D3Publisher will be offering six previously UMD-based games on the PSP Store this month.
Puzzle Quest, the excellent PSP blend of puzzle and RPG that we waxed lyrical about back in early April 2007, leads the charge.
The other titles on offer will be Dead Head Fred, Cube, WTF: Work Time Fun (!), PQ: Practical Intelligence Quotient and PQ2: Practical Intelligence Quotient 2.
Puzzle Quest costs USD 15. The other prices vary between that and USD 10.
Sony Japan recently announced plans to implement a true PSP Store - which is to say games downloaded direct to the handheld rather than via PC - this autumn.