What's the biggest name game to go free for a promotion?

[Primoz]

Originally Posted by DannyTheElite

1-bit ninja...

I spent 1.99

So did I, but it was totally worth it.

[Exact-Psience]

Originally Posted by crex

In terms of popularity, I'd have to say AB Seasons as well as Tilt to Live, but in terms of gameplay it'd come down to Aralon, Galaxy on Fire 2, and The Bard's Tale. Some notable freebies go to Asphalt 7 and Space Miner.

This pretty much summed it up. Oh and MAMC went free a while back too.