Fantastic! That's really reassuring to hear. I will indeed pass on my praise for the game (and have done so already). I'll collate the crashes after a period of playing (i.e. on Monday) and ship them over to you. If there's more information you'd like, do let me know -- I know what it's like debugging.
I'll test the game on other machines I've got access to, namely mac pros with GT8800, 680 GTX and the HD9600 -- at least one of these has a case-sensitive filesystem, so installing Steam is a right pain in the arse. The game does indeed saturate one core (plus a little bit of steam-related overhead), and I'm sure that you're right about just running out of vram. You might be able to use
NSApplication:: applicationDidChangeOcclusionState to see if the renderer's window is offscreen, and throttle it if so (although that build requires Mavericks).
Thanks for the great work -- as I said, I'm really enjoying the game!
