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Get Games has started their Weekend Deal a day early since they have off on Sunday. They’re calling it the Eggsellent Easter Sale. Their posts imply that more deals will be added but so far it appears the Alan Wake titles are 33% off and Operation Flashpoint: Red River is 75% off for 24 hours only.
Alan Wake = $19.99 / £15.49 / €18.79
Alan Wake Collectors’ edition = $23.45 / £17.99 / €23.45
Alan Wake Extras = $6.69 / £4.69 / €6.69
This game uses Steamworks so Steam activation is required for all of the above.
Operation Flashpoint Red River = $3.99 / £3.99 / €3.99
BTW, Get Games has a link for all the games on their site that activate on Steam here.

Thursday 5th April – Friday 6th April
Alan Wake Collector’s Edition
33% off (ends 09.00GMT on 6 April 2012)
Operation Flashpoint Red River
80% off
Friday 6th April – Saturday 7th April
Deus Ex Human Revolution
75% off
Deus Ex Human Revolution Augmented
75% off
Deus Ex Human Revolution Missing Link
75% off
Saturday 7th April – Sunday 8th April
Just Cause 2
80% off
Dirt III
80% off
Sunday 8th April – Monday 9th April
Red Orchestra 2
50% off
Oh awesome. Thanks dude. I think with the exception of Red River all of those activate on Steam.