Portal is Valve's genre-defining puzzle game where you solve test chambers using a gun that creates linked portals on surfaces. What starts as a clever physics puzzle game evolves into one of gaming's most memorable narrative experiences as the AI GLaDOS's cheerful testing instructions become increasingly sinister. The portal mechanic — 'speedy thing goes in, speedy thing comes out' — exploits momentum conservation for increasingly complex spatial puzzles. Completable in 2-4 hours, Portal is a perfect example of game design economy: every mechanic is introduced, explored, and subverted in a tight package. The game remains essential playing for anyone interested in game design, puzzle design, or just excellent video games.
Your choice of equipment defines your damage output and playstyle. This guide ranks every major option, explains what makes each one strong, and tells you which builds they pair best with.
Equipment Rankings
| Equipment | Tier | Best For | Notes |
|---|---|---|---|
| Portal Gun | S | Everyone (it's the only tool) | The only weapon/tool in the game. |
| Companion Cube | A | Chamber 17 puzzle | A weighted storage cube with hearts that appears in Chamber 17. |
| Weighted Storage Cube | A | Button puzzles, turret blocking | Standard physics cubes used to press buttons, block lasers, and serve as portal projectiles. |
| Turret | B | Environmental hazard/puzzle element | Aperture Science turrets fire bullets when they detect the player. |
| Energy Ball | B | Energy ball puzzle chambers | Bouncing energy spheres that must be redirected through portals into receptacles to power doors and platforms. |
S-Tier: Portal Gun
The only weapon/tool in the game. Left click fires the blue portal, right click fires the orange portal. Portals only stick to flat, white-ish surfaces (portalable surfaces). The portal gun never runs out of charge and is your sole means of interacting with the world beyond physics objects.
| Attribute | Detail |
|---|---|
| Tier | S |
| Best For | Everyone (it's the only tool) |
| Key Mechanic | portal gun mechanics |
| Recommended Build | Speedrunner |
How to get it: Available from mid-game onward. See our walkthrough for the exact progression point.
Best builds using Portal Gun: Pairs naturally with Speedrunner thanks to stat scaling synergies.
A-Tier: Companion Cube
A weighted storage cube with hearts that appears in Chamber 17. Functions identically to regular weighted cubes — presses buttons and blocks turret sightlines. Its emotional significance comes from GLaDOS's narration rather than any gameplay difference.
| Attribute | Detail |
|---|---|
| Tier | A |
| Best For | Chamber 17 puzzle |
| Key Mechanic | momentum conservation |
| Recommended Build | Puzzle Solver |
How to get it: Accessible in the early-to-mid game. Check our maps guide for the location.
Best builds using Companion Cube: Pairs naturally with Puzzle Solver thanks to stat scaling synergies.
A-Tier: Weighted Storage Cube
Standard physics cubes used to press buttons, block lasers, and serve as portal projectiles. Multiple cubes appear in later chambers requiring you to manage several simultaneously. They can be launched through portals.
| Attribute | Detail |
|---|---|
| Tier | A |
| Best For | Button puzzles, turret blocking |
| Key Mechanic | companion cube |
| Recommended Build | Explorer |
How to get it: Accessible in the early-to-mid game. Check our maps guide for the location.
Best builds using Weighted Storage Cube: Pairs naturally with Explorer thanks to stat scaling synergies.
B-Tier: Turret
Aperture Science turrets fire bullets when they detect the player. They can be knocked over (which disables them), blocked with cubes, or redirected through portals. In one chamber, you can launch turrets at each other through portals. They can also be picked up and placed.
| Attribute | Detail |
|---|---|
| Tier | B |
| Best For | Environmental hazard/puzzle element |
| Key Mechanic | turret avoidance |
| Recommended Build | Challenge Mode |
How to get it: Found in later areas. Our walkthrough covers when you can access this.
Best builds using Turret: Pairs naturally with Challenge Mode thanks to stat scaling synergies.
B-Tier: Energy Ball
Bouncing energy spheres that must be redirected through portals into receptacles to power doors and platforms. They follow straight-line paths and bounce off walls at predictable angles. Timing portal placement to catch a moving energy ball is a key skill.
| Attribute | Detail |
|---|---|
| Tier | B |
| Best For | Energy ball puzzle chambers |
| Key Mechanic | physics puzzles |
| Recommended Build | Commentary Mode |
How to get it: Found in later areas. Our walkthrough covers when you can access this.
Best builds using Energy Ball: Pairs naturally with Commentary Mode thanks to stat scaling synergies.
Equipment Progression Path
The order you should acquire equipment as you progress:
- Starting gear → Enough to clear Test Chamber 01-10
- Companion Cube → Your first real upgrade, available early
- Weighted Storage Cube → Mid-game upgrade with good scaling
- Portal Gun → Best-in-slot, aim for this by late game
- Upgrade to max → The power spike from max upgrades is enormous
Equipment Tips
- Always upgrade your primary equipment before diversifying — one strong option beats three mediocre ones.
- Match your equipment to your build's stat priorities for maximum scaling.
- Portals conserve momentum. If you fall from 20 meters into a floor portal, you exit the wall portal with the same speed. This 'fling' technique is essential for crossing gaps in later chambers.
- Check our tier list for how equipment rankings affect overall build effectiveness.
More Portal Guides
- Portal Portal Overview
- Portal Best Builds
- Portal Tier List
- Portal Walkthrough
- Portal Beginner's Guide
- Portal Tips & Tricks
- Portal Combat Guide
- Portal Boss Guide
- Portal Maps & Locations
- Portal Crafting Guide
- Portal Classes & Characters
Similar Games
If you enjoy Portal, check out these related guides:
- Escape Simulator Weapons Guide — puzzle game with similar mechanics
- Pico Park Weapons Guide — puzzle game with similar mechanics
