Steam hosts massive Summer sale

Valve has announced a massive summer sale on Steam, discounting titles from every genre and publisher you'd care to mention. More than 170 titles are set to be discounted for the full sale period, which lasts until July 4th, while others are set to come and go in a series of one-day only offers.

Today's offers include some particularly tempting morsels, such as Trine which is 80 percent off for £3.40 GBP at the moment. If you haven't played it then it's something we definitely recommend picking up, but check out the Trine review for more information.

We've listed some other recommended games that are currently on offer below.

RPGs
Sid Meier's Pirates! - 25 percent off, £4.49
Torchlight - 50 percent off, £7.49
King's Bounty: Gold Edition - 50 percent off, £8.74
The Witcher: Enhanced Edition Director's Cut - 66 percent off, £4.41

Action Games
Borderlands - 25 percent off, £14.99
Prince of Persia: The Sands of Time - 33 percent off, £6.02
Beyond Good and Evil - 33 percent off, £3.34
The Chronicles of Riddick: Assault on Dark Athena - 66 percent off, £5.09
Zeno Clash - 50 percent off, £5.62

Strategy Games
Flotilla - 50 percent off, £3.49
Evil Genius - 50 percent off, £3.49
World of Goo - 50 percent off, £8.49
Gratuitous Space Battles - 50 percent off, £8.99

Adventure Games
Machinarium - 50 percent off, £7.49
Indigo Prophecy - 66 percent off, £2.37

Game Packs
Rockstar Collection - 25 percent off, £44.99
Square Enix Eidos Collector's Pack - 25 percent off, £67.49
MDK Combo Pack - 50 percent off, £5.49
Penumbra Collector's Pack - 50 percent off, £8.99
THQ Complete Pack - 50 percent off, £26.49
Telltale Everything Pack - 50 percent off, £34.99
Star Wars Pack - 53 percent off, £52.99
2K Complete Pack - 66 percent off, £69.99
Introversion Complete Pack - 79 percent off, £5.00

You can keep an eye on the one-day Steam sales with the aid of the Steam Bargains forum thread, but in the mean time make sure to tell us what you buy in the forums.