Yes. “Pokies” is derived from the phrase “poker machines.” Online pokies are the same as online slot machines. The major difference is that one slang is used more in Europe, while the other is more common in Australia and New Zealand. Aussies and New Zealanders often shorten many words.
So, instead of saying poker machines often, they shortened it to the word pokies. So, anywhere you come across both phrases, just know they mean the same thing. Even from the words, you can denote their meanings which are similarly based on how the machines function.