Guide
How to play xAI Defense
A quick rules and strategy guide for the free online SpaceXAI tower defense game at groktowerdefense.com.
Objective
Stop rival AI lab models from reaching your base. You start with lives and gold. Each enemy that completes the path costs a life. Survive all 12 waves to win.
Controls
- Choose a tower in the arsenal panel (Grok, Falcon, Starlink, Starship).
- Click or tap a free grid cell beside the path—not on the track.
- Press Start wave (or enable Auto) to spawn creeps.
- Select a placed tower to upgrade damage, fire rate, or sell.
- Use 2× to speed combat; open Settings for audio and accessibility.
- Tap ⓘ on a tower card to open its full dossier and lore.
Strategy tips
- Open with Grok near early path corners for reliable DPS.
- Add Falcon covering long straight segments for sniper damage.
- Place Starship where creeps clump after turns for splash value.
- Use Starlink to finish light sprinters and maintain pressure.
- Upgrade high-value towers before spreading gold too thin.
- Never block yourself out of key build cells next to chokes.
Frequently asked questions
What is xAI Defense?
xAI Defense is a free browser tower defense game at groktowerdefense.com where you place SpaceXAI-themed towers (Grok, Falcon, Starlink, Starship) to stop rival AI lab creeps from reaching your base across 12 escalating waves.
How do you play xAI Defense?
Select a tower from the arsenal, place it on a free grid cell beside the path (not on the track), then start waves. Earn gold from kills and wave bonuses to buy more towers or upgrade damage and fire rate. Keep lives above zero until all waves clear.
Which towers are available?
Four towers: Grok Sentinel (balanced hitscan laser), Falcon Battery (long-range rockets), Starlink Array (rapid pulses), and Starship Mortar (splash damage).
Who are the enemies in xAI Defense?
Enemies are rival AI lab logos: OpenAI, Anthropic, Gemini, Meta AI, Microsoft Copilot, and DeepMind, with different HP, speed, armor, and gold rewards.
Is xAI Defense free to play on mobile?
Yes. xAI Defense at groktowerdefense.com runs free in the browser on phones and desktops with touch placement, 2× speed, auto-wave, local settings, and a local leaderboard.
Does xAI Defense support accessibility options?
Yes. Settings include reduce motion, screen shake toggle, particle FX toggle, damage numbers, build grid, sound volume, and gameplay defaults for speed and auto-wave.
Start playing xAI Defense or read more on the about page.