Allods online - Total Cost €0.00
Peggle Nights - Total Cost €0.00 (Free for signing up to a PopCap passport)
Spellforce Platinum Edition €3.74 (This weeks Steam bargain)
I haven't even mentioned several excellent free flash games I had a look at along the way. The quality of gaming entertainment that can be had on your PC for little or no money at all is bordering on the ridiculous.
By the way I a making a new rule for myself in relation to Steam and other on-line game sales. My new impulse purchase threshold is hereby set at €5. From here on out I will not pay more than this for a game unless I definitely intend playing it within one week of purchase.