Microsoft will be adding Splinter Cell: Chaos Theory and Metal Arms: Glitch in the System to Xbox Originals next Monday.
You can download them on 21st April for 1200 Microsoft Points (GBP 10.20 / EUR 14.40) a pop.
Kristan really rather liked Metal Arms when it came out in 2003, saying it deserved much more attention than it went on to command. You play as a gun-slinging robot called Glitch in a frantic third-person blaster that is a bit like Ratchet & Clank overdosed on human growth hormone.
Splinter Cell: Chaos Theory, on the other hand, is the 2005 instalment in the popular sneaky spy series. Kristan reckoned it wasn't the best of the Sam Fisher outings, which seemed to spark a rather hefty reaction from you.
Pop over to the official Xbox Originals page for a full list of back catalogue additions and how to download them.