The above URL is for the Square Enix specials: http://www.gamersgate.com/campaign/71/square-enix-weekend
Van Helsing games: http://www.gamersgate.com/games?prio=relevance&q=helsingdail…
Worms games & other Team 17 titles: http://www.gamersgate.com/campaign/58/team-17-weekend
Deep Silver ( I belive there will be more titles discounted in a day or two, so remember to check back:
http://www.gamersgate.com/campaign/62/deep-silver-exclusive-…
On Steam itself I noticed up to 75% off Focus titles (The newer RPGs, as well as the Wargame series, seems to be the best): http://store.steampowered.com/sale/focusweekend2014?snr=1_4_…
75% off NARUTO SHIPPUDEN: Ultimate Ninja STORM 3 Full Burst (~$15.50 AU currently). And what an awesome title for a game. If name length correlates to game quality, this would be king.
Is the van helsing link working?