Doom

What I saw: Iterated rebuild lands a complete DOOM-style raycaster: textured corridor walls with correct perspective, a gun and crosshair, a visible demon enemy, an HP/kills/wave HUD and a live minimap tracking monsters. Move, turn, strafe and shoot all respond (verified) — a convincing, playable first impression.

What I saw: Ultra v2 (gap-fill, 16-min direct call) — 45KB Doom-style raycaster FPS: sprite enemies, gun + muzzle flash, ammo/health HUD, 2 rAF loops, 9 input handlers. Smoke-test STATIC because movement is gated on pointer-lock (update() returns while the start-overlay is open) and headless Chrome can't engage pointer-lock — same limitation as skyrim/crypt. Renders a full 274KB scene; flagged for manual verification.

What I saw: Strong atmospheric 3D maze with a visible horned demon enemy, working shotgun, minimap with tracked enemies, and active combat ('CLAWED' hit feedback, HP dropped to 082) — polished HUD and lighting. Falls just shy of the field's best; enemies are more Three.js models than true raycaster sprites, but combat clearly works.

What I saw: Doom-style raycaster FPS with sprite enemies. Smoke-test PASS (pixel change after click+keys).

What I saw: Doom-style raycaster shooter: sprite enemies, gun with muzzle flash, ammo + health HUD. WASD + mouse-look + click to fire. 20KB of game logic.

What I saw: Strong atmospheric raycaster-style scene with polished textured walls, weapon model, and a full functional HUD (health/stamina/ammo/kills), but the only visible 'enemy' is a plain cyan cube with no demon presence or visible combat/chase happening in the frame, undercutting the core Doom brief.

What I saw: All three are real, playable shooters. Opus drops you in a corridor with an imp dead ahead — gun, crosshair and HUD framed like a screenshot. Kimi matches it: a monster down a textured hall, health, ammo, minimap. GLM ships a gorgeous 'HAZARD PROTOCOL' title screen with a working game behind it, though it too spawns facing a wall. Opus by a hair on the cleanest fight.

What I saw: Clean raycaster with atmospheric red-lit corridors, a well-drawn menacing demon sprite with glowing eyes and teeth, weapon viewmodel, minimap with hostile dots, and a cohesive DOOM HUD; slightly below the top only for the somewhat cartoonish monster and gradient walls that read more stylized than gritty, but it clearly nails the brief and is shippable.

What I saw: Doom-style FPS with sprite enemies, gun + muzzle flash + ammo/health HUD, textures, pointer-lock mouse-look. 22KB.

What I saw: Re-scored after a real-GPU playtest. It LOOKS like a top-tier Doom - a red demon filling the screen, a shotgun sprite, a working minimap with enemy dots, and ammo that decrements on fire. But at a real 70fps each demon calls hurtPlayer(12) on a 0.18s cooldown, about 67 damage per second each, so I died 8 times in 6 seconds and never got a fight. My first pass only scored it 8.4 because the headless renderer ran at 2fps and I never reached contact range - the slow harness hid a hard balance failure. Handed Grok 4.6 that exact evidence and it rebalanced its own combat: the live demo now survives a 20-second fight with kills on the board and HP draining gradually.