A-OK Wings Of Mercury - Re-Creating The First US Rockets
A-OK Wings Of Mercury bills itself as an educational recreation of the Mercury missions allowing you to flip all the cockpit switches to your hearts content, or at least until you kill your virtual pilot. This is just the demo which lets you perform sub orbital flights on the Redstone booster, but the full version includes the Atlas launcher, orbital missions and the ability to network multiple players who can play mission control.
It's produced by by Apogee Development and is available from their site:
http://www.aokwom.com/
The Mercury Capsule mock up is one of the exhibits at the Chabot Space Science Center - it is a 1:1 copy, although many parents on the fiel trip though it was 'kid sized'.
http://www.chabotspace.org/
(Yes I know I said 'first astronauts' but to be fair, Gagarin and Titov were called 'Cosmonauts')