The 0.11 demo is probably still up because it is known to be very stable. I haven't encountered any stability problems with 0.12 in recent months, though. The

The 0.11 demo is probably still up because it is known to be very stable. I haven't encountered any stability problems with 0.12 in recent months, though. The big difference is the endgame: 0.11 had a placeholder "Rocket Defense" and 0.12 has a multi-step rocket and satellite assembly process. You would play several hours before encountering this. There are also a lot of performance improvements and quality-of-life things like personal roboports and more detailed logic combinators. I'm looking forward to 0.13 which will have much nicer train track placing, fire that spreads, and maybe new vehicles and chest-loaders.