Portal Shooter
Shoot through your own portals. A kill within two seconds of a portal scores THROUGH THE PORTAL.
Shooter × Portals
First load downloads the game (~60–120 MB), then it's cached.
Needs a desktop browser with WebGPU or WebGL2. Keyboard + mouse.
What happens when Shooter × Portals collide
- Bullets pass through portals: shoot around corners.
- A kill within 2 s of a portal scores THROUGH THE PORTAL (+500).
- Drop through a floor portal behind the bots.
The modes
Shooter
Aim down sights, recoil, bots, health regen and killstreaks (UAV, care package, airstrike). Inspired by 2009-era military shooters.
Controls: LMB fire · RMB aim · R reload · Shift sprint · 1-3 weapons · 5 UAV · 6 care package · 7 airstrike
Portals
Two linked portals that keep your momentum. Bullets, cars and boards all pass through. Inspired by 2007-era portal puzzlers.
Controls: 8 portal gun · LMB blue · RMB orange
FAQ
- Can I play Shooter × Portals online for free?
- Yes. This is a GameMash preset that runs in your browser with WebGPU or WebGL2. It's free, there's no account, and you don't need any game files.
- Can I add more modes?
- Yes. Press Tab to open the mode panel, or F1–F8 to switch modes live. You can add Skate, Platformer, Open-World Crime and more without losing your momentum.
- Is it made from the original games?
- No. Every mechanic is a clean-room implementation written from observed behaviour and published values, with original code and CC0 or self-made assets. The modes are inspired by 2009-era military shooters and 2007-era portal puzzlers.
Real AI mashups like this
These were built from the original games and need your own copies. Their stories are below.
- downloadable
2010 Rust Rewrite Mashup (MW2 × Skate 3 × Minecraft)
Modern Warfare 2, Skate 3 and an endless Minecraft world in one Rust game, built from two AI-assisted engine rewrites.
chasmlol · September 27, 2026
- video only
World at War Zombies in the browser (P.E. Cooper)
Call of Duty: World at War's first zombies map, ported to the web by Opus 5.5, then crossed with Wii Sports, Mario Kart, Portal, Fortnite, NHL and Halo.
P.E. Cooper · September 29, 2026
- video only
Tarkov in Skyrim (viral clip)
Escape from Tarkov's guns, inventory and UI inside Skyrim. One of the first viral mashup clips; a follow-up added Spider-Man. No code released.
Cydonyx · September 30, 2026
More mashups to play
Skate × Shooter
Kickflip over bots, aim down sights mid-air and land a KICKFLIP KILL, the original GameMash combo.
Skate × Portals
Shoot two portals and skate through them with your speed intact. Tricks right out of a portal score PORTAL TRICK.
Platformer × Shooter
Triple jump over bots, backflip into an airborne kill and ground-pound into cover.
Platformer × Portals
Long-jump into a portal and come out the other side with all your speed: momentum puzzles with a triple jump.
Shooter × Open-World Crime
Bots, killstreaks and aim-down-sights gunplay in a city with traffic, carjacking and a wanted level.
Shooter × Voxel
Dig cover out of the ground, build walls, and watch explosions carve the voxel world.