Seems I missed out on last weeks update..

LIVE Activity for week of 2/18 - Top Arcade Titles (Full Versions)
1 N+ (debut)
2 UNO (+3)
3 Rez HD
4 Commanders: Attack (-2)
5 Bomberman LIVE (+3)
6 Chessmaster Live (-2)
7 Poker Smash (-6)
8 TMNT 1989 Arcade (10+)
9 Worms (+1)
10 Marble Blast Ultra (10+)

N+ Debuted very high - scoring #7 on the overall Xbox 360 game chart! UNO's become a little popular again due mostly to Vision Camera bundles being on sale over the week.

LIVE Activity for week of 2/25 - Top Arcade Titles (Full Versions)
1 N+
2 Triggerheart Exelica (debut)
3 Worms (+7)
4 UNO (-1)
5 TMNT 1989 Arcade (+3)
6 Bomberman LIVE (-1)
7 Rez HD (-4)
8 Chessmaster Live (-2)
9 Sonic The Hedgehog 2 (10+)
10 Marble Blast Ultra

N+ still going stong, and STILL sitting in in #7 on the overall top 10. According to Leaderboard estimates - by tomorrow N+ will have sold just over 50,000 copies. Good going Metanet!

Worms made a big leap due to Target in the US having a "Buy 1 get 1 free" with the Bogo cards. Surprisingly Mortal Kombat 3 and Boom Boom Rocket not making a resurgence despite being those to get for free.

Keep buying Rez please!

Source: Major Nelson.