Harvest Masive Encounter
 

I wish to ask about crack, fix or something like that, to this game.

Never heard of it.

http://www.oxeyegames.com/harvest/

Seems it can be downloaded or orderd on CD, but what protection does it use?

Ahhh march 5th release date, just outside rule 6 there :P

But it seems via the forums that there is no protection just serial.

I thought about cracking like in 3D sexvilla game, or symilar.

Just order the download version, you won't need any crack then as there's no disc to check for!