Some quality original content on 3DS and DSi reaches North America this week, with two free demos to pick up as well. Here's what's out this week.

Nintendo 3DS Download Software

Marvel Pinball 3D (Zen Studios, $7.99, 661 blocks) — Take four Marvel-themed tables for a spin in Zen Studios' follow-up to its very good Zen Pinball 3D. We're putting it through its paces and should have a review for you soon.

Bomb Monkey (Renegade Kid, $4.99, 68 blocks) — What do you get when you cross a monkey and a bomb? A baboom. Expect better gameplay than our jokes in this quirky little action puzzler. Read our Bomb Monkey first impressions while we work on our review.

3DS Demos

Rhythm Thief and the Emperor's Treasure (SEGA) — One of the most original titles to hit 3DS yet — though the title probably gives that away — try out SEGA's upcoming title and then read our Rhythm Thief and the Emperor's Treasure review for our verdict.

Kingdom Hearts 3D: Dream Drop Distance (Square Enix) — OK, this actually hit during last week's Nintendo Direct conference, but it's worth reminding you that you can now try Square Enix's upcoming RPG for free.

3DS Weekend Sale

VVVVVV — $4.99 — Get Nicalis' superb version of this mind-bending platform puzzler for $4.99 this weekend. Read our VVVVVV review if you're even slightly on the fence, which you shouldn't be by now.

DSiWare

Escape the Virus: Swarm Survival (Teyon, 200pts, 31 blocks) — Almost exactly like WiiWare game Viral Survival, in this game you have to collect DNA and avoid viruses. We'll have a review soon.

Flip the Core (Engine Software, 200pts, 73 blocks) — A DSiWare shooter with a retro tinge, this could be an intriguing title, and we'll have a full review soon.

Quite a bumper week this week. What will you be buying, if anything? Let us know on our Facebook poll.