The Callisto Protocol for now – unless you want to face the horror of stuttering framerates. Hordes of people on Steam are reporting the same issues that Alice Bee did in her review, plonking Callisto’s rating into Mostly Negative. Developers Striking Distance Studios have acknowledged the issue and say they’ll drop a patch later today to fix it, but we’ll see.
They’ve also revealed their post-launch roadmap, so hopefully it’ll run well enough by February for you to enjoy the New Game+ and Hardcore modes.