Yup, Its had a bunch of names though.

Operation Neptune, Project Neptune and has also been called by some third name I cannot come up with.

I think there's some other oldie called also Operation Neptune, but that hasnt anything to do with this.

The third name would be Test de Bob Morane: Océan sur Amiga.
Methinks this MegaDrive one might be a good one.

If I may butt it, I'm not doing so hot of guessing any of these, but I'm having a blast going down memory lane with these images. Thanks

Pulse Man!

Drat, was asleep for Operation Neptune and Pulseman. However, here is some Proof to back up the guess of Fuzzyfireball.

Here ya go!

Anvil of Dawn!

Proof: http://www.mobygames.com/game/dos/anvil-of-dawn/screenshots/gameShotId,81473/

Yep :)

Ok, this is just a fragment of a screenshot, to avoid making it too easy (it probably still is)

Looks like Torchlight

Looks like it was too easy after all :)

Feast your eyes

Cosmo's Muthafuckin Cosmic Adventure

Yes sir! Very nice :)

Dun dun dun