Xbox Live Arcade tour de force Trials HD has been discounted to 800 Microsoft Points (£6.80/9.60). That's a saving of 400 MSP (£3.40/4.80).
This deal is part of Microsoft's "Thrifty Thursday" idea and lasts only for one day.
You can queue it for download from the Xbox.com website now.
Trials HD was released last year during the Xbox Live Summer of Arcade. Eurogamer loves it long time.