OVERVOLT: 2.5D Sci-Fi FPS

ABOUT THE GAME OVERVOLT is a fast-paced 2.5D retro first-person shooter built in JavaScript and HTML5 Canvas. It combines classic raycasting gameplay inspired by Wolfenstein 3D and DOOM with modern Call of Duty-style procedural first-person weapon animations.

Quick Note for Players

If the game loads without textures or some assets appear missing, please wait a few moments for them to finish loading, or try refreshing the page. Once everything displays properly, you’re good to go!

Keep in mind that there are a few minor bugs — for instance, monsters might occasionally get stuck in walls. Also, make sure to check the minimap/map to find your way to the next level.

Thanks for playing, and have fun!

Fight through enemy sectors in Campaign Mode or test your skills in Endless Horde Mode. Dual-wield plasma blasters, sprint through danger, reload under fire, blow up explosive barrels, and eliminate 6 unique types of monsters.

KEY FEATURES Classic 2.5D raycasting engine with textured walls, distance fog, sliding doors, and dynamic muzzle flash lighting. Call of Duty-style first-person weapon animations including breathing sway, mouse-look inertia, walk bobbing, tactical sprint, snappy recoil, brass shell ejection, tactical reloads, and hitmarkers. Dual Akimbo blasters with support for independent left and right hand fire, as well as single-hand weapon modes. 6 monster classes with full animations for idle, walk, attack, damage, and death: Cyber Zombie, Enforcer Soldier, Heavy Commando, Drone Flyguy, Cyber Slayer, and the War Golem Tank boss. Tactical items and hazards including health packs, armor vests, ammo crates, explosive barrels, and 15-second Overcharge damage boosts. Built-in Web Audio synthesizer for all sound effects and synthwave combat music with zero external audio files. Full screen support and standard mouse-look pointer controls.

CONTROLS Movement: W, A, S, D Look and Aim: Mouse Primary Fire (Right Gun): Left Mouse Button Secondary Fire (Left Gun or Dual): Right Mouse Button Tactical Sprint: Shift Reload: R Open Doors and Interact: E or Space Toggle Radar: M Toggle Fullscreen: F Pause: Escape or P

AI DISCLOSURE The source code, game engine, procedural systems, and some visual elements were created with the assistance of AI.

CREDITS Monster sprites and animations are from Free Characters with Animations For FPS game by Fredrichi https://fredrichi.itch.io/free-characters-with-animations-for-fps-game