While working on Mirror Siege, I started thinking about something that goes far beyond graphics:
How much can the same strategy game change when you move from 2D → 2.5D → full 3D?
Mirror Siege currently exists as a relatively simple playable prototype.
The core idea is straightforward:
Build an army → deploy squads → counter the enemy → break through defensive Towers → destroy the Castle.
But what happens if the core mechanics stay similar while the perspective, terrain, and presentation change?
1. 2D — Maximum battlefield readability
A top-down 2D version makes it very easy to understand the entire battlefield.
You can quickly see:
- army composition
- unit positions
- Towers
- paths
- threats
- available space
This makes 2D extremely useful for large-scale strategy.
But elevation is mostly represented visually rather than physically.
[IMAGE — 2D TOP-DOWN]
2. 2.5D / Isometric — Terrain starts becoming part of the strategy
With an isometric or 2.5D battlefield, the same game can suddenly gain much more visual depth.
Now we can clearly show:
- high ground
- cliffs
- ramps
- bridges
- valleys
- multiple elevation levels
Imagine ranged units defending a cliff while infantry holds a narrow bridge.
Or Cavalry being extremely powerful on open ground but struggling through narrow mountain paths.
The army composition may remain the same, but the battlefield can force completely different decisions.
[IMAGE — 2.5D / ISOMETRIC]
3. Full 3D — Scale and elevation become much more physical
A full 3D version could change the feeling again.
The camera could move, rotate and zoom across a real 3D battlefield.
Armies could:
- climb hills
- descend into valleys
- cross bridges
- move around mountains
- attack fortified high ground
- choose completely different approaches to the same objective
A Tower on a hill would not just look higher.
It could actually dominate a larger part of the battlefield.
[IMAGE — 3D BATTLEFIELD]
Terrain may change the game even more than graphics
This is the part that interests me the most.
Imagine playing Mirror Siege on four different maps:
Open Field Fast movement, large formations, strong Cavalry.
Mountain Pass Narrow routes, high ground, chokepoints, difficult flanking.
River & Bridges Crossings become strategic objectives and armies must choose where to commit.
Fortress Assault Walls, gates, multiple defensive layers and siege routes completely change how an army attacks.
Same units.
Same basic combat system.
But potentially a very different battle.
[IMAGE — MOUNTAIN / BRIDGE / FORTRESS]
That made me realize something:
2D, 2.5D and 3D are not only visual choices.
For a strategy game, perspective and terrain can influence how information is presented, how armies move, how players position units and ultimately how the entire battle feels.
Mirror Siege is still only a prototype, so these images are concept explorations, not promises of future features.
But I find this direction extremely interesting.
If more time, resources and development were invested into the project, I would love to explore how far terrain and perspective could push the original idea.
What would you prefer?
A — Clear 2D top-down strategy B — 2.5D / Isometric with stronger terrain gameplay C — Full 3D with large battlefields and real elevation
Or would you combine parts of all three?
I would love to hear what other developers and players think.
Playable prototype:
https://jxnhalam.itch.io/mirror-siege
I will keep updating this thread as I experiment with the design.





















