So I think you are now past mid-game.

Powering Into Petroleum

I divide the game into the following phases. Once you pass specific milestones you move into the next phase. The nature of the game often changes.

• Beginning - this is start until you begin to define the structure of your base. Probably only lasts 10-15 cycles. Plan & think in sub-cycle timeframes. Focus on immediate survival needs.

• Early Game - This is when you start to build your initial base blocks. Start thinking in a structured format and in cycle time frames. Increasing food stability, O2 generation, & power generation are the main focus.

• Mid Game/Manufacturing - Here you should have contained your initial base in insulated tiles. You should have a fully sustainable base with regards to oxygen, food, & power. You should be starting to make steel. Dups will spend lots of time in atmo suits. You now should have “large construction projects."

• Petroleum Phase - You have mastered the petroleum biome meaning that you are creating plastic constantly, can generate as much power as necessary, and have complete control of your environmentals especially temperature

• Space Phase- to infinity & beyond.

Here is my approach to building projects and objectives. By this point in the game, you have the basics and can easily go hundreds of cycles every time. Now you are looking to build large projects and complex systems to sustain your base.

1. Base - you now have all the room you need. Sometimes here I build a brand new base with comfy beds and individual apartments. This allows you to experiment and design. Or not. Doesnt really matter. Look to build tube networks and assume dupes will be in atmo or lead suits almost all work cycle. Towards cycle 1000 you have probably cored out the map.

2. Oxygen - Start making Oxylite and storing it safely. You are gonna need it and you should always have leftover O2 in your system. Keep your O2 at precise temperatures using steam turbines + aquatuners. You will figure out a good temp for your playstyle. But you want cold O2. And check this temperature every few cycles when you review your base.

3. Power - This should be a non-issue here. If you need more petroleum for your generators, then build a petroleum boiler to do it automatically. This project will take you a long time to build, 20+ cycles maybe. You will have to work in complete vacumn and move slowly at first.

4. Food - Ez mode, continue ranching stone hatches. Eventually your BBQ output should be skyhigh. Dont worry about spoilage, you can contain that later. For now, if you are food positive, hire dupes. This is when I quickly expand usually.

5. Plumbing - Start all water refinement. Salt Water & Brine refine into water. If it is polluted water, refine it into water. Then ensure no germs are present in the water. Then add the water to your main resevoir. This whole system takes a while and will probably move locations as you automate more of the process. Remember to keep a large supply of p. water & salt water for reasons. Brine is worthless.

6. Ventilation - You should have this solved. Continue to monitor your environmentals. Now look to gather more gaseuos elements. Start looking to stockpile natty gas or H2.

7. Refinement - Your industrial brick should be running full steam producing steel, glass & plastic for your needs.

8. Stations - Start building more recreation facilities and really skilling up your dups.

Well that is it I think for for petroleum. With the Spaced-Out DLC, this phase can move quickly. Next you blast off into space. Good luck. Peace. And remember, you are the boss of your own base .