The bundle has 12 games some which already have a Steam key. All games have a Desura key.
However, most of the games are on Steam Greenlight so there is the possibility of getting Steam keys later the possibility being you will end up with 12 Desura keys and 12 Steam keys.
Here are the games:
Biglands (Steam)
The ingenious machine (Steam)
Dreaming Sarah (Steam)
Yelaxot (Greenlit)
Cubot (Greenlit)
The interview(Halfway to Greenlit)
Gunworld (Almost Greenlit)
David (Halfway to Greenlit)
Rotieer (Halfway to Greenlit)
One snack please (Halfway to Greenlit)
Bernie needs love (Greenlight)
Spellbind (Greenlight)
Not many big or well known games but some of them are still good fun. Just give it a try - you might have some fun there. ;-)