Space Engineers is Keen Software House's block and voxel sandbox, on Steam Early Access from 23 October 2013 and fully released on 28 February 2019. You build ships, stations and rovers from large grid blocks 2.5 metres per edge or small grid blocks at 0.5 metres, and anything you build can be ground down, shot apart or flown into a mountain. The vanilla Star System holds eight bodies, and their ore rules set the whole progression: platinum appears only on moons and asteroids, uranium only on asteroids.
Combat in Space Engineers rewards knowledge over reflexes. Understanding how each mechanic works (and how they interact) is what turns a struggling player into a dominant one. New here? Start with our beginner's guide for the basics.
Core Combat Mechanics
1. Large and small grid building
Large grid blocks measure 2.5 metres per edge and small grid blocks 0.5 metres, so a small block holds one one hundred and twenty fifth of the volume. Choosing the wrong grid is why most first rovers cannot be powered or moved.
Why it matters: This is the foundation of all combat. Everything else builds on this.
2. Ore refining and assembly
The Refinery converts ore to ingots at fixed yields, 70 percent for iron, 40 percent nickel, 10 percent silver, 1 percent gold and uranium and 0.5 percent platinum. The Basic Refinery cannot process silver, gold, uranium or platinum at all, and the Survival Kit only handles stone.
Why it matters: The most underrated mechanic. Players who master this early have a massive advantage.
3. Thruster and gravity flight
Atmospheric Thrusters do nothing in vacuum, Ion Thrusters do almost nothing in atmosphere, and Hydrogen Thrusters work everywhere at the worst fuel cost. Any ship that leaves a planet needs at least two of the three, staged by altitude.
Why it matters: Unlocks a new layer of gameplay depth once understood.
4. Oxygen, hydrogen and life support
The O2 H2 Generator melts ice into gas, producing 250 litres of oxygen or 500 litres of hydrogen per five second cycle on large grid. Your suit holds 125 litres of hydrogen, a Hydrogen Bottle holds 400, and bottles in inventory refill the jetpack automatically.
Why it matters: The tactical edge that separates average players from advanced ones.
5. Block damage and repair
Every block carries its own integrity value. The Grinder strips blocks back into components and the Welder rebuilds them, and pairing a Welder with a Projector holding the original blueprint is the entire ship repair loop.
Why it matters: The endgame optimization mechanic. Small improvements here compound into massive gains.
How These Mechanics Combine
Understanding how mechanics interact is where real optimization happens:
Large and small grid building + Ore refining and assembly
Large grid blocks measure 2. When combined with Ore refining and assembly, the refinery converts ore to ingots at fixed yields, 70 percent for iron, 40 percent nickel, 10 percent silver, 1 percent gold and uranium and 0. This combination is the core of every effective build.
Thruster and gravity flight + Oxygen, hydrogen and life support
Atmospheric Thrusters do nothing in vacuum, Ion Thrusters do almost nothing in atmosphere, and Hydrogen Thrusters work everywhere at the worst fuel cost. Paired with Oxygen, hydrogen and life support, the o2 h2 generator melts ice into gas, producing 250 litres of oxygen or 500 litres of hydrogen per five second cycle on large grid. This is why the tier list favors builds that leverage both.
Block damage and repair as a Multiplier
Every block carries its own integrity value. The Grinder strips blocks back into components and the Welder rebuilds them, and pairing a Welder with a Projector holding the original blueprint is the entire ship repair loop. This system amplifies everything else. The better your Block damage and repair optimization, the more your other mechanics pay off.
Combat by Build
Each build approaches combat differently:
Atmospheric mining ship (A-Tier)
Combat approach: Balanced combat style. Key equipment: Hand Drill Primary mechanic: Large and small grid building
Atmospheric mining ship offers a solid combat experience. Full setup in our builds guide.
Hydrogen launch vehicle (A-Tier)
Combat approach: Balanced combat style. Key equipment: Grinder Primary mechanic: Ore refining and assembly
Hydrogen launch vehicle offers a solid combat experience. Full setup in our builds guide.
Refining station (A-Tier)
Combat approach: Balanced combat style. Key equipment: Survival Kit Primary mechanic: Thruster and gravity flight
Refining station offers a solid combat experience. Full setup in our builds guide.
Survival rover (A-Tier)
Combat approach: Balanced combat style. Key equipment: Refinery Primary mechanic: Oxygen, hydrogen and life support
Survival rover offers a solid combat experience. Full setup in our builds guide.
Combat gunship (A-Tier)
Combat approach: Balanced combat style. Key equipment: Artillery Turret Primary mechanic: Block damage and repair
Combat gunship offers a solid combat experience. Full setup in our builds guide.
Advanced Combat Techniques
Damage Optimization
- Match your equipment to your build's stat priorities
- Exploit Large and small grid building for maximum damage windows
- Chain Ore refining and assembly and Thruster and gravity flight for combo damage
- Use Oxygen, hydrogen and life support to create openings
Survivability
- Learn enemy patterns before committing to attacks
- Uranium has not spawned on planets or moons since version 1.189. Nuclear reactors, railgun sabots, artillery shells and rockets all depend on it, so a planet locked base is permanently on solar, wind and hydrogen.
- Position using Large and small grid building to control spacing
- Save defensive options for guaranteed survival, not comfort
Boss Combat
Bosses test your understanding of every mechanic. See our boss guide for fight-specific strategies.
- Phase awareness: Most bosses change behavior at health thresholds
- Patience over aggression: One extra hit per opening beats dying to greed
- Build preparation: Swap gear and equipment for specific fights when needed
Common Combat Mistakes
- Button mashing: Committed attacks have recovery frames. Mashing locks you into animations.
- Ignoring Ore refining and assembly: This mechanic exists for a reason. Players who use it take significantly less damage.
- Wrong equipment for the situation: Check our weapons guide for situational picks.
- Not learning from deaths: Every death teaches something. If you don't know why you died, you'll die the same way again.
- Overcommitting: Trading hits works in EarthLike but will get you killed in Triton.
More Space Engineers Guides
- Space Engineers Space Engineers Overview
- Space Engineers Best Builds
- Space Engineers Tier List
- Space Engineers Walkthrough
- Space Engineers Beginner's Guide
- Space Engineers Tips & Tricks
- Space Engineers Weapons Guide
- Space Engineers Boss Guide
- Space Engineers Maps & Locations
- Space Engineers Crafting Guide
- Space Engineers Classes & Characters
Similar Games
If you enjoy Space Engineers, check out these related guides:
- Terraria Combat Guide: sandbox game with similar mechanics
- VRChat Combat Guide: sandbox game with similar mechanics
- Garry's Mod Combat Guide: sandbox game with similar mechanics
