Our new Indie Games subforum is now open for business in G&T. Go and check it out, you might land a code for a free game. If you're developing an indie game and want to post about it, follow these directions. If you don't, he'll break your legs! Hahaha! Seriously though.
Our rules have been updated and given their own forum. Go and look at them! They are nice, and there may be new ones that you didn't know about! Hooray for rules! Hooray for The System! Hooray for Conforming!
I don't think it's truly possible to deeply regret a purchase of physical media: If you're smart and look after your games you can re-sell them on ebay and recoup much of your costs. You have no such recourse with digital downloads because there is no re-sell option, if you don't like a game it can just rot on your HDD or you can delete it and pretend it never happened.
So what misguided digital downloads have you wasted money on? Here are some of mine:
Lumines (XBLA), I didn't like playing Lumines on the big screen as much as I thought I would, it fits better on the PSP and the Xbox d-pad is horrendous. Also no Shinin'.
Sin and Punishment (Wii VC), When I had my N64 this was one of my favourite games but without the ol' three prong controller and that lovely Z trigger it simply controls awfully.
Ragdoll Kung Fu (PSN), What could have been a decent Smash Brothers clone is ruined by waggle controls. To add insult to injury it appeared on the US PSN a few weeks later for free as part of a promotion.
Turtles for the NES (Wii VC), Whyyyyyyyy did I let nostalgia cloud my judgement. This was never a good game!