Have a look at online casinos which offer players bonuses to play on slots. These are what is commonly referred to as free casino slots and no deposit is required to claim the promotion. When you view the list you make notice that there is several different bonuses some which are just a bit of credits and others giving thousands. Preferred by many is the free slot spins, which then the user will go on to play other games within the casino. You will have the option to download the casino software or game on instant play casinos.