The welcome bonus has become sort of synonymous with online gambling. And most online casinos offer at least some sort of deposit bonus to get you started; sometimes they even add a few free spins to spice things up.
That said, this is probably where you'll notice the difference between cryptocurrency and traditional online casinos the most. That's because while you may find a welcome bonus in cryptocurrency, this is not always the case. However, if the casino offers it, in all likelihood, if it also accepts Litecoin as a payment method, you can get your welcome bonus in LTC as well.