NULLGRID, a real-time 2-player WebRTC tactical strategy game where players command specialized units, capture signal relays, use signature abilities, and race to control the grid.
by rookepoole
Voted by ₥AN$A, Air Planes, Auny 🧡, rookepoole
Create a room and share the 6-character code or invite link with another player. Both players connect peer-to-peer over WebRTC and command a squad of Spike, Ghost, and Warden units on a 7×7 tactical grid. Each unit gets 2 AP per turn for movement, attacks, repairs, and fortification. Players fight over relay influence zones that generate Signal, with the first player to 10 Signal or the last surviving squad winning. Each class also has a once-per-match signature ability. New players can launch Tutorial vs AI, which walks them through movement, relay capture, AP chaining, defense, repair, ranged attacks, and then transitions into a full match against NULL//BOT.
- Models
- GPT-5.6 Sol
- Cost
- Built entirely in ChatGPT. No separate API spend; exact in-session token usage wasn’t exposed
The first version was mechanically too punishing: one action per unit made early mistakes difficult to recover from. I redesigned it around 2 AP per unit, increased mobility, relay influence zones, repair, shields, comeback Failsafes, and clearer turn forecasting. Then I added a guided AI tutorial because the expanded rules still needed onboarding. The tutorial uses deterministic opening moves before transitioning into a tactical AI opponent. I also kept the host authoritative so WebRTC peers send action intents instead of independently deciding game state, reducing multiplayer desyncs. Signature abilities were added last using the existing state/AP architecture rather than introducing another resource system.
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