The current logo in use can be seen here:
http://www.wargamestore.com
Although I have outlined preferences for colour and style I'd love to see original ideas that might totally ignore them!
I like the idea of a wartorn, battered looking design. The strapline and bomb won't necessarily be part of the new design so don't be constrained by them.
WarGameStore doesn't have a bricks and mortar shop so I guess the .com should stay, but maybe a smaller font than WarGameStore? One thing I do think is needed is to make the 3 distinct words stand out. At the moment this is done by capitalising WGS but again you might have other ideas.
WarGameStore is a registered trademark and the "R" logo should be included in the design.
Remember that although the logo may end up on Tshirts it is primarily a website logo. I have a mild preference for the finished design to be a similar width to height ratio as the current one to avoid making the website header to big.
I don't want any of the above to stop you from submitting a creative design that you think will work, so feel free to ignore all the above as a different original design might completely change what I think I want.