Rocket Knockout Is Now Live on Playaby: 3D Arena Combat With a Shrinking Ring

Rocket Knockout just landed on Playaby, and it's the most physical game we've shipped yet — two rockets, one small asteroid arena, and a fight that is won as much by positioning and nerve as by landing shots. Instead of a flat top-down shooter, we built a full 3D arena where speed, ramming, and the boundary itself are all part of the combat, not just the visuals.

What actually shipped

• A physics-driven flight model with drag, lateral grip, and a boost meter that drains and regenerates rather than a simple on/off speed toggle.
• Four weapon and buff pickups — homing missiles, triple-shot, plasma cannon, plus shield, rapid-fire, and speed buffs — that spawn on the field and expire after a limited number of charges or seconds.
• A shrinking arena: the boundary holds steady for the first minute, then closes in over the next thirty-five seconds, forcing a fight instead of a stalemate.
• Ring-out eliminations, ramming damage and knockback, three CPU difficulty tiers, local 2-player on one keyboard, and full dual-joystick touch controls.

Why the arena shrinks instead of staying fixed

An arena that never changes lets a cautious player just circle the edge indefinitely and wait the other pilot out, which is a boring way for a match to end. Once the clock passes the one-minute mark, the boundary starts closing in over the next thirty-five seconds, shrinking the safe flying space until camping the edge stops being an option. It doesn't force a specific strategy, but it does force a decision.

Why ramming needed to be a real mechanic, not a side effect

Two rockets occupying the same 3D space was always going to happen accidentally, so we leaned into it instead of treating it as a bug. Collide with the other rocket above a minimum speed and both of you take damage scaled to the closing speed, plus a real knockback that can shove someone toward — or past — the boundary. It turns a chase into a genuine risk for whoever is behind, not just whoever is ahead.

Why pickups expire instead of staying forever

Giving someone a permanent plasma cannon the moment they grab one pickup would make the rest of the match a formality. Missiles, triple-shot and plasma are all limited to one or two charges before dropping back to the unlimited stock blaster, and the shield, rapid-fire and speed buffs run on a timer instead of forever. That keeps a pickup worth fighting over without letting a single lucky grab decide the whole match.

Building three CPU opponents that actually feel different

Rather than one CPU brain with a difficulty slider bolted on, Rookie, Pilot and Ace CPU each get their own aim tolerance, reaction delay, dodge chance, and boost habits. Rookie genuinely whiffs shots and reacts late. Ace predicts where you're heading, dodges incoming fire, and pushes for ring-outs once the arena starts closing — the gap between tiers is behavioral, not just a bigger damage number.

What we're watching next

Flight feel was the thing we iterated on longest before launch — how much drag, how much lateral grip, how twitchy the turn rate should be — and that tuning came from actually flying the thing over and over, not from a spreadsheet. Now that it's live, we're watching which weapons and buffs people actually fight over, and whether the shrinking arena timing needs to move earlier or later.

Do I need to download anything or make an account to play?

No. Rocket Knockout runs straight in the browser tab like everything else on Playaby, on desktop or mobile, with no install and no login. Touch devices get dual on-screen joysticks plus fire, boost, and special buttons automatically.

Can I play against a friend instead of the CPU?

Yes — Local Duel puts two pilots on the same keyboard, WASD and Space/F against arrow keys and Right Shift/Enter, both looking at the same screen. It sits right next to the three CPU tiers on the mode-select screen.

Pick a CPU tier or grab a second controller-free pilot for Local Duel, and see whether you can out-fly the boundary before it closes in on you.