Whilst checking out some titles for Tuna Snax (now in open beta, please drop by and help us tweak it!), I came across the new Chromadrome 2. To be honest I wasn't familiar with the first game but I really do love this sequel.
Very much for "real" gamers (err, as opposed to casual) but totally takes me back to my 16 bit and arcade days.
Would love to know of any other indie games that I've missed.