uchos: Duke, check my edits above.
regarding the DRMs, you could/should check each game page if you intend to go with the direct exe download. Basically they don't 'force' the DRM-free as in the Humble Bundle, so I suppose it's up to what the developers were using in the first place, IIUC.
If otherwise you're using the stores keys, well, it's the usual stuff depending on the store.
Too late, bought it and only Sanctum misses an installer and is steam only :-( Hoped that windows under the game name means we get an installer. All other games have installers.
DukeNukemForever: [ Okay, maybe I should pay 5€ then. What I don't like so far that there is no detailed information about drm for each game.
Edit: And yes, 4€ was the magic sum. 3,50€ (~ 5$) wasn't enough.
dyscode: Since I did not have any of those game €5 seemed to be the minimum fairness to me.
There is no DRM mentioned besides Steam and Desura. Since you only get serial for these two plus the bare setup.exe files with no other additional serials.
I have not installed them all but things lookin`good.
I'm normally not a penny pincher, especially regarding indie bundles, but in this case I was only interested in Sanctum and the missing detailed informations about drm made me a little bit careful. I don't like client systems like steam or desura and love bundles mostly for having installers. In this case I payed 4€ for two games I'm not really interested in and another copy of Gemini Rue. Maybe it's bad charma as a result for being a penny pincher or a good decision to be careful, that depends mostly on the point if view ;-)