If you’re looking for a way to get into the holiday season for free, then it could be time to check out the Playrix website. As Casual Friday readers may know, Playrix is famous for its series of match-3/aquarium building Fishdom series of games. Just in time for the holidays, Playrix has announced that browser-based, demo versions of Fishdom: Harvest Splash and Fishdom: Frosty Splash are now online.

It’s really easy to start playing. Just click one of the links above to get to the Thanksgiving-themed Fishdom: Harvest Splash or the Christmas-themed Fishdom: Frosty Splash. Wait for the game to load up in your browser, and then use your mouse to start playing. Both games have brief tutorials to help you learn what you’re doing.

Think of them as demos…

There’s a pretty nice selection of casual games making their debut this week. For probably the first time every in a Casual Friday update, hidden object games don’t completely overwhelm the other genres!

If you’re a Big Fish Game Club member or have a PlayFirst PlayPass, you’ll be a little disappointed this week. Both sites really didn’t have any new games making their debut. A few old favorites were added to those sites though, so there may be some games that are new to you. Some independent game developers are picking up the slack.

There are also quite a few holiday themed games. Notice I said holiday, and not Halloween. There are two Halloween games, Zombie Bowl-O-Rama and The Dracula Files, which is completely natural, given Halloween is only about a week away. However, this week marks the first appearance of a Thanksgiving-themed casual game – Fishdom: Harvest Splash.

This week’s best bets is: Picket Fences (PC)…