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Ace of Spades is on sale for 50% off as the Steam Daily Deal for Thursday, January 24, 2013.
Ace of Spades = $4.99 / £3.49 / €3.99
Ace of Spades 4-Pack = $14.99 / £10.49 / €11.99
It has a 51/100 metascore. Just realized it’s a Jagex game. I remember when I had a top 10 woodcutter in Runescape lol.