If you are an Old School Gamer, there is a good chance you have one or more Castle Oldskull releases. Castle Oldskull has some very solid old-school releases, and this is one hell of a bundle.
The current Castle OldSkull Bundle is originally $139.28, it is on sale with this bundle for 41.58.
For the completist, here it is at last. A colossal selection of over 50 titles from the Castle Oldskull, Hawk & Moor, and Old-School Essentials series!