ArmorSim 2D mode, originally introduced as Plane mode, is a fast sandbox environment designed for rapid terminal ballistics experiments, custom projectile crafting, and structural impact tests without the massive hardware demands of the 3D solvers. Following major updates by developer Timerlan Galimov, the mode has evolved from an experimental alpha proving ground into the game's primary creative workbench, divided into dedicated sub-modes for both lightweight testing and detailed physical analysis.
2D Playground vs. 2D Advanced
With the release of update 4.0.0, the game reorganizes its flat proving ground into two distinct 2D options placed at the top of the mode selection menu: 2D Playground and 2D Advanced. Both allow direct sandbox experimentation, but they allocate computing resources differently depending on your system specifications and scene complexity.
| Feature | 2D Playground | 2D Advanced |
|---|---|---|
| Primary Purpose | Large-scale scenes, weaker PCs | High-detail physical analysis |
| Hardware Demand | Low GPU/CPU overhead | Moderate to high GPU usage |
| Scene Capacity | Optimized for heavy entity counts | Focused on detailed interactions |
| Target Use Case | Massive structures, multi-unit tests | Component-level penetration mechanics |
2D Playground simplifies physical calculations so that players running mid-range or budget setups can build larger scenes—such as multi-room structures or extensive vehicle arrays—without experiencing heavy frame drops.
2D Advanced delivers the full terminal-ballistics solver suite on a flat plane. It provides fine-grained modeling of penetrator erosion, material failure, and spalling, making it the preferred option among community testers who want precise penetration data without the multi-minute render times of 3D Ultra mode.
Core Features and Creative Tools in 2D Mode
The 2D mode serves as ArmorSim's primary engineering workshop, featuring modular construction mechanics that are not restricted to standard tank armor plates.
Custom Projectile and Shaped-Charge Building
Update 3.3.3 and update 4.0.0 introduced modular projectile crafting directly into the 2D workbench:
- Shaped Charge Assembly: Players can construct custom high-explosive anti-tank rounds using three core parts: an explosive block, a shaped liner (such as 42-degree, 60-degree, or hemispherical copper liners), and a fuze (contact or microsecond timer fuzes). When detonated, the physics solver dynamically computes the formation of the cumulative jet.
- Small Arms Ammunition: The workshop includes scaled pistol cartridges (such as 9x19mm, 7.62x25mm, and .44 Magnum) and military rifle rounds (5.45x39mm, 7.62x39mm, 5.56x45mm, and 7.62x51mm), complete with jacket, lead sleeve, and core layering.
- Standalone Demolitions: Crafting components unattached to a projectile body function as stationary breach charges or mines against concrete and steel barriers.
Drones, Active Protection, and Countermeasures
Update 4.0.0 integrated aerial threats and active defense arrays into the 2D proving ground:
- Drones: Includes 12 drone variants, ranging from FPV kamikaze units carrying shaped charges or fragmentation warheads to loitering munitions and hovering drop drones.
- Stand-Off Defenses: Slat cages and anti-drone nets deform fuzes or detonate warheads away from base armor.
- Active Protection Systems (APS): Four interceptor types can be angled on the canvas—launched plates, fragment cones, explosively formed projectiles, and buckshot.
- Electronic Warfare (EW): EW fields project zones that degrade the flight path of incoming radio-controlled drones.
Electrical Systems and Sensor Logic
Players can wire mechanical and electrical circuits inside 2D targets using direct input-output connections:
- 50 Electrical Components: Includes power sources, switches, logic gates, timers, and relays.
- Sensor Triggers: Laser tripwires, proximity sensors, radar, thermal, acoustic, and impact sensors can trip defensive countermeasures or igniters.
- Fragile Wiring: Metal fragments and shockwaves cut wire runs, disabling automated systems when hit.
Custom Target Image Imports
The 2D mode allows players to import custom reference images in standard PNG or JPG formats directly onto the canvas. This feature lets you trace historical armor profiles, vehicle schematics, or internal module layouts directly into the simulator to test specific structural configurations.
Interface and Control Basics
New players frequently report issues with unresponsive interface menus in 2D mode. The editor requires a specific selection workflow to modify placed parts:
- Place the structural plate or projectile component onto the canvas using the left-hand menu.
- Left-click the specific part directly on the 2D canvas to select it. The editor will not apply changes if an object is not actively targeted.
- Adjust thickness, material type, or angles on the right-hand panel once the component is highlighted.
- Use the middle mouse button to pan and re-center the canvas view.
If the right-hand properties menu freezes or stops responding to clicks, community members note that saving the scene, returning to the main menu, and reloading the save file restores interface input.
Common Issues and Crash Troubleshooting
While 2D mode is significantly more stable than the continuum-based 3D Ultra mode, player reports on the Steam community forums highlight specific stability concerns during early access:
Crashing on Fire with Explosives and Tracers
A common issue in both 2D Playground and 2D Advanced causes the simulation to crash the instant the "Fire" button is pressed. Steam forum testing indicates this crash is primarily triggered by active explosive components, warhead detonations, or small-arms tracer rounds, whereas kinetic penetrators (such as heavy APFSDS rods) resolve without issue.
To avoid lost work, always save your test layout before triggering the firing sequence, especially when testing custom shaped charges or tandem warheads.
Cumulative Jet Assembly Errors
When assembling custom HEAT charges, the simulation may display an error stating that the jet model is missing. This occurs when the required physical chain—fuze, high-explosive body, and copper liner—is misaligned or disconnected. Ensure that each component directly touches the adjacent part on the grid so the solver recognizes the stack as a unified explosive assembly.
Frequently Asked Questions
Is 2D mode included in the base game or sold as DLC?
2D mode (originally listed as Plane mode) is included in the base game. Although it was originally planned as separate content, developer update 2.1 made the mode permanently free and accessible to all owners of the game.
How do you rotate the camera or pan across the 2D canvas?
Press and hold the middle mouse button to move and reposition the view across the 2D testing area.
Can 2D mode simulate infantry and armor plate penetration?
Yes. Update 3.3.3 added mannequin models with distinct anatomical densities (bone, soft tissue, and brain modeling) along with wearable gear, plate carriers, and helmets to test personal protection against small-arms fire and fragmentation.
Why won't the right-hand panel let me change material properties?
You must click on an individual plate or object on the canvas first. The right-hand panel remains inactive until an object is selected. If the panel remains unresponsive after selecting an object, save your layout and reload the scene from the menu.
