VOIDCLAIM: a free space strategy game in your browser
VOIDCLAIM is a fast real-time strategy game for the browser: capture planets, let them produce ships automatically, and send fleets to neutral or opposing worlds. No installation, registration, or payment is required. Single-player delivers progressively harder sectors against an AI opponent, while real-time 1v1 multiplayer lets exactly two people compete through a private four-character room code.
How does the game work?
Every controlled planet continuously produces new ships. Select one of your worlds and then a target to send 50 percent of the stationed fleet. Hold Shift while selecting several planets to prepare a coordinated attack. Neutral planets expand your production base, while capturing an opposing world weakens the enemy economy. A match ends when one side has neither a controlled planet nor an active fleet remaining.
Endless mode begins Sector 1 with eight planets. Later sectors gradually increase the planet count, enemy attack frequency, and fleet strength. Pirate ships and Nova Bombs add dynamic events. The 1v1 mode deliberately focuses on the strategic core without random pirates or power-ups, allowing both players to compete under comparable conditions.
Which decisions determine a match?
Success depends on more than owning the largest fleet. Distance, production rate, and attack timing determine whether an expansion remains profitable. A nearby neutral planet may provide early production, but capturing it ties up ships that cannot defend the home world. Several small attacks can test enemy reserves; a coordinated strike from multiple worlds creates greater pressure but reveals the direction of the offensive. Both players see the same planet values and react in real time. That produces transparent strategic decisions rather than hidden dice rolls. Players who observe fleet routes, preserve reserves, and prioritize weak targets can build a lasting advantage.
Technology behind multiplayer
Online play uses a host-authoritative architecture: the host calculates production, fleet movement, and battles, while the guest sends only validated commands. Every 100 milliseconds, the host transmits a compact state snapshot. The real-time connection uses the standardized WebSocket Protocol RFC 6455. The game board is rendered with the Canvas element defined by the HTML Living Standard. The starfield and spatial background effects use Three.js. These links document the underlying open web technologies; they are not sponsors or advertising partners.
Data handling, highscores, and availability
No user account is needed to start a game. A freely chosen call sign may appear in the public highscore list, so it should not contain personal information. Multiplayer rooms exist only in the relay server's memory and are deleted when the host disconnects. VOIDCLAIM is designed for current desktop browsers. Mouse and keyboard provide the complete control set, while basic touch input is also supported.
Frequently asked questions
What is VOIDCLAIM?
VOIDCLAIM is a free real-time strategy game in the browser. Players capture planets, produce fleets, and attack neutral or opposing worlds.
How does 1v1 multiplayer work?
One player creates a room with a four-character code and the second player joins it. The host simulates the authoritative match and synchronizes fleet commands and game state over WebSockets.
Does VOIDCLAIM need to be installed?
No. The game runs directly in a modern desktop browser. Multiplayer requires an active internet connection for both players.
Is VOIDCLAIM free?
Yes. VOIDCLAIM can be played without registration, a purchase, or a subscription.
More information about the project, operations, and contact route is available on the visible About VOIDCLAIM page. Technical updates are also published in the RSS feed.