puffy on 04 November 2009
If these all release during H1 of 2010 then:
1. Super Mario Galaxy 2
2. Gran Turismo 5
3. Metroid: Other M
4. Red Steel 2
Hmm I only have 4 and Red Steel 2 is on shaky ground, needs to get a meta score in excess of 85 (as of Day 1) to be a day one purchase.