So far I've bought...
1. Halo: CE (never played when I had the original, but once I got my 360 I knew I had to check the series out. bought ODST and the multiplayer sold me on the series. I was planning on buying the game on disk for 10, so I couldn't pass this up.)
2. Splosion Man
3. Trials HD and The Big Pack
4. Portal (bought a few days ago)
And I'm thinking about Greed Corp. I played the demo and can't say it sold me, but I'm thinking spend some time I'll get the hang of it. Also, I have the demo for Turtles waiting, but I'm not sure I'll get it (note I have no co-op partners, maybe parents, but that would be a rare thing). Also, Secret of Monkey Island peaks my interest, but I'm not sure about the "point and click aspect. I have 1200 points left now, and I want to save some for Christmas deals, hoping I won't have to buy more points (I've bought 3200 points in the past three days, though I really only spent 3 dollars for them, thanks to a great deal on some handhelds at a garage sales that netted me some great credit, with a little left over I'm saving up for the 3DS next year), because I'm really wanting to find Limbo on sale.
I think I'll go ahead and get Greed Corp, but is Turtles worth it for a single-player?