When Live Arcade launched on the original Xbox, it was a clunky disk-based download service that offered a few dozen games of varying quality. Now, XBLA has become a console-within-a-console, offering unique experiences that can’t be found anywhere else. Below are ten titles that every 360 owner should have in their virtual library, and each can be tried for free on Xbox Live.

#10: Pac-Man: Championship Edition

What would any arcade be without Pac-Man? Released over twenty years after the original, Championship Edition takes the vintage dot-collecting gameplay and slaps a time limit onto it. The dots constantly respawn, and you have to stay alive to rack up as many points as possible before the clock hits zero. With newly redone visuals and catchy techno beats, Pac-Man C.E. is a super addictive revamp that improves the original gameplay and is a great pick-up for anyone out there that still has the Pac-Man Fever.

Price: 800 Microsoft Points/$10

#9: Ikaruga

“Bullet hell”: defined as a game where every pixel of on-screen space is overflowing with things that can kill you. Ikaruga is considered one of the finest examples of this genre: a 2-player top-down spaceship shooter where you can switch the polarity of your craft between darkness and light to match that of your enemies. Shoot the light ships with the dark weaponry to kill them faster, and change your ships color to match the fire coming at you to become immune to it. While the screen is still packed with bullets, being able pass through half of them makes Ikaruga far more playable than its peers and offers a level of strategy that will thrill hardcore fans looking for a challenge.

Price: 800 Microsoft Points/$10