This week on the Free Apps Roundup: it’s Memorial Day weekend here in the U.S.A., and that means you have extra time to spare on Monday. Good news for you is that there are a ton of great games available for free this weekend. There’s a new Tetris game, there’s the movie tie-in game to EPIC, Angry Birds Space is free, and more. If you don’t find something on this week’s list then you probably just don’t like games. Have fun!

Evernote—one of the more popular note-taking apps available for iOS, Mac and the web—has just been updated with a new feature that will certainly make the app even more useful: Evernote Reminders. With Reminders, you’ll be able to enjoy three features in one: in-app and email alarms, quick note based to-do lists, and the ability to pin notes to the top your note list.

Shazam has updated its app once again, except this time they have completely reworked the experience for the iPad. The music tagging application has a number of new features to ease the tagging process for its users. One of the key features of Shazam for iPad is background auto-tagging, which allows users to use other apps on their iOS devices while Shazam identifies music in the background and saves it in the “My Tags” section of the app.

Mailbox—that cool and hip email app which was released for iPhone—has just been updated to support the iPad. Those who have been hooked on the Mailbox app for iPhone app, which is now under the ownership of Dropbox, are sure to be pleased that there’s now an iPad optimized version.

Hey, remember when card games were played with cards and when video game characters did things? Sorry, what I’m actually trying to say is that Star Trek Rivals, a new collectible card game app, is now available for free as part of the promotional push for Star Trek Into Darkness. Based in the reboot Trek universe, it features over 100 cards based on ships, characters, and monsters.

I’m not one to play much poker, if any. If I’m going to sit around a table with a bunch of dudes and play anything, it’s going to be Risk. Or maybe Star Frontiers. That would change, however, if the dudes were Claptrap from Borderlands, Brock Samson from The Venture Bros., Sam from Sam & Max, and (are you kidding me?!) Ash from Army of Darkness. These are your opponents in Poker Night 2.

Nastume has developed and published some popular family-oriented games for consoles and handheld devices (think Harvest Moon, Rune Factory and Reel Fishing), but at E3 2013 in Los Angeles next month, they’ll be bringing their iOS lineup to the forefront. Amongst the numerous titles on display will be two entries in the Gabrielle’s Ghostly Groove series, a new Reel Fishing game, and a new IP called Ninja Climb.

Fixie Joe works as mechanic in a factory. One night he’s the only employee at work when a storm arrives. Lightning damages the factory, making the robots crazy and they start destroying the machinery. Now it’s up to Fixie Joe to collect nuts and tools to repair the machines and save the factory from disaster.

On Monday, Yahoo announced it had officially acquired microblogging platform Tumblr for approximately $1.1 billion. Soon after the announcement, Tumblr updated its iOS app with a brand new interface and some new features for its users. Posting options can now be viewed vertically instead of the app putting up an overlay and blocking access to the rest of the app.

On Monday, Piper Jaffray analyst Gene Munster reported on Mac and iPod sales and noted that Apple’s iPod sales have slipped 23% in the last quarter and represent only 2% of Apple’s revenue. This means the iPod is no longer what consumers want, and that it may not necessarily be around for many more years. It is no wonder that Apple never bothered to update the iPod Classic line after they added the larger 160 GB model storage option.