Automation game, build your own engine

[The Doctor]

automationgame.com/

In the free trial, you only get limited cars and engines, but i had hours of fun trying to 'build' 4 cillinder engines
Some pictures i scooped of the net:




If you buy the full version, apparantly you get the straight 6s and V8s as well as turbos to play with

[chairchild]

downloaded, just need to wait for a lull at work when I can get on it now

[Copey]

This will be gettin downloaded when i get home from work! Looks like a fun way to waste a few hours! Haha

[Battles]

Ooft. Don't download this if you have a lot of other stuff to do.
It's a giant time sponge.