four massive campaigns. The zombie population of each mission is choreographed by an AI Director that monitors the human players' actions and creates a unique and dramatic experience for them on the fly.

Left 4 Dead from: Electronic Arts